3,899 results match your criteria Lower Extremity Reconstruction Knee


Prediction of local fixed charge density loss in cartilage following ACL injury and reconstruction: a computational proof-of-concept study with MRI follow-up.

J Orthop Res 2020 Jul 8. Epub 2020 Jul 8.

Department of Applied Physics, University of Eastern Finland, Yliopistonranta 1, FI-70210, Kuopio, Finland.

The purpose of this proof-of-concept study was to develop 3D patient-specific mechanobiological knee joint models to simulate alterations in the fixed charged density (FCD) around cartilage lesions during the stance phase of the walking gait. Two patients with ACL reconstructed knees were imaged at 1- and 3-years after surgery. The MRI data was used for segmenting the knee geometries, including the cartilage lesions. Read More

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http://dx.doi.org/10.1002/jor.24797DOI Listing

The Effect of Perforator Skeletonization on Pedicled Fasciocutaneous Flaps of the Lower Extremity: A Systematic Review.

J Reconstr Microsurg 2020 Jun 24. Epub 2020 Jun 24.

Division of Plastic Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin.

Background:  Lower extremity defects often require free tissue transfer due to a paucity of local donor sites. Locoregional perforator-based flaps offer durable, single-stage reconstruction while avoiding the pitfalls of microsurgery. Multiple harvest techniques are described, yet few studies provide outcome comparisons. Read More

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http://dx.doi.org/10.1055/s-0040-1713598DOI Listing

A Nonproprietary Movement Analysis System (MoJoXlab) Based on Wearable Inertial Measurement Units Applicable to Healthy Participants and Those With Anterior Cruciate Ligament Reconstruction Across a Range of Complex Tasks: Validation Study.

JMIR Mhealth Uhealth 2020 Jun 16;8(6):e17872. Epub 2020 Jun 16.

Biomechanics and Bioengineering Research Centre Versus Arthritis, Cardiff University, Cardiff, United Kingdom.

Background: Movement analysis in a clinical setting is frequently restricted to observational methods to inform clinical decision making, which has limited accuracy. Fixed-site, optical, expensive movement analysis laboratories provide gold standard kinematic measurements; however, they are rarely accessed for routine clinical use. Wearable inertial measurement units (IMUs) have been demonstrated as comparable, inexpensive, and portable movement analysis toolkits. Read More

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http://dx.doi.org/10.2196/17872DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7327594PMC

Characteristics of Iatrogenic Nerve Injury from Orthopedic Surgery Correlate with Time to Subspecialty Presentation.

Plast Reconstr Surg Glob Open 2020 Mar 20;8(3):e2678. Epub 2020 Mar 20.

Division of Hand Surgery, Department of Orthopaedic Surgery, 1520 San Pablo Street - Suite 200, University of Southern California, Los Angeles, California 90033, USA.

There is no current literature examining iatrogenic nerve injury resulting from orthopedic procedures across subspecialties and anatomic areas. This study uses a single peripheral nerve surgeon's experience to investigate the variable time to presentation of adult patients with iatrogenic nerve injury after orthopedic surgery.

Methods: A retrospective review of patients examined in Peripheral Nerve Clinic (PNC) from January 1, 2012, to April 1, 2018, at a single, private, university hospital was performed. Read More

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http://dx.doi.org/10.1097/GOX.0000000000002678DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7253260PMC

Reconsidering Reciprocal Length Patterns of the Anteromedial and Posterolateral Bundles of the Anterior Cruciate Ligament During In Vivo Gait.

Am J Sports Med 2020 Jul 9;48(8):1893-1899. Epub 2020 Jun 9.

Department of Orthopaedic Surgery, Duke University, Durham, North Carolina, USA.

Background: Some cadaveric studies have indicated that the anterior cruciate ligament (ACL) consists of anteromedial and posterolateral bundles that display reciprocal function with regard to knee flexion. However, several in vivo imaging studies have suggested that these bundles elongate in parallel with regard to flexion. Furthermore, the most appropriate description of the functional anatomy of the ACL is still debated, with the ACL being described as consisting of 2 or 3 bundles or as a continuum of fibers. Read More

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http://dx.doi.org/10.1177/0363546520924168DOI Listing

What Are the Challenges and Complications of Sterilizing Autografts with Liquid Nitrogen for Malignant Bone Tumors? A Preliminary Report.

Clin Orthop Relat Res 2020 Jun 3. Epub 2020 Jun 3.

S. Hindiskere, S. Doddarangappa, P. S. Chinder, HCG Hospital, Bangalore, Karnataka, India.

Background: Reconstruction of defects after resection of malignant bone tumors with liquid nitrogen-sterilized recycled autografts is an alternative to bone allografts and endoprostheses in resource-constrained environments. Most studies reporting favorable outcomes with liquid nitrogen-sterilized autografts for bone reconstruction are geographically restricted to a few countries, and the technical challenges of routinely using liquid nitrogen intraoperatively, especially when using the pedicle freezing technique, has not been documented.

