90,016 results match your criteria Knee Joint


The efficacy of a drug holiday test on two-stage revision for infected total knee arthroplasty.

J Chin Med Assoc 2019 Mar 11. Epub 2019 Mar 11.

Department of Orthopedics and Traumatology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC.

Background: We compared the clinical efficacy of normal C-reactive protein (CRP) expression (< 1.0 mg/dL), with a two-week drug holiday test (DHT) and without (DHT) as a reimplantation criterion, based on subsequent infections after a two-stage revision of a total knee arthroplasty of a periprosthetic joint infection (PJI).

Methods: A 10-year review of 58 patients (mean age: 73. Read More

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http://dx.doi.org/10.1097/JCMA.0000000000000055DOI Listing

Erratum: What's New in Adult Reconstructive Knee Surgery.

Authors:

J Bone Joint Surg Am 2019 Mar;101(6):e26

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http://dx.doi.org/10.2106/JBJS.ER.18.01157DOI Listing

A Novel Risk Calculator Predicts 90-Day Readmission Following Total Joint Arthroplasty.

J Bone Joint Surg Am 2019 Mar;101(6):547-556

Department of Orthopaedic Surgery (D.E.G., S.P.R., D.E.A., M.P.B., and T.M.S.), Department of Anesthesiology (T.J.H.), and Performance Services (C.B.H.), Duke University Medical Center, Durham, North Carolina.

Background: A reliable prediction tool for 90-day adverse events not only would provide patients with valuable estimates of their individual risk perioperatively, but would also give health-care systems a method to enable them to anticipate and potentially mitigate postoperative complications. Predictive accuracy, however, has been challenging to achieve. We hypothesized that a broad range of patient and procedure characteristics could adequately predict 90-day readmission after total joint arthroplasty (TJA). Read More

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http://dx.doi.org/10.2106/JBJS.18.00843DOI Listing

Venous Thromboembolism and Bleeding Adverse Events in Lower Leg, Ankle, and Foot Orthopaedic Surgery with and without Anticoagulants.

J Bone Joint Surg Am 2019 Mar;101(6):539-546

Department of Orthopaedic Surgery, Massachusetts General Hospital, Newton-Wellesley Hospital, Harvard Medical School, Boston, Massachusetts.

Background: Currently, there is insufficient knowledge about the benefits of anticoagulant use for primary prevention of venous thromboembolism (VTE) and its inherent risk of bleeding adverse events in patients undergoing surgery distal to the knee.

Methods: The study included patients who had undergone an orthopaedic procedure distal to the tibial articular surface when they were 18 years of age or older. Using retrospective information from a tertiary care referral center, we compared patient demographics, clinical findings, diagnostic reports, procedures performed, and the rate of symptomatic VTE and bleeding adverse events between patients who had and those who had not received anticoagulant prophylaxis. Read More

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http://dx.doi.org/10.2106/JBJS.18.00346DOI Listing

Revisiting the International Normalized Ratio (INR) Threshold for Complications in Primary Total Knee Arthroplasty: An Analysis of 21,239 Cases.

J Bone Joint Surg Am 2019 Mar;101(6):514-522

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

Background: Consensus guidelines recommend use of the international normalized ratio (INR) to predict the risk of perioperative bleeding in orthopaedic surgery. However, current recommendations for targeting an INR of <1.5 are based on studies across all surgical disciplines. Read More

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http://dx.doi.org/10.2106/JBJS.18.00771DOI Listing

Where has the 'bio' in bio-psycho-social gone?

Curr Opin Support Palliat Care 2019 Mar 18. Epub 2019 Mar 18.

Integrative Spinal Research Group, Department of Chiropractic Medicine, University Hospital Balgrist and University of Zurich, Zurich, Switzerland.

Purpose Of Review: Current definitions of pain do not necessitate tissue damage. This is important because it does justice to the pain patient in whom a nociceptive source is not detectable. However, in conjunction with exciting findings regarding supraspinal pain modulation and a (perceived) failure of identifying nociceptive sources in individual patients, this might have led to a devaluation of the role of nociception for chronic pain. Read More

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http://dx.doi.org/10.1097/SPC.0000000000000420DOI Listing

Calcium pyrophosphate deposition disease after total knee arthroplasty: Comparison with periprosthetic joint infection.

J Orthop 2019 Mar-Apr;16(2):128-132. Epub 2019 Feb 27.

Department of Orthopaedic Surgery, Japan Community Healthcare Organization, Kyushu Hospital, Fukuoka, Japan.

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http://dx.doi.org/10.1016/j.jor.2019.02.004DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6403412PMC
February 2019

Joint unloading inhibits articular cartilage degeneration in knee joints of a monosodium iodoacetate-induced rat model of osteoarthritis.

Osteoarthritis Cartilage 2019 Mar 16. Epub 2019 Mar 16.

Division of Health Sciences, Graduate School of Medical Science, Kanazawa University, Ishikawa, Japan. Electronic address:

Objective: The aim of the study was to examine how mechanical unloading affects articular cartilage degeneration in the patellofemoral (PF) and tibiofemoral (TF) joints of a monosodium iodoacetate (MIA)-induced rat model of osteoarthritis (OA).

Design: The study involved 60 male rats. Osteoarthritis was induced by intra-articular injecting MIA into both knee joints. Read More

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http://dx.doi.org/10.1016/j.joca.2019.03.001DOI Listing

Restrictive Opioid Prescribing Protocols Following Total Hip Arthroplasty and Total Knee Arthroplasty Are Safe and Effective.

J Arthroplasty 2019 Feb 20. Epub 2019 Feb 20.

Department of Orthopedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, IA.

Background: Orthopedic surgeons may overprescribe opioids postoperatively. Literature examining opioid prescribing guidelines following total joint arthroplasty (TJA) is limited.

Methods: Retrospective review was conducted of primary TJAs from June 2017 to February 2018, with 3-month follow-up. Read More

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http://dx.doi.org/10.1016/j.arth.2019.02.022DOI Listing
February 2019

Relationship Between Ligament Forces and Contact Forces in Balancing at Total Knee Surgery.

J Arthroplasty 2019 Feb 18. Epub 2019 Feb 18.

Department of Orthopedic Surgery, NYU Langone Orthopedic Hospital, New York, NY; Department of Mechanical and Aerospace Engineering, NYU Tandon School of Engineering, Brooklyn, NY.

Background: Spacer blocks, tensors, or instrumented tibial trials are current methods of balancing the knee during surgery but there are no current techniques for measuring ligament forces. Our goal was to study the relationship between the collateral ligament forces and the condylar contact forces to determine whether there was equivalence.

Methods: A test rig was constructed modeling an artificