3,483 results match your criteria Lower Extremity Reconstruction Knee


The reliability of full-length lower limb radiographic alignment measurements in skeletally immature youth.

J Child Orthop 2019 Feb;13(1):67-72

Department of Orthopedics & Sports Medicine, Seattle Children's Hospital, Seattle, Washington, USA.

Purpose: Reliable radiographic measurement techniques are important for investigating limb alignments prior to and following paediatric anterior cruciate ligament (ACL) reconstruction. We investigated the inter- and intraobserver reliability of alignment measurements from lower extremity anteroposterior and lateral radiographs of adolescents having undergone transphyseal ACL reconstruction.

Methods: A total of 15 of 90 patients who had undergone transphyseal ACL reconstruction were randomly selected for alignment measurements of radiographs of operative and nonoperative limbs. Read More

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http://dx.doi.org/10.1302/1863-2548.13.180087DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6376436PMC
February 2019

A prospective randomized open-label study of single injection versus continuous adductor canal block for postoperative analgesia after total knee arthroplasty.

Bone Joint J 2019 Mar;101-B(3):340-347

Department of Orthopedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA.

Aims: Adductor canal block (ACB) has emerged as an alternative to femoral nerve block (FNB) for analgesia after total knee arthroplasty (TKA). The optimal duration of maintenance of the ACB is still questionable. The purpose of this study was to compare the analgesic benefits and physiotherapy (PT) outcomes of single-shot ACB to two different regimens of infusion of the continuous ACB, 24-hour and 48-hour infusion. Read More

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http://dx.doi.org/10.1302/0301-620X.101B3.BJJ-2018-0852.R2DOI Listing
March 2019
1 Read

V-Y Tendon Plasty for Reconstruction of Chronic Achilles Tendon Rupture: A Medium-term and Long-term Follow-up.

Orthop Surg 2019 Feb 27;11(1):109-116. Epub 2019 Feb 27.

Center for Joint Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China.

Objective: To evaluate the surgical results of V-Y tendon plasty in the treatment of chronic Achilles tendon rupture during medium and long-term follow-up.

Methods: Between June 2005 and September 2017, 20 patients with chronic Achilles tendon rupture underwent V-Y tendon plasty in our hospital. The mean injury-to-surgery time was 20. Read More

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http://dx.doi.org/10.1111/os.12429DOI Listing
February 2019
2 Reads

Biomechanical and Functional Outcomes After Medial Patellofemoral Ligament Reconstruction: A Pilot Study.

Orthop J Sports Med 2019 Feb 15;7(2):2325967119825854. Epub 2019 Feb 15.

University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.

Background: Previous studies have acknowledged the medial patellofemoral ligament (MPFL) as the primary stabilizer of the patella, preventing lateral displacement. MPFL reconstruction (MPFL-R) restores stability and functionality to the patellofemoral joint and has emerged as a preferred treatment option for recurrent lateral patellar instability.

Purpose: To objectively measure biomechanical characteristics of athletes cleared for return to sport after MPFL-R compared with healthy controls. Read More

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http://dx.doi.org/10.1177/2325967119825854DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6378443PMC
February 2019
5 Reads

Live Music Therapy During Rehabilitation After Total Knee Arthroplasty: A Randomized Controlled Trial.

Authors:
Hakeem Leonard

J Music Ther 2019 Feb;56(1):61-89

Shenandoah University, Winchester, VA, USA.

Total knee arthroplasty (TKA) is a common orthopedic surgery known to be very painful. Emphasis has been placed on TKA pain management for postoperative care and during rehabilitation. Music therapy is used as a nonpharmacologic intervention for pain management and to promote rehabilitation exercise adherence. Read More

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http://dx.doi.org/10.1093/jmt/thy022DOI Listing
February 2019
1 Read

Non-anastomotic aneurysmal degeneration of great saphenous vein graft A case report and review of the literature.

Ann Ital Chir 2019 ;90:83-87

Introduction: True aneurysmal degeneration of autogenous vein grafts is unusual, despite their widespread use as arterial substitutes. We report a case of acute lower leg ischemia due to thrombosis of a non-anastomotic venous aneurysm.

Case Report: A 71-year old man presented at Emergency Unit at our Institution with left lower limb acute ischemia. Read More

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January 2019
2 Reads

Transfemoral amputation following total knee arthroplasty: mortality and functional outcomes.

Bone Joint J 2019 02;101-B(2):221-226

Duke University Hospital, Durham, North Carolina, USA.

Aims: The aim of this study was to characterize the factors leading to transfemoral amputation after total knee arthroplasty (TKA), as well as the rates of mortality and functional independence after this procedure in these patients.

Patients And Methods: This was a multicentre retrospective review with a prospective telephone survey for the assessment of function. All patients with a TKA who subsequently required transfemoral amputation between January 2001 and December 2015 were included. Read More

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http://dx.doi.org/10.1302/0301-620X.101B2.BJJ-2018-0784.R1DOI Listing
February 2019
1 Read

Aspirin Alone Is Not Enough to Prevent Deep Venous Thrombosis After Total Joint Arthroplasty.

Orthopedics 2019 Jan 3;42(1):48-55. Epub 2019 Jan 3.