Questions/purposes: (1) What are the technical challenges of liquid nitrogen sterilization of bone tumors for inexperienced surgeons? (2) What are the complications associated with the procedure?

Methods: Between May 2017 and October 2019, 88 patients underwent limb salvage procedures for malignant bone tumors of the extremities at our institution. Read More

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http://dx.doi.org/10.1097/CORR.0000000000001347DOI Listing

The Relationship Between Injury-Related Fear and Visuomotor Reaction Time in Individuals With a History of Anterior Cruciate Ligament Reconstruction.

J Sport Rehabil 2020 May 29:1-7. Epub 2020 May 29.

Context: Deficits in reaction time, decreased self-reported knee function, and elevated levels of injury-related fear have been observed in individuals who sustain anterior cruciate ligament injury. Understanding the relationship between these variables may provide the impetus to further investigate effective intervention strategies to address these deficits in individuals after anterior cruciate ligament reconstruction (ACLR).

Objective: To examine the relationship between injury-related fear and lower-extremity visuomotor reaction time (VMRT) in individuals with a history of ACLR. Read More

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http://dx.doi.org/10.1123/jsr.2019-0511DOI Listing

Extended Version of a Test Battery for Visual Assessment of Postural Orientation Errors: Face Validity, Internal Consistency, and Reliability.

Phys Ther 2020 May 13. Epub 2020 May 13.

Department of Health Sciences, Lund University.

Objective: Undesirable postural orientation may be a risk factor for a second anterior cruciate ligament (ACL) injury. The purpose of this study was to evaluate face validity, internal consistency, and interrater reliability of an extended version of a previous test battery for visual assessment of postural orientation errors (POEs) in patients during late phase of rehabilitation following ACL reconstruction (ACLR) (ie, when they have initiated jumping exercises).

Methods: This study used a cross-sectional design. Read More

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http://dx.doi.org/10.1093/ptj/pzaa092DOI Listing

[Local flaps as a last attempt to avoid lower extremity amputation: an overview].

Unfallchirurg 2020 May 8. Epub 2020 May 8.

Klinik für Unfall‑, Hand‑, Plastische und Wiederherstellungschirurgie, Universitätsklinikum Würzburg, Oberdürrbacherstr. 6, 97080, Würzburg, Deutschland.

Background: Soft tissue reconstruction in aged patients is challenging. Free tissue transfer can be carried out in healthy patients with a high success rate despite old age. When free tissue transfer is contraindicated in multimorbid patients, local flaps are often chosen, which are associated with a high complication rate. Read More

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http://dx.doi.org/10.1007/s00113-020-00814-6DOI Listing

Neural activity for hip-knee control in those with anterior cruciate ligament reconstruction: A task-based functional connectivity analysis.

Neurosci Lett 2020 Jun 5;730:134985. Epub 2020 May 5.

Ohio Musculoskeletal and Neurological Institute, Ohio University, Athens, OH, USA; Division of Athletic Training, School of Applied Health Sciences and Wellness, College of Health Sciences and Professions, Ohio University, Athens, OH, USA.

Anterior cruciate ligament injury may induce neurophysiological changes for sensorimotor control. Neuroimaging investigations have revealed unique brain activity patterns for knee movement following injury, indicating potential neural mechanisms underlying aberrant neuromuscular control that may contribute to heightened risk of secondary injury, altered movement patterns and poor patient outcomes. However, neuroimaging paradigms thus far have been limited to single joint, single motion knee tasks. Read More

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http://dx.doi.org/10.1016/j.neulet.2020.134985DOI Listing

[Clinical effectiveness of simultaneous reconstructions of multiple joint scar contracture deformity of limb].

Zhonghua Shao Shang Za Zhi 2020 Apr;36(4):308-312

Department of Burn Reconstructive Surgery, Xiangya Hospital, Central South University, Changsha 410008, China.

To explore the clinical effects of simultaneous reconstruction of multiple joint scar contracture deformity of limb. From January 2010 to June 2018, 24 patients with multiple joint scar contracture deformity of the same limb were reconstructed in simultaneous operations in Xiangya Hospital of Central South University, including 16 males and 8 females, aged 3-42 years, with 15 patients having deformities in the upper limbs and 9 patients having deformities in the lower limbs. One operation was performed to repair contracture deformity of axillary fossa and elbow in 3 patients, cubital fossa and palmar of wrist in 4 patients, cubital fossa and hand in 5 patients, palmar of wrist, palm, and palmar of finger in 3 patients, groin and medial knee in 2 patients, popliteal fossa and posterior ankle in 1 patient, and anterior ankle and dorsum of foot in 6 patients. Read More

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http://dx.doi.org/10.3760/cma.j.cn501120-20190124-00016DOI Listing

An invited commentary on: "Lingering risk: A meta-analysis of outcomes following primary total knee arthroplasty for patients with post-traumatic arthritis" (int J surg. 2020;77:163-172).

Int J Surg 2020 06 23;78:121. Epub 2020 Apr 23.

Department of Orthopedic, Qilu Hospital of Shandong University (Qingdao), Shandong, 266035, China. Electronic address:

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http://dx.doi.org/10.1016/j.ijsu.2020.04.035DOI Listing

Different Surgical Reconstructions for Femoral Nerve Injury: A Clinical Study on 9 Cases.

Ann Plast Surg 2020 May;84(5S Suppl 3):S171-S177

From the Department of Hand Surgery, Huashan Hospital, Fudan University.

Background: Femoral nerve palsy can cause loss in quadriceps function and knee extension disability, which may lead to severe lower extremity impairment. The obturator nerve trunk transfer in the pelvic, the obturator nerve mortal branches transfer out of the pelvic, along with nerve graft, was introduced years ago to restore femoral nerve function. However, the outcomes of these procedures have never been compared. Read More

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http://dx.doi.org/10.1097/SAP.0000000000002371DOI Listing

[Amputations around the knee].

Orthopade 2020 May;49(5):461-470

Klinik und Poliklinik für Orthopädie und Sportorthopädie, Klinikum rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, München, Deutschland.

An amputation around, through or below the knee joint constitutes a "huge" change in a patient's life. In Orthopaedics, amputations are most frequently performed in cases with musculoskeletal tumours or failed total knee arthroplasty. A multidisciplinary team approach (surgeon, anaesthetist, pain specialists, orthotist, psychologist etc. Read More

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http://dx.doi.org/10.1007/s00132-020-03906-8DOI Listing

Five Year Patency of Venous Descending Genicular Artery Bypass.

Eur J Vasc Endovasc Surg 2020 Jun 4;59(6):938. Epub 2020 Apr 4.

Centre Hospitalier Universitaire d'Angers, Angers, France.

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http://dx.doi.org/10.1016/j.ejvs.2020.02.018DOI Listing

Functional progression milestones following anterior cruciate ligament reconstruction are more appropriate than time-based criteria: a survey among the ESSKA.

Knee Surg Sports Traumatol Arthrosc 2020 Apr 2. Epub 2020 Apr 2.

Orthopaedic and Sports Medicine Clinic, Montijo, Portugal.

Purpose: The aim of this study was to report current rehabilitation recommendations after ACL reconstruction in ESSKA community, with a particular focus on the specific criteria utilized to guide activity progression METHODS: A web-based survey was developed to investigate preferences between time-based and functional ACL reconstruction rehabilitation progression milestones of ESSKA community.

Results: Eight hundred and twenty completed questionnaires were received. Responders were from 86 different countries worldwide, 63% of them from European countries. Read More

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http://dx.doi.org/10.1007/s00167-020-05960-3DOI Listing

Knee Joint and Quadriceps Dysfunction in Individuals With Anterior Knee Pain, Anterior Cruciate Ligament Reconstruction, and Meniscus Surgery: A Cross-Sectional Study.

J Sport Rehabil 2020 Apr 1:1-8. Epub 2020 Apr 1.

Context: While arthrogenous muscle inhibition associated with knee injuries is evident, the relative magnitude of functional deficiency related to each individual knee pathology is unclear.

Objective: To compare the knee joint and quadriceps dysfunction among patients with anterior knee pain (AKP) without surgical history and those with surgical history (anterior cruciate ligament reconstruction [ACLR]; meniscus surgery) without current AKP, with matched healthy controls.

Design: Cross-sectional study. Read More

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http://dx.doi.org/10.1123/jsr.2018-0482DOI Listing

Reduction in patient outcomes but implant-derived preservation of function following total knee arthroplasty: longitudinal follow-up of a randomized controlled trial.

Bone Joint J 2020 Apr;102-B(4):434-441

Department of Orthopaedics and Trauma, University of Edinburgh, Edinburgh, UK.

Aims: There are comparatively few randomized studies evaluating knee arthroplasty prostheses, and fewer still that report longer-term functional outcomes. The aim of this study was to evaluate mid-term outcomes of an existing implant trial cohort to document changing patient function over time following total knee arthroplasty using longitudinal analytical techniques and to determine whether implant design chosen at time of surgery influenced these outcomes.

Methods: A mid-term follow-up of the remaining 125 patients from a randomized cohort of total knee arthroplasty patients (initially comprising 212 recruited patients), comparing modern (Triathlon) and traditional (Kinemax) prostheses was undertaken. Read More

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http://dx.doi.org/10.1302/0301-620X.102B4.BJJ-2019-0767.R2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7133720PMC

The medial sural artery perforator (MSAP) flap: A versatile flap for lower extremity reconstruction.

Injury 2020 Apr 12;51(4):1077-1085. Epub 2020 Feb 12.

Southmead Hospital, North Bristol NHS Trust Westbury-on-Trym, Bristol, BS10 5NB, United Kingdom. Electronic address:

Background: The medial sural artery perforator (MSAP) flap provides a thin, pliable and durable soft tissue reconstruction with adequate pedicle length and low donor morbidity. It is an ideal choice for small-to-moderate defects of the lower extremity, although it does have limitations. We report our experience of the flap in a three-pronged anatomical, clinical and patient reported outcome-based study. Read More

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http://dx.doi.org/10.1016/j.injury.2020.02.060DOI Listing

Stiffness After Total Knee Arthroplasty: Is It a Result of Spinal Deformity?