Thromboembolic events after total joint arthroplasty are potentially devastating complications. This study evaluated the efficacy of 4 different anticoagulants in preventing deep venous thrombosis and pulmonary embolism after total joint arthroplasty. The demographics and anticoagulant use (warfarin, enoxaparin, and aspirin with and without outpatient mechanical pumps) for patients who underwent primary unilateral total joint arthroplasties performed by a single surgeon from January 2013 to October 2014 were retrospectively reviewed. Read More

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http://dx.doi.org/10.3928/01477447-20181227-02DOI Listing
January 2019
1 Read

[Limited orthopaedic surgery combined with external fixation for the treatment of lower extremity sequelae of middle and old aged post-poliomyelitis].

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2018 Oct;32(10):1249-1254

Department of Orthopaedics, Rehabilitation Hospital of the National Research Center for Rehabilitation Technical Aids, Beijing, 100176, P.R.China.

Objective: To summarize the effectiveness of limited orthopedic surgery combined with external fixation for the treatment of lower extremity sequelae of middle and old aged post-poliomyelitis, and then to explore the strategy of surgical correction and functional reconstruction method.

Methods: From the database of 23 310 cases of poliomyelitis sequelae treated by QIN Sihe Orthopaedic Surgical team between September 1982 and December 2017, 629 patients over 41 years old were retrieved and the epidemiological characteristics of the patients were analyzed. Between March 2011 and June 2015, 57 patients with poliomyelitis sequelae treated with limited operation and external fixation were followed up 2-6 years, and the history of poliomyelitis sequelae was 41-67 years (mean, 47. Read More

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http://dx.doi.org/10.7507/1002-1892.201806022DOI Listing
October 2018
1 Read

Surgical outcomes of extracorporeal irradiation and re-implantation in extremities for high grade osteosarcoma: A retrospective cohort study and a systematic review of the literature.

J Bone Oncol 2019 Feb 10;14:100210. Epub 2018 Dec 10.

Orthopedic Laboratory and Research Network (OLARN), Department of Orthopedics, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.

Purpose: To assess the failure rate and mode failure of high-grade osteosarcoma patients who received extracorporeal irradiation and re-implantation (ECIR) in extremities.

Patients And Methods: For the cohort study, patients who had received ECIR at a single institution between January 1996 and December 2014 were retrospectively evaluated. Characteristics of failure and time to failure were recorded and analyzed. Read More

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http://dx.doi.org/10.1016/j.jbo.2018.100210DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6299161PMC
February 2019
1 Read

Non-opioid analgesic modes of pain management are associated with reduced postoperative complications and resource utilisation: a retrospective study of obstructive sleep apnoea patients undergoing elective joint arthroplasty.

Br J Anaesth 2019 Jan 27;122(1):131-140. Epub 2018 Oct 27.

Department of Anesthesiology, Critical Care and Pain Management, Hospital for Special Surgery, Weill Cornell Medical College, New York, NY, USA; Department of Anesthesiology, Perioperative Medicine and Intensive Care Medicine, Paracelsus Medical University, Salzburg, Austria. Electronic address:

Background: Studies on the effectiveness of multimodal analgesia, particularly in patients at higher perioperative risk from obstructive sleep apnoea (OSA), are lacking. We aimed to assess the impact of multimodal analgesia on opioid use and complications in this high-risk cohort.

Methods: We conducted a population-based retrospective cohort study of OSA patients undergoing elective lower extremity joint arthroplasty (2006-16, Premier Healthcare database). Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00070912183076
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http://dx.doi.org/10.1016/j.bja.2018.08.027DOI Listing
January 2019
9 Reads

Quadriceps weakness associates with greater T1ρ relaxation time in the medial femoral articular cartilage 6 months following anterior cruciate ligament reconstruction.

Knee Surg Sports Traumatol Arthrosc 2018 Dec 17. Epub 2018 Dec 17.

Department of Orthopaedics, University of North Carolina at Chapel Hill, 102 Mason Farm Rd # 2, Chapel Hill, NC, 27599, USA.

Purpose: Quadriceps weakness following anterior cruciate ligament reconstruction (ACLR) is linked to decreased patient-reported function, altered lower extremity biomechanics and tibiofemoral joint space narrowing. It remains unknown if quadriceps weakness is associated with early deleterious changes to femoral cartilage composition that are suggestive of posttraumatic osteoarthritis development. The purpose of the cross-sectional study was to determine if quadriceps strength was associated with T1ρ relaxation times, a marker of proteoglycan density, of the articular cartilage in the medial and lateral femoral condyles 6 months following ACLR. Read More

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http://dx.doi.org/10.1007/s00167-018-5290-yDOI Listing
December 2018
4 Reads

The Possible Pathophysiological Outcomes and Mechanisms of Tourniquet-Induced Ischemia-Reperfusion Injury during Total Knee Arthroplasty.

Oxid Med Cell Longev 2018 5;2018:8087598. Epub 2018 Nov 5.

Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.

Ischemia and reperfusion (I/R) injury induced by tourniquet (TQ) application leads to the release of both oxygen free radicals and inflammatory cytokines. The skeletal muscle I/R may contribute to local skeletal muscle and remote organ damage affecting outcomes after total knee arthroplasty (TKA). The aim of the study is to summarize the current findings associated with I/R injury following TKA using a thigh TQ, which include cellular alterations and protective therapeutic interventions. Read More

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http://dx.doi.org/10.1155/2018/8087598DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6247434PMC
January 2019
2 Reads

Geniculate Artery Injury During Primary Total Knee Arthroplasty.

Am J Orthop (Belle Mead NJ) 2018 Oct;47(10)

Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA. Email:

Major arterial injury associated with total knee arthroplasty (TKA) is a rare and potentially devastating complication. However, the rate of injury to smaller periarticular vessels and the clinical significance of such an injury have not been well investigated. The purpose of this study is to describe the rate and outcomes of geniculate artery (GA) injury, the time at which injury occurs, and any associations with tourniquet use. Read More

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http://dx.doi.org/10.12788/ajo.2018.0097DOI Listing
October 2018
13 Reads

Blood Flow-Restricted Training for Lower Extremity Muscle Weakness due to Knee Pathology: A Systematic Review.

Sports Health 2019 Jan/Feb;11(1):69-83. Epub 2018 Nov 26.

Cincinnati Sportsmedicine and Orthopaedic Center-Mercy Health and the Noyes Knee Institute, Cincinnati, OH, USA.

Context:: Blood flow-restricted training (BFRT) has been suggested to treat lower extremity muscle weakness. The efficacy of BFRT for muscle problems related to knee pathology is unclear.

Objective:: To determine whether BFRT (1) improves muscle strength and cross-sectional area (CSA) for chronic knee-related lower extremity atrophy and (2) prevents muscle atrophy after knee surgery. Read More

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http://journals.sagepub.com/doi/10.1177/1941738118811337
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http://dx.doi.org/10.1177/1941738118811337DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6299354PMC
February 2019
12 Reads

Abnormal Biomechanics at 6 Months Are Associated With Cartilage Degeneration at 3 Years After Anterior Cruciate Ligament Reconstruction.

Arthroscopy 2019 Feb 22;35(2):511-520. Epub 2018 Nov 22.

Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, California, U.S.A.. Electronic address:

Purpose: To investigate the changes in landing biomechanics over a 3-year period and their correlation with cartilage degenerative changes in the medial tibiofemoral joint of the knee after anterior cruciate ligament reconstruction (ACLR) using magnetic resonance T1ρ mapping.

Methods: Thirty-one anterior cruciate ligament-injured patients underwent magnetic resonance imaging of the injured knee before ACLR and 3 years after ACLR, as well as biomechanical analysis of a drop-landing task at 6 months and 3 years after ACLR. Sixteen healthy individuals were recruited and underwent knee magnetic resonance imaging and biomechanical assessment during a drop-landing task. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S07498063183062
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http://dx.doi.org/10.1016/j.arthro.2018.07.033DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6361700PMC
February 2019
12 Reads

Reconstruction of chronic proximal hamstring avulsion injuries using ipsilateral distal hamstring tendons results in good clinical outcomes and patient satisfaction.

Knee Surg Sports Traumatol Arthrosc 2018 Nov 23. Epub 2018 Nov 23.

Perth Orthopaedic and Sports Medicine Centre, West Perth, Western Australia, 6005, Australia.

Purpose: To report outcomes following proximal hamstring reconstruction employing an ipsilateral distal hamstring tendon autograft, in patients with chronic proximal ruptures.

Methods: Six patients presenting with a chronic proximal hamstring avulsion and a medial time from injury of 11.0 months (range 7-18), confirmed via magnetic resonance imaging, underwent proximal hamstring repair using a free graft harvested from the ipsilateral distal hamstrings. Read More

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http://dx.doi.org/10.1007/s00167-018-5310-yDOI Listing
November 2018
12 Reads

Endovascular Therapy Using Diluted Contrast Medium for Critical Limb Ischemia in a Patient with Chronic Kidney Disease.

Int Heart J 2019 Jan 20;60(1):226-230. Epub 2018 Nov 20.

Department of Cardiovascular Medicine, The University of Tokyo Hospital.

A high percentage of patients with critical limb ischemia have concurrent chronic kidney disease (CKD). However, endovascular therapy (EVT) can be problematic in CKD patients. Thus, we developed a method of EVT using digital subtraction angiography (DSA) with diluted contrast medium (low-concentration DSA), wherein DSA parameters were adjusted for diluted contrast angiography (1:10 dilution). Read More

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http://dx.doi.org/10.1536/ihj.18-125DOI Listing
January 2019
16 Reads
1.130 Impact Factor

Psychometric Evaluation of the Patient's Knee Implant Performance Questionnaire.

Value Health 2018 11 30;21(11):1305-1312. Epub 2018 Jun 30.

RTI Health Solutions, Research Triangle Park, NC, USA.

Objectives: To evaluate the psychometric properties of Patient's Knee Implant Performance Questionnaire (PKIP), a new patient-reported measure of knee implant functional performance assessing patient experiences before and after primary total knee arthroplasty (TKA).

Methods: The psychometric analysis sample (n = 761) was based on an ongoing, multisite, prospective, noncomparative, longitudinal study of patients undergoing TKA. The PKIP was completed at three study visits: presurgery (visit 1), less than 1 year (visit 3, days 1-303), and minimum 1 year (visit 4, days 304-668). Read More

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http://dx.doi.org/10.1016/j.jval.2018.05.006DOI Listing
November 2018
12 Reads

Passive-dynamic ankle-foot orthosis improves medium-term clinical outcomes after severe lower extremity trauma.

J R Army Med Corps 2018 Nov 9. Epub 2018 Nov 9.

Academic Department of Military Rehabilitation, Defence Medical Rehabilitation Centre (DMRC) Headley Court, Surrey, UK.