J Arthroplasty 2020 Jun 19;35(6S):S330-S335. Epub 2020 Feb 19.

Hospital for Special Surgery, Adult Reconstruction and Joint Replacement Service, New York, NY.

Background: There are no studies to date analyzing the effect of spinal malalignment on outcomes of total knee arthroplasty (TKA). Knee flexion is a well-described lower extremity compensatory mechanism for maintaining sagittal balance with increasing spinal deformity. The purpose of this study was to determine whether a subset of patients with poor range of motion (ROM) after TKA have unrecognized spinal deformity, predisposing them to knee flexion contractures and stiffness. Read More

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http://dx.doi.org/10.1016/j.arth.2020.02.031DOI Listing

[Common peroneal nerve "pre-release" to avoid nerve palsy in total knee arthroplasty for severe valgus deformities].

Zhonghua Yi Xue Za Zhi 2020 Feb;100(7):516-520

Department of Orthopedics, Fujian Medical University, Fujian Provincial Hospital, Fuzhou 350001, China.

To investigate the clinical efficacy of common peroneal nerve "pre-release" to avoid nerve palsy in total knee arthroplasty for severe valgus deformities. Twenty patients (22 knees) with severe valgus deformities were prospectively and continuously included in Fujian Province Hospital from January 2010 to January 2016. Medial parapatellar arthrotomy, femoral distal resection using the intramedullary cutting guide with 3° to 5° of valgus and the common peroneal nerve "pre-release" was performed, the patella was routinely resurfaced. Read More

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http://dx.doi.org/10.3760/cma.j.issn.0376-2491.2020.07.008DOI Listing
February 2020

Posterior cruciate ligament lesions are mainly present as combined lesions even in sports injuries.

Knee Surg Sports Traumatol Arthrosc 2020 Jul 10;28(7):2091-2098. Epub 2020 Mar 10.

Centre for Sports Orthopedics and Special Joint Surgery, Orthopedic Hospital Markgroeningen, Kurt-Lindemann-Weg 10, 71706, Markgroeningen, Germany.

Purpose: To analyse 1000 consecutive patients, treated with isolated or combined posterior cruciate ligament (PCL) reconstruction in a single centre according to the epidemiological factors and differences in injury patterns depending on the activity during trauma.

Methods: Between 2004 and 2019, one thousand isolated and combined PCL reconstructions were performed. The medical charts and surgical reports of all patients were analysed regarding epidemiological factors. Read More

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http://dx.doi.org/10.1007/s00167-020-05919-4DOI Listing

ALT flap and reverse sural flap for simultaneous soft tissue coverage of both medial and lateral calf wounds in a diabetic patient.

Injury 2020 Feb 21. Epub 2020 Feb 21.

"Bagdasar-Arseni" Emergency Hospital, Plastic and Reconstructive Department, University of Medicine and Pharmacy "Carol Davila", 10-12 Berceni Road, District 4, 41914 Bucharest, Romania.

Defects of the lower limb are generally difficult to correct, especially in patients with associated pathologies, and they represent a challenge for the reconstructive surgeon. The sural flap provides considerable versatility for lower limb reconstructions, successfully covering defects located between the knee and the ankle or the heel. Most frequently, this flap is used for defects located in the middle to distal third of the lower limb. Read More

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http://dx.doi.org/10.1016/j.injury.2020.02.103DOI Listing
February 2020

Preliminary Clinical, Radiographic, and Patient-Reported Outcomes of the Medial Femoral Trochlea Osteochondral Free Flap for Lunate Reconstruction in Advanced Kienböck Disease.

J Hand Surg Am 2020 Mar 5. Epub 2020 Mar 5.

Curtis National Hand Center, Baltimore, MD. Electronic address:

Purpose: We aimed to describe the radiographic, functional, and patient-reported outcomes (PROs) of medial femoral trochlea osteochondral free flap reconstruction of the proximal lunate in stage IIIA and IIIB Kienböck disease.

Methods: Eighteen adult patients underwent medial femoral trochlea reconstruction of the proximal lunate for advanced Kienböck disease by a single surgeon. Eight of these patients returned for clinical examination, radiographs, and completion of PRO questionnaires. Read More

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http://dx.doi.org/10.1016/j.jhsa.2019.12.008DOI Listing

Effect of Meniscal Repair on Joint Loading in Athletes With Anterior Cruciate Ligament Reconstruction at 3 Months Following Surgery.

J Sport Rehabil 2020 Mar 4:1-6. Epub 2020 Mar 4.

Context: Joint loading following anterior cruciate ligament reconstruction (ACL-R) is thought to influence long-term outcomes. However, our understanding of the role of meniscus repair at the time of ACL-R on early joint loading is limited.