Introduction: Individuals with delayed below-knee amputation have previously reported superior clinical outcomes compared with lower limb reconstruction. The UK military have since introduced a passive-dynamic ankle-foot orthosis (PDAFO) into its rehabilitation care pathway to improve limb salvage outcomes. The aims were to determine if wearing a PDAFO improves medium-term clinical outcomes and what influence does multidisciplinary team (MDT) rehabilitation have after PDAFO fitting? Also, what longitudinal changes in clinical outcomes occur with MDT rehabilitation and how do these results compare with patients with previous lower extremity trauma discharged prior to PDAFO availability?

Methods: We retrospectively evaluated levels of mobility, activities of daily living, anxiety, depression and pain in a heterogeneous group of 23 injured UK servicemen 34±11 months after PDAFO provision. Read More

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http://jramc.bmj.com/lookup/doi/10.1136/jramc-2018-001082
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http://dx.doi.org/10.1136/jramc-2018-001082DOI Listing
November 2018
11 Reads

A tourniquet-less technique using saline epinephrine irrigation system in an arthroscopic ACL reconstruction in patient with history of popliteal artery ligation.

Int J Surg Case Rep 2018 1;53:157-162. Epub 2018 Nov 1.

Resident of Orthopaedic and Traumatology, Faculty of Medicine, Universitas Gadjah Mada, Indonesia; Department of Orthopaedic and Traumatology, Soeradji Tirtonegoro General Hospital Klaten, Indonesia; Department of Orthopaedic and Traumatology, Faculty of Medicine, Universitas Gadjah Mada - Sardjito General Hospital Yogyakarta, Indonesia.

Introduction: Pneumatic tourniquets use in surgery to create a bloodless surgical field. The majority of orthopaedic surgeon use a tourniquet inflated above systemic blood pressure during arthroscopic anterior cruciate ligament (ACL) reconstruction. A tourniquet use is not free of complications. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S22102612183046
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http://dx.doi.org/10.1016/j.ijscr.2018.10.040DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6216074PMC
November 2018
13 Reads

The Surgical Applications of Biologics in Sports Medicine.

Authors:
F Alan Barber

Sports Med Arthrosc Rev 2018 Dec;26(4):196-199

Plano Orthopedic Sports Medicine Center, Plano, TX.

Over the past 25 years an increased appreciation of the positive impact of biologic interventions has driven significant advances in the surgical treatment of shoulder and knee conditions. These biologic adjuncts to treatment promote improved outcomes and have set the stage and increased research and development in this arena. Read More

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http://dx.doi.org/10.1097/JSA.0000000000000219DOI Listing
December 2018
11 Reads

Does intervention improve the outcomes of patients after total knee replacement surgery?

Int J Orthop Trauma Nurs 2018 Nov 14;31:26-31. Epub 2018 Aug 14.

Professor School of Nursing, Azusa Pacific University, 701 West Foothill Blv, Azusa, 91701, California, USA. Electronic address:

Objective: To assess the effect of a one to one intervention by a nurse on the outcomes of patients undergoing Total Knee Replacement (TNR) surgery.

Methods: A quasi-experimental design was used with 60 participants, half of which received a one to one intervention including education and exercise training by a nurse prior to surgery. Follow up was at two and four weeks post-surgery to assess pain, knee function using the Hospital for Special Surgery (HSS) Knee Rating Sheet and activities of daily living measured on the Lower Extremity Functional Scale (LEFS). Read More

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https://linkinghub.elsevier.com/retrieve/pii/S18781241183004
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http://dx.doi.org/10.1016/j.ijotn.2018.08.001DOI Listing
November 2018
16 Reads

Age-Related Functional Decline Following Total Knee Arthroplasty: Risk Adjustment is Mandatory.

J Arthroplasty 2019 Feb 22;34(2):228-234. Epub 2018 Sep 22.

Department of Orthopedic Surgery, Hospital for Special Surgery, Orthopaedic Surgery - Adult Reconstruction Joint Replacement, New York, NY.

Background: Patient-reported outcome measures (PROMs) are being used increasingly to determine the success of total knee arthroplasty (TKA). Our goal is to investigate whether advanced age is associated with lower PROM scores.

Methods: We used our hospital's TKA registry to examine the relationship between age and PROMs in all patients 50-90 years of age who underwent unilateral or simultaneous bilateral primary TKA between 2007 and 2011 with a primary diagnosis of osteoarthritis. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S08835403183082
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http://dx.doi.org/10.1016/j.arth.2018.09.046DOI Listing
February 2019
3 Reads

Modeling and classification of gait patterns between anterior cruciate ligament deficient and intact knees based on phase space reconstruction, Euclidean distance and neural networks.

Biomed Eng Online 2018 Nov 1;17(1):165. Epub 2018 Nov 1.

Department of Orthopedics, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China.

Background: The anterior cruciate ligament (ACL) plays an important role in stabilizing translation and rotation of the tibia relative to the femur. ACL injury alters knee kinematics and usually links to the alternation of gait patterns. The aim of this study is to develop a new method to distinguish between gait patterns of patients with anterior cruciate ligament deficient (ACL-D) knees and healthy controls with ACL-intact (ACL-I) knees based on nonlinear features and neural networks. Read More

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https://biomedical-engineering-online.biomedcentral.com/arti
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http://dx.doi.org/10.1186/s12938-018-0594-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6211421PMC
November 2018
18 Reads

Reducing costly falls after total knee arthroplasty.

World J Orthop 2018 Oct 18;9(10):198-202. Epub 2018 Oct 18.

Department of Orthopaedic Surgery, University of Virginia Health System, Charlottesville, VA 22903, United States.

Aim: To investigate whether adductor canal nerve block (ACB) reduces patient falls when compared to femoral nerve block (FNB) after total knee arthroplasty (TKA).

Methods: We conducted an institutional review of all-cause falls after TKA from January 2013 to August 2016 using a quality improvement database. Our inclusion criteria were patients with diagnosis of primary knee osteoarthritis who underwent primary unilateral TKA with either a FNB or an ACB and sustained a fall during their hospitalization. Read More

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http://dx.doi.org/10.5312/wjo.v9.i10.198DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6198292PMC
October 2018
1 Read

A Single Bundle Anterior Cruciate Ligament Reconstruction (ACL-R) Using Hamstring Tendon Autograft and Tibialis Anterior Tendon Allograft: A Comparative Study.

Curr Med Sci 2018 Oct 20;38(5):818-826. Epub 2018 Oct 20.

Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.

The main purpose of this study was to compare the clinical outcomes of patients undergoing a single bundle anterior cruciate ligament reconstruction (ACL-R) of using quadrupled hamstring (4HT) autografts and two-strand tibialis anterior (2TA) allografts, and to find out the rate of graft failure and possible causes. We hypothesized that there would be no difference in the clinical outcome, and graft failure would be associated with the use of small sized allograft in young active males with high demand of sports activities. We retrospectively evaluated 222 patients (male, n=167, female, n=55) undergoing ACL-R between January 2010 and July 2014. Read More

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http://link.springer.com/10.1007/s11596-018-1948-4
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http://dx.doi.org/10.1007/s11596-018-1948-4DOI Listing
October 2018
138 Reads

Assessing lower extremity coordination and coordination variability in individuals with anterior cruciate ligament reconstruction during walking.

Gait Posture 2019 01 10;67:154-159. Epub 2018 Oct 10.

University of Tennessee Health Science Center, Memphis, TN 38163, United States.

Background: Despite our knowledge of several biomechanical risk factors related to anterior cruciate ligament (ACL) injury, such as decreased knee flexion, increased knee abduction, and increased hip flexion, adduction and internal rotation during walking, jogging, and landing from a jump, the incidence of ACL tears remains high. Quantifying variability in the lower extremity provides a continuous measure of joint coordination and function that may elicit an additional aspect of ACL injury mechanisms.

Research Question: The aim of this study was to assess joint coordination patterns and variability in individuals following ACL reconstruction (ACLR). Read More

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https://linkinghub.elsevier.com/retrieve/pii/S09666362183169
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http://dx.doi.org/10.1016/j.gaitpost.2018.10.010DOI Listing
January 2019
88 Reads
2.752 Impact Factor

[Measurement of the tibial alignment after total knee replacement without the extramedullary cutting guide].

Beijing Da Xue Xue Bao Yi Xue Ban 2018 Oct;50(5):850-854

Department of Orthopaedics, Peking University First Hospital, Beijing 100034, China.

Objective: To evaluate the accuracy and analysis of the influencing factors of the tibia prosthetic coronal alignment after total knee arthroplasty without tibia extramedullary cutting guide.

Methods: In the study, 76 patients (96 knees) who had primary total knee arthroplasty in Peking University First Hospital from February 2012 to April 2016 were selected retrospectively. All of the cases were performed by the same experienced orthopedic surgeon team. Read More

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October 2018
8 Reads

Inertial Sensor Angular Velocities Reflect Dynamic Knee Loading during Single Limb Loading in Individuals Following Anterior Cruciate Ligament Reconstruction.

Sensors (Basel) 2018 Oct 15;18(10). Epub 2018 Oct 15.

Human Performance Laboratory, Division of Biokinesiology and Physical Therapy, University of Southern California, 1540 E Alcazar St., CHP-155, Los Angeles, CA 90089-9006, USA.

Difficulty quantifying knee loading deficits clinically in individuals following anterior cruciate ligament reconstruction (ACLr) may underlie their persistence. Expense associated with quantifying knee moments (KMom) and power (KPow) with gold standard techniques precludes their use in the clinic. As segment and joint kinematics are used to calculate moments and power, it is possible that more accessible inertial sensor technology can be used to identify knee loading deficits. Read More

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http://dx.doi.org/10.3390/s18103460DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6210898PMC
October 2018

Atlas-Based 3D Intensity Volume Reconstruction from 2D Long Leg Standing X-Rays: Application to Hard and Soft Tissues in Lower Extremity.

Adv Exp Med Biol 2018 ;1093:105-112

Institute for Surgical Technology and Biomechanics, University of Bern, Bern, Switzerland.

In this chapter, the reconstruction of 3D intensity volumes of femur, tibia, and three muscles around the thigh region from a pair of calibrated X-ray images is addressed. We present an atlas-based 2D-3D intensity volume reconstruction approach by combining a 2D-2D nonrigid registration-based 3D landmark reconstruction procedure with an adaptive regularization step. More specifically, an atlas derived from the CT acquisition of a healthy lower extremity, together with the input calibrated X-ray images, is used to reconstruct those musculoskeletal structures. Read More

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http://link.springer.com/10.1007/978-981-13-1396-7_9
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http://dx.doi.org/10.1007/978-981-13-1396-7_9DOI Listing
January 2018
1 Read

3X-Knee: A Novel Technology for 3D Preoperative Planning and Postoperative Evaluation of TKA Based on 2D X-Rays.