Objective: To assess if differences in total energy absorption and energy absorption contribution of the hip, knee, and ankle exist in the early stages of rehabilitation between patients who received an isolated ACL-R and those with concomitant meniscal repairs. Read More

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http://dx.doi.org/10.1123/jsr.2019-0374DOI Listing

Successful Lower Limb Replantation of Knee-Level Amputation in a Child: A Case Report.

J Foot Ankle Surg 2020 Mar - Apr;59(2):427-430

Surgeon, Orthopedics Department, Ningxia Armed Police General Hospital, Yinchuan, Ningxia Hui Autonomous Region, China.

Replantation of a lower extremity amputated at the knee joint level in a child is rare. We present a case of a 3-year-old child with his right leg totally severed from the knee joint in a traumatic accident. After 5 hours of cold ischemia time, together with antishock therapies, the child underwent leg replantation under stable conditions. Read More

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http://dx.doi.org/10.1053/j.jfas.2019.08.024DOI Listing
July 2018
0.979 Impact Factor

The use of modified keystone flap in periarticular or large superficial tumor resection surgery.

J Surg Oncol 2020 Jun 3;121(7):1090-1096. Epub 2020 Mar 3.

Department of Plastic and Reconstruction, Shanghai Changhai Hospital Affiliated to Second Military Medical University, Shanghai, China.

Background And Objectives: The keystone design perforator island flap (KDPIF) is often used to cover defects in reliable blood supply and similar skin patterns, but its mobility is limited, especially when the wound is large or occurs around joints. Here, we describe a modified KDPIF, boat-shaped flap. We added a V shape along the lateral arc, forming a V-Y flap on KDPIF's outer arc shapes like a sail. Read More

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http://dx.doi.org/10.1002/jso.25879DOI Listing

[Effect of total knee arthroplasty under computer navigation on intraoperative blood loss and joint function recovery].

Zhongguo Gu Shang 2020 Jan;33(1):15-20

Kaifeng Central Hospital, Kaifeng 475000, Henan, China.

Objective: To analyze the effect of computer navigation assisted total knee arthroplasty on intraoperative hemorrhage and postoperative joint function recovery in patients with knee osteoarthritis.

Methods: From February 2015 to December 2017, 65 patients with knee osteoarthritis treated by traditional total knee arthroplasty were retrospectively analyzed as the control group and 65 patients with knee osteoarthritis treated by total knee arthroplasty under computer navigation as the experimental group. Before operation, all patients showed red swelling pain of knee, pain of going up and down stairs, and pain and discomfort of waist when sitting up and standing up. Read More

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http://dx.doi.org/10.3969/j.issn.1003-0034.2020.01.004DOI Listing
January 2020

Indications and Limitations of Bilayer Wound Matrix-Based Lower Extremity Reconstruction: A Multidisciplinary Case-Control Study of 191 Wounds.

Plast Reconstr Surg 2020 03;145(3):813-822

Philadelphia, Pa. From the Division of Plastic Surgery, Department of Surgery, and the Department of Orthopedic Surgery, University of Pennsylvania.

Background: Little is known about the efficacy of newer skin substitute scaffolds to reconstruct complex lower extremity wounds. The investigators present a multihospital experience of reconstructive surgeons utilizing collagen-GAG bilayer wound matrix in lower extremity soft-tissue reconstruction with the goals to (1) characterize a suitable patient population, (2) categorize failures to optimize patient selection, and (3) determine wound factors affecting success.

Methods: Subjects underwent collagen-GAG-based lower extremity wound reconstruction from May of 2010 to June of 2017. Read More

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http://dx.doi.org/10.1097/PRS.0000000000006609DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7043722PMC

Clinical and Biomechanical Outcomes of One-Stage Treatment of a Simultaneous Ipsilateral Patellar Tendon and ACL Tear Combined with a Tibial Plateau Fracture: A Case Study.

Case Rep Orthop 2020 4;2020:5793948. Epub 2020 Feb 4.

Department of Orthopaedics and Traumatology, University Hospital Basel, Spitalstrasse 21, 4031 Basel, Switzerland.

Simultaneous ipsilateral patellar tendon (PT) and anterior cruciate ligament (ACL) tear is a rare injury. Associated meniscal and ligamentous injuries are common but frequently initially missed. In contrast, to date, there is no report of associated fractures. Read More

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http://dx.doi.org/10.1155/2020/5793948DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7024102PMC
February 2020

Lower limb joint repair and replacement: an overview.

F1000Res 2019 19;8. Epub 2019 Dec 19.

Department of Musculoskeletal Disorders, School of Medicine and Surgery, University of Salerno, Baronissi, Italy.

In the last few years, much has been published concerning total joint arthroplasty, and debates and discussions to new questions and points of view started many years ago. In this commentary, we report the latest evidence of best practice in the field of lower limb arthroplasty; this evidence is based on a literature search conducted by using PubMed and Scopus databases with a time limit of five years. We found novel evidence regarding cemented and not cemented implant, implant design, anticoagulant use, tourniquets, and other aspects of joints replacement surgery that we consider a common part of modern orthopedic practice. Read More

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http://dx.doi.org/10.12688/f1000research.17200.1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6971838PMC

Biomechanical and Functional Improvements Gained by Proximal Tibia Osteotomy Correction of Genu Varum in Patients with Knee Pain.