Adv Exp Med Biol 2018 ;1093:93-103

Institute for Surgical Technology and Biomechanics, University of Bern, Bern, Switzerland.

This chapter introduces a solution called "3X-knee" that can robustly derive 3D models of the lower extremity from 2D long leg standing X-ray radiographs for preoperative planning and postoperative treatment evaluation of total knee arthroplasty (TKA). There are three core components in 3X-knee technology: (1) a knee joint immobilization apparatus, (2) an X-ray image calibration phantom, and (3) a statistical shape model-based 2D-3D reconstruction algorithm. These three components are integrated in a systematic way in 3X-knee to derive 3D models of the complete lower extremity from 2D long leg standing X-ray radiographs acquired in weight-bearing position. Read More

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http://link.springer.com/10.1007/978-981-13-1396-7_8
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http://dx.doi.org/10.1007/978-981-13-1396-7_8DOI Listing
January 2018
1 Read

Viabahn stent graft compared with prosthetic surgical above-knee bypass in treatment of superficial femoral artery disease: Long-term results of a retrospective analysis.

Medicine (Baltimore) 2018 Oct;97(40):e12449

Department of Thoracic and Cardiovascular Surgery, University Medical Center, Georg-August University, Göttingen.

The prosthetic surgical above-knee bypass (pAKB) is a standard therapy in superficial femoral artery (SFA) occlusive disease in absence of suitable vein. Viabahn graft has been established as a promising alternative. Since limited comparative data are available, we conducted a retrospective study to compare long-term outcomes of these 2 therapies in a real-world setting. Read More

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http://Insights.ovid.com/crossref?an=00005792-201810050-0001
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http://dx.doi.org/10.1097/MD.0000000000012449DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6200476PMC
October 2018
6 Reads

Sex Differences on the Landing Error Scoring System Among Individuals With Anterior Cruciate Ligament Reconstruction.

J Athl Train 2018 Sep 1;53(9):837-843. Epub 2018 Oct 1.

Department of Kinesiology, School of Education, School of Medicine and Public Health, The University of Wisconsin-Madison.

Context: : After anterior cruciate ligament reconstruction (ACLR), women have a greater risk of incurring a second anterior cruciate ligament injury and they display different landing movement patterns than men. It remains unclear if clinical movement-assessment tools, such as the Landing Error Scoring System (LESS), can detect sex differences in movement patterns after ACLR.

Objective: : To compare total LESS scores and individual LESS errors between men and women with a history of ACLR. Read More

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http://dx.doi.org/10.4085/1062-6050-459-17DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6208307PMC
September 2018

Bundled Payment Arrangements: Keys to Success.

J Am Acad Orthop Surg 2018 Dec;26(23):817-822

From the Department of Orthopaedic Surgery, NYU Langone Medical Center, New York, NY.

The Centers for Medicare & Medicaid Services is committed to moving 50% of its fee-for-service care to value-based alternative payment models by 2018. The Comprehensive Care for Joint Replacement model is a mandatory agency program that bundles lower extremity joint arthroplasties into episodes of care that extend from the index admission to 90 days after discharge. This program, which began on April 1, 2016, includes many of the hospitals that perform total joint arthroplasties. Read More

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http://Insights.ovid.com/crossref?an=00124635-900000000-9957
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http://dx.doi.org/10.5435/JAAOS-D-17-00022DOI Listing
December 2018
13 Reads

Comparison of drop jump landing biomechanics and asymmetry among adolescents with hamstring, patellar and quadriceps tendon autografts for anterior cruciate ligament reconstruction.

Knee 2018 Dec 22;25(6):1065-1073. Epub 2018 Sep 22.

Children's Orthopaedic Center, Children's Hospital Los Angeles, 4650 Sunset Blvd MS 69, Los Angeles, CA 90027, USA; Keck School of Medicine, University of Southern California, 1975 Zonal Ave, Los Angeles, CA 90033, USA. Electronic address:

Background: Adolescent anterior cruciate ligament reconstruction (ACLR) commonly utilizes hamstring (HT), patellar (PT) or quadriceps (QT) tendon autografts, but consensus is lacking regarding optimal graft choice. This study compared landing biomechanics and asymmetries among ACLR patients with HT, PT and QT grafts and uninjured controls.

Methods: This retrospective study included 61 adolescents with unilateral ACLR (27 HT, 20 PT, 14 QT; four to 12 months post-surgery, mean 6. Read More

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http://dx.doi.org/10.1016/j.knee.2018.09.005DOI Listing
December 2018
11 Reads

[Effect of adductor canal block combined with local infiltration anesthesia on rehabilitation of primary total knee arthroplasty].

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2018 Aug;32(8):1006-1011

Department of Orthopaedics, West China Hospital, Sichuan University, Chengdu Sichuan, 610041,

Objective: To investigate the effect of adductor canal block combined with local infiltration anesthesia on the rehabilitation of primary total knee arthroplasty (TKA).

Methods: A total of 104 patients who met the selection criteria for the first unilateral TKA between March 2017 and August 2017 were included in the study. They were randomly divided into trial group (53 cases) and control group (51 cases). Read More

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http://dx.doi.org/10.7507/1002-1892.201801082DOI Listing
August 2018
5 Reads

An Analysis of the Influence of Physical Activity Level on Total Knee Arthroplasty Expectations, Satisfaction, and Outcomes: Increased Revision in Active Patients at Five to Ten Years.