HSS J 2020 Feb 19;16(1):30-38. Epub 2019 Mar 19.

1Limb Lengthening and Complex Reconstruction Service, Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021 USA.

Background: Mechanical axis malalignment contributes to abnormal forces across the knee joint. Genu varum, or increased medial mechanical axis deviation (MAD), increases force transmission and contact pressures to the medial compartment. With increasing MAD and femoral-tibial mechanical axis angle (MAA), contact forces within the medial or lateral compartment of the knee significantly increase with increasing deformity. Read More

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http://dx.doi.org/10.1007/s11420-019-09670-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6973828PMC
February 2020

Satisfactory functional and MRI outcomes at the foot and ankle following harvesting of full thickness peroneus longus tendon graft.

Bone Joint J 2020 Feb;102-B(2):205-211

Department of Orthopaedic Surgery, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.

Aims: To evaluate the donor site morbidity and tendon morphology after harvesting whole length, full-thickness peroneus longus tendon (PLT) proximal to the lateral malleolus for ligament reconstructions or tendon transfer.

Methods: A total of 21 eligible patients (mean age 34.0 years (standard deviation (SD) 11. Read More

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http://dx.doi.org/10.1302/0301-620X.102B2.BJJ-2019-0949.R1DOI Listing
February 2020

[Challenges to endoprosthetic reconstruction after tumor resection around the knee : Management of intra- and postoperative complications].

Orthopade 2020 Feb;49(2):114-122

Zentrum für Muskuloskeletale Tumormedizin - Vivantes Sarkomzentrum im Department für Bewegungschirurgie, Vivantes Klinikum Spandau, Neue Bergstraße 6, 13585, Berlin, Deutschland.

Background: The good functional outcomes of endoprosthetic knee reconstructions combined with modern oncosurgical concepts have resulted in a decreased rate of primary amputations following tumor resection in the region of the knee, thereby improving the quality of life of affected patients.

Objective: This study aimed to reappraise complications which are more common than in conventional arthroplasties performed for arthritis or trauma due to the complexity of the surgical procedures, the size of the endoprosthetic reconstructions, and neo-/adjuvant therapies.

Material And Methods: Possible intra- and postoperative complications and treatment options are presented. Read More

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http://dx.doi.org/10.1007/s00132-019-03853-zDOI Listing
February 2020

Using Time-Frequency Analysis to Characterize Altered Knee Dynamics in Post ACL Reconstruction Individuals.

Authors:
Kristin D Morgan

Conf Proc IEEE Eng Med Biol Soc 2019 07;2019:2132-2135

More than 250,000 individuals suffer an anterior cruciate ligament (ACL) injury in the United States each year requiring surgery and rehabilitation. However, despite exhaustive rehabilitation individuals are often plagued by neuromuscular deficits that lead to detrimental knee loading and knee osteoarthritis. Traditionally, time domain-based metrics like peak sagittal plane knee angle are used to quantify differences in knee mechanics; however, additional information can potentially be elucidated from time-frequency analyses. Read More

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http://dx.doi.org/10.1109/EMBC.2019.8856951DOI Listing

Response to the commentary on "Comparison of adductor canal block with local infiltration analgesia in primary total knee arthroplasty: A meta-analysis of randomized controlled trials" (Int J Surg 2019; Epub ahead of print).

Authors:
Qin Xu Xuefang Zhao

Int J Surg 2020 02 9;74:120-122. Epub 2020 Jan 9.

Department of Anesthesiology, Weifang People's Hospital, No. 151 Guangwen Street, 261000, Weifang, China. Electronic address:

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http://dx.doi.org/10.1016/j.ijsu.2020.01.001DOI Listing
February 2020

Do spacer blocks accurately estimate deformity correction and gap balance in total knee arthroplasty? A prospective study with computer navigation.

Knee 2020 Jan 7;27(1):214-220. Epub 2020 Jan 7.

Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA.

Background: Spacer blocks are used commonly in knee arthroplasty to estimate gaps and ligament balance. Their use continues along with modern technology despite dearth of literature regarding their accuracy and reliability. This prospective study aims to determine the difference in values of gap and balance measurements between spacers and trials in computer assisted TKA. Read More

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http://dx.doi.org/10.1016/j.knee.2019.09.006DOI Listing
January 2020

Larger free flap size is associated with increased complications in lower extremity trauma reconstruction.

Microsurgery 2020 May 8;40(4):473-478. Epub 2020 Jan 8.

Hansjörg Wyss Department of Plastic Surgery, NYU Langone Health, New York, New York.

Background: Free flap reconstruction after lower extremity trauma remains challenging with various factors affecting overall success. Increasing defect and flap size have been demonstrated to be a surrogate for overall injury severity and correlated with complications. In addition, larger free flaps that encompass more tissue theoretically possess high metabolic demand, and may be more susceptible to ischemic insult. Read More

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http://dx.doi.org/10.1002/micr.30556DOI Listing

Modified Capanna's Technique (Vascularized Free Fibula Combined with Allograft) as a Single-Stage Procedure in Post-traumatic Long-Segment Defects of the Lower End of the Femur: Outcome Analysis of a Series of 19 Patients with an Average Gap of 14 cm.

Indian J Plast Surg 2019 Sep 26;52(3):296-303. Epub 2019 Dec 26.

Department of Orthopaedics & Trauma, Ganga Medical Centre and Hospitals, Coimbatore, Tamil Nadu, India.

 Salvage and reconstruction of posttraumatic defects of the long bone are complex due to the multiple procedures involved and increased chances of poor outcomes. We present the outcomes of the modified Capanna's technique-a reliable single-stage procedure of combining allograft and free vascularized fibular graft-in treating large posttraumatic bone defects in the distal third of the femur.  This is a retrospective analysis. Read More

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http://dx.doi.org/10.1055/s-0039-3400672DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6938445PMC
September 2019

How Accurate Are the Surgical Risk Preoperative Assessment System (SURPAS) Universal Calculators in Total Joint Arthroplasty?

Clin Orthop Relat Res 2020 02;478(2):241-251

A. W. Trickey, Q. Ding, A. H. S. Harris, Stanford-Surgery Policy Improvement Research and Education Center (S-SPIRE), Department of Surgery, Stanford University School of Medicine, Stanford, CA, USA A. H. S. Harris, Center for Innovation to Implementation, VA Palo Alto Healthcare System, Palo Alto, CA, USA.

Background: Surgical outcome prediction models are useful for many purposes, including informed consent, shared decision making, preoperative mitigation of modifiable risk, and risk-adjusted quality measures. The recently reported Surgical Risk Preoperative Assessment System (SURPAS) universal risk calculators were developed using 2005-2012 American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP), and they demonstrated excellent overall and specialty-specific performance. However, surgeons must assess whether universal calculators are accurate for the small subset of procedures they perform. Read More

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http://dx.doi.org/10.1097/CORR.0000000000001078DOI Listing
February 2020
2.765 Impact Factor

Comparison of Neuromuscular Firing Patterns of the Superficial Quadriceps in Soft Tissue Quadriceps Tendon Versus Bone-Patellar Tendon-Bone ACL Autografts.

Orthop J Sports Med 2019 Dec 17;7(12):2325967119887674. Epub 2019 Dec 17.

University of Miami Sports Medicine Institute, Coral Gables, Florida, USA.

Background: Soft tissue quadriceps tendon (QT) autografts are increasingly popular as a primary graft choice for anterior cruciate ligament reconstruction (ACLR), but no study has compared superficial quadriceps activity levels and leg extension strength for QT versus bone-patellar tendon-bone (BTB) autografts.

Hypothesis: Harvesting the central portion of the QT will alter rectus femoris (RF) firing patterns during maximum voluntary isometric contraction.

Study Design: Cohort study; Level of evidence, 3. Read More

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http://dx.doi.org/10.1177/2325967119887674DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6918040PMC
December 2019

Letter to the editor on "Comparison of adductor canal block with local infiltration analgesia in primary total knee arthroplasty: A meta-analysis of randomized controlled trials" [(Int J Surg 2019; 69:89-97) and on the letter to the editor (Int J Surg 2019; Epub ahead of print)].

Int J Surg 2020 02 28;74:41-43. Epub 2019 Dec 28.

Department of Anesthesiology, The Affiliated Zhongshan Hospital of Dalian University, Liaoning Province, 116001, China. Electronic address:

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http://dx.doi.org/10.1016/j.ijsu.2019.12.025DOI Listing
February 2020

Reply to a commentary on "Continuous adductor canal block is a better choice compared to single shot after primary total knee arthroplasty: A meta-analysis of randomized controlled trials" [Int J Surg. 2019 Nov 18; 72:192-193].

Int J Surg 2020 02 27;74:65-67. Epub 2019 Dec 27.

Department of Infectious Diseases, Weifang People's Hospital, Weifang, Shandong, 261000, China. Electronic address:

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http://dx.doi.org/10.1016/j.ijsu.2019.12.014DOI Listing
February 2020

A Step in the Right Direction: Body Location Determines Activity Tracking Device Accuracy in Total Knee and Hip Arthroplasty Patients.

J Am Acad Orthop Surg 2020 Jan;28(2):e77-e85

From Rothman Institute, Thomas Jefferson University, Philadelphia, PA (Dr. Goel, Mr. Petrera, Mr. Blevins, Dr. Purtill), the Department of Orthopaedic Surgery, Northwell Health, Manhasset, NY (Dr. Danoff), and the Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA (Dr. Chen).

Introduction: Step counts measured by activity monitoring devices (AMDs) and smartphones (SPs) can objectively measure a patient's activity levels after total hip and knee arthroplasty (total joint arthroplasty [TJA]). This study investigated the use and optimal body location of AMDs and SPs to measure step counts in the postoperative period.