J Bone Joint Surg Am 2018 Sep;100(18):1539-1548

Adult Reconstruction & Joint Replacement Division, Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY.

This article was updated on September 19, 2018, because of a previous error. On page 1546, in the section titled "Discussion," the sentence that had read "Although a significant improvement was found in the vast majority of the inactive group, surprisingly, a majority of the active group (72.7%) reported a decrease in their activity levels below their baseline at 5 to 10 years postoperatively. Read More

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http://dx.doi.org/10.2106/JBJS.17.00920DOI Listing
September 2018
2 Reads

Research progress of knee-salvage treatment for knee osteoarthritis

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2018 10;32(10):1292-1296

Objective: To review the progress of knee-salvage treatment based on the step therapy idea for knee osteoarthritis (KOA).

Methods: The domestic and foreign literature in recent years was searched, and the treatments of KOA at different stages were summarized and analyzed.

Results: The treatment of KOA is aimed at alleviating symptoms, delaying structural changes of joints, maintaining joint function, and improving quality of life. Read More

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http://dx.doi.org/10.7507/1002-1892.201807027DOI Listing
October 2018

[Research progress of knee-salvage treatment for knee osteoarthritis].

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2018 10;32(10):1292-1296

Department of Orthopaedics, Beijing Jishuitan Hospital, Beijing, 100035, P.R.China.

Objective: To review the progress of knee-salvage treatment based on the step therapy idea for knee osteoarthritis (KOA).

Methods: The domestic and foreign literature in recent years was searched, and the treatments of KOA at different stages were summarized and analyzed.

Results: The treatment of KOA is aimed at alleviating symptoms, delaying structural changes of joints, maintaining joint function, and improving quality of life. Read More

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http://www.rrsurg.com/article/10.7507/1002-1892.201807027
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http://dx.doi.org/10.7507/1002-1892.201807027DOI Listing
October 2018
27 Reads

Natural remodeling of the distal anastomosis of an above-knee femoropopliteal bypass depicted by CT angiography of lower limbs improves geometry of the reconstruction.

Physiol Res 2018 Dec 11;67(6):857-862. Epub 2018 Sep 11.

Fourth Department of Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Czech Republic, Department of Radiology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic.

The geometry of the distal anastomosis of a femoropopliteal bypass influences local hemodynamics and formation of intimal hyperplasia. We hypothesized that the distal anastomosis of an above-knee femoropopliteal bypass undergoes remodeling that results in displacement of the original course of the popliteal artery and change in the anastomosis angle. We identified 43 CT angiography examination with proximal femoropopliteal bypass and either a preserved contralateral popliteal artery or previous CTA before construction of the bypass for comparison. Read More

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December 2018

Mandatory Medicare Bundled Payment Program for Lower Extremity Joint Replacement and Discharge to Institutional Postacute Care: Interim Analysis of the First Year of a 5-Year Randomized Trial.

JAMA 2018 09;320(9):892-900

National Bureau of Economic Research, Cambridge, Massachusetts.

Importance: Bundled payments are an increasingly common alternative payment model for Medicare, yet there is limited evidence regarding their effectiveness.

Objective: To report interim outcomes from the first year of implementation of a bundled payment model for lower extremity joint replacement (LEJR).

Design, Setting, And Participants: As part of a 5-year, mandatory-participation randomized trial by the Centers for Medicare & Medicaid Services, eligible metropolitan statistical areas (MSAs) were randomized to the Comprehensive Care for Joint Replacement (CJR) bundled payment model for LEJR episodes or to a control group. Read More

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http://dx.doi.org/10.1001/jama.2018.12346DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6142993PMC
September 2018
3 Reads

Association of Hospital Participation in a Medicare Bundled Payment Program With Volume and Case Mix of Lower Extremity Joint Replacement Episodes.

JAMA 2018 09;320(9):901-910

Department of Medical Ethics and Health Policy, Perelman School of Medicine, University of Pennsylvania, Philadelphia.

Importance: Medicare's Bundled Payments for Care Improvement (BPCI) initiative for lower extremity joint replacement (LEJR) surgery has been associated with a reduction in episode spending and stable-to-improved quality. However, BPCI may create unintended effects by prompting participating hospitals to increase the overall volume of episodes paid for by Medicare, which could potentially eliminate program-related savings or prompt them to shift case mix to lower-risk patients.

Objective: To evaluate whether hospital BPCI participation for LEJR was associated with changes in overall volume and case mix. Read More

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http://dx.doi.org/10.1001/jama.2018.12345DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6142996PMC
September 2018
6 Reads

COPD as a risk factor of the complications in lower limb arthroplasty: a patient-matched study.

Int J Chron Obstruct Pulmon Dis 2018 21;13:2495-2499. Epub 2018 Aug 21.

Department of Pulmonary and Critical Care Medicine, University Hospital Marburg, Marburg, Germany.

Purpose: A relevant proportion of patients undergoing joint replacement surgery for the treatment of osteoarthritis exhibit COPD. This coincidence may result from an increased prevalence of both the diseases in elderly patients. In this study, COPD, which is known to be associated with a variety of comorbidities, and its potential interactions, eg, mediated via systemic inflammation, are discussed. Read More

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http://dx.doi.org/10.2147/COPD.S161577DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6110158PMC
January 2019
6 Reads

Repair of knee deep burn wound with descending genicular artery-saphenous artery perforator flaps in elderly patients (a STROBE-compliant article).

Medicine (Baltimore) 2018 Aug;97(35):e12127

Department of Bone surgery, Central Hospital of Hanzhong City, Hanzhong, China.

It is difficult to repair knee deep burn wounds in elderly patients. In this study, we observed the therapeutic effects of descending genicular artery-saphenous artery perforator flaps on knee deep burn wounds in elderly patients.Between December 2013 and February 2018, we repaired knee third-degree burn wounds using descending genicular artery-saphenous artery perforator flaps of 20 × 12 cm to 23 × 13 cm in 56 elderly patients. Read More

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http://dx.doi.org/10.1097/MD.0000000000012127DOI Listing
August 2018
14 Reads

Walking Ground Reaction Force Post-ACL Reconstruction: Analysis of Time and Symptoms.

Med Sci Sports Exerc 2019 Feb;51(2):246-254

Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC.

Purpose: The association between lower-extremity loading and clinically relevant knee symptoms at different time points after anterior cruciate ligament reconstruction (ACLR) is unclear. Vertical ground reaction force (vGRF) from walking was compared between individuals with and without clinically relevant knee symptoms in three cohorts: <12 months post-ACLR, 12-24 months post-ACLR, and >24 months post-ACLR.

Methods: One hundred twenty-eight individuals with unilateral ACLR were classified as symptomatic or asymptomatic, based on previously defined cutoff values for the Knee Osteoarthritis and Injury Outcome Score (<12 months post-ACLR [symptomatic n = 28, asymptomatic n = 24]; 12-24 months post-ACLR [symptomatic n = 15, asymptomatic n = 15], and >24 months post-ACLR [symptomatic, n = 13; asymptomatic, n = 33]). Read More

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http://Insights.ovid.com/crossref?an=00005768-900000000-9682
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http://dx.doi.org/10.1249/MSS.0000000000001776DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6335151PMC
February 2019
61 Reads

Donor-Site Morbidity of Vascularized Bone Flaps from the Distal Femur: A Systematic Review.

Plast Reconstr Surg 2018 09;142(3):363e-372e

Baltimore, Md.; Boston, Mass.; and Aurora, Colo. From The Curtis National Hand Center, MedStar Union Memorial Hospital; the Division of Plastic and Reconstructive Surgery, Beth Israel Deaconess Medical Center; and the Division of Plastic and Reconstructive Surgery, University of Colorado Medical Center.

Background: Vascularized grafts from the femur, including the medial femoral condyle and medial femoral trochlea, are increasingly being used. It is critical to understand the lower extremity complications from flap harvest.

Methods: The authors searched available literature reporting on femoral flaps using PubMed, Embase, Cochrane Database, and Web of Science. Read More

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http://dx.doi.org/10.1097/PRS.0000000000004691DOI Listing
September 2018
1 Read

An Open-label Single-arm Trial of a Novel Extramedullary Guide Coordinated with 3D Surgical Assistive Software for Total Knee Arthroplasty.

Acta Med Okayama 2018 Aug;72(4):441-445

Department of Orthopedic Surgery and Rheumatology, Nagoya Medical Center, Nagoya 460-0001,

There is no assistive device for extramedullary surgery coordinated with 3D surgical assistive software for the total knee arthroplasty (TKA). We developed a novel extramedullary universal guide coordinated with 3D surgical assistive software and a novel extramedullary patient-specific assistive guide for the placement of femoral components by referring to an area not affected by cartilage or bone spurs, and filed a patent application. In this study, we visualize and reconstruct the total alignment of the lower extremity in TKA using these surgical devices, and validate their precision. Read More

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http://ousar.lib.okayama-u.ac.jp/56186
Publisher Site
http://dx.doi.org/10.18926/AMO/56186DOI Listing
August 2018
8 Reads

Alignment and Balance Methods in Total Knee Arthroplasty.

J Am Acad Orthop Surg 2018 Oct;26(20):709-716

From the Department of Orthopedic Surgery, New York University Langone Medical Center, New York, NY (Dr. Jaffe), Orthopedic Institute of New Jersey, Moristown, NJ (Dr. Dundon), and Vancouver, BC Canada (Dr. Camus).

Total knee arthroplasty is one of the most commonly performed orthopaedic surgical procedures in the United States. Primary concepts in the surgical technique include restoring limb alignment and soft-tissue balance about the knee. Currently, traditional mechanical alignment concepts that focus on restoring neutral limb alignment have been challenged by the principle of kinematic alignment. Read More

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http://dx.doi.org/10.5435/JAAOS-D-16-00428DOI Listing
October 2018
18 Reads

[Effectiveness of one-stage total knee arthroplasty with tibial stem extender for knee arthritis complicated with tibial stress fracture].

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2018 09;32(9):1177-1180

Department of Bone and Joint Surgery, Xi'an Honghui Hospital, Affiliated to Medical College of Xi'an Jiaotong University, Xi'an Shaanxi, 710054, P.R.China.

Abstract: To evaluate the early effectiveness of one-stage total knee arthroplasty (TKA) with tibial stem extender for knee arthritis complicated with tibial stress fractures.

Methods: Between January 2014 and November 2016, 12 patients (12 knees) with knee arthritis and tibial stress fractures underwent one-stage TKA with tibial stem extender. There were 5 males and 7 females with an average age of 71. Read More

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http://dx.doi.org/10.7507/1002-1892.201802047DOI Listing
September 2018
16 Reads