Methods: This was a two-armed, prospective, observational study of TJA inpatients (n = 24) and 2-week status after TJA (n = 25) completing a 100-ft walk. Read More

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http://dx.doi.org/10.5435/JAAOS-D-18-00319DOI Listing
January 2020

Monitoring changes in knee surface morphology after anterior cruciate ligament reconstruction surgery using 3Dsurface scanning.

Knee 2020 Jan 26;27(1):207-213. Epub 2019 Dec 26.

Department of Orthopaedics and Sports Medicine, University of Washington Medical Center, Seattle, WA, United States of America.

Study Design: Prospective case series.

Background: After surgical reconstruction of the anterior cruciate ligament, recovery to pre-injury levels of knee function is challenging. Postoperative edema and muscle atrophy are common roadblocks to full function and are evident in changes to the surface morphology of the knee. Read More

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http://dx.doi.org/10.1016/j.knee.2019.10.004DOI Listing
January 2020

Reliability of stress radiography in the assessment of coronal laxity following total knee arthroplasty.

Knee 2020 Jan 23;27(1):221-228. Epub 2019 Dec 23.

Orthopaedic Research Unit, Aalborg University Hospital, Aalborg, Denmark; Department of Clinical Medicine, Aalborg University, Aalborg, Denmark.

Background: Stress radiography is used in the valuation of soft tissue laxity following total knee arthroplasty (TKA). However, reliability and agreement is largely unknown.

Methods: In this prospective reliability study, we included 15 participants with prior TKA. Read More

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http://dx.doi.org/10.1016/j.knee.2019.09.013DOI Listing
January 2020

[Curative effect analysis of ipsilateral total knee and hip arthroplasty at stage I].

Zhongguo Gu Shang 2019 Nov;32(11):1066-1071

Department of Orthopaedics, the Second Affiliated Hospital of Lanzhou University, Lanzhou 730030, Gansu, China;

Objective: To explore clinical results of ipsilateral total knee and hip arthroplasty at stage I for the treatment of ipsilateral hip and knee diseases.

Methods: From January 2008 to September 2016, 7 patients with ipsilateral knee and hip disease were treated by simultaneous total knee and hip arthroplasty at stage I, including 4 males and 3 females aged from 47 to 68 years old, the courses of disease ranged from 6 to 29 years; 3 patients with rheumatoid arthritis, 3 patients with ankylosing spondylitis, and 1 patient with senile hip and knee arthritis. Operation time, intraoperative blood loss and local wounds during hospitalization were observed and recorded, and Harris hip score and HSS knee score were used to evaluate therapeutic effects. Read More

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http://dx.doi.org/10.3969/j.issn.1003-0034.2019.11.018DOI Listing
November 2019

Comparison of adductor canal block with periarticular infiltration analgesia in total knee arthroplasty: A meta-analysis of randomized controlled trials.

Medicine (Baltimore) 2019 Dec;98(50):e18356

Department of Orthopaedics, Xiaoshan Traditional Chinese Medical Hospital.

Background: Total knee arthroplasty (TKA) is accompanied by moderate to severe postoperative pain. Multimodal analgesia, such as femoral nerve block, periarticular infiltration analgesia (PIA), and patient-controlled intravenous analgesia, have been used for postoperative analgesia. Recently, randomized controlled trials have compared the efficacy of the adductor canal block (ACB) and the PIA in patients undergoing TKA. Read More

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http://dx.doi.org/10.1097/MD.0000000000018356DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6922493PMC
December 2019

[Lower limb postoperative analgesia evolution : Time for sensitive blocks].

Authors:
P Laurent J C Cres

Rev Med Liege 2019 Dec;74(12):662-666

Service d'Anesthésie, Centre Hospitalier du Bois de l'Abbaye, Seraing, Belgique.

For about twenty years, peripheral nervous blocks have become the gold standard in postoperative analgesia for knee and foot surgery. The development of echography adapted to anesthesia gave anesthesiologists the opportunity to perform distal, mostly sensitive nerve blocks. Proximal nervous blocks associated analgesia used to be better than general (intravenous or oral) analgesia. Read More

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December 2019

Patient-specific instrumentation improved three-dimensional accuracy in total knee arthroplasty: a comparative radiographic analysis of 1257 total knee arthroplasties.

J Orthop Surg Res 2019 Dec 12;14(1):437. Epub 2019 Dec 12.

Vienna Shoulder & Sports Clinic, Vienna, Austria.

Background: The purpose of this study was to compare restoration of mechanical limb alignment and three-dimensional component-positioning between conventional and patient-specific instrumentation in total knee arthroplasty.

Methods: Radiographic data of patients undergoing mobile-bearing total knee arthroplasty (n = 1257), using either conventional (n = 442) or patient-specific instrumentation (n = 812), were analyzed. To evaluate accuracy of axis restoration and 3D-component-positioning between conventional and patient-specific instrumentation, absolute deviations from the targeted neutral mechanical limb alignment and planned implant positions were determined. Read More

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http://dx.doi.org/10.1186/s13018-019-1465-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6909617PMC
December 2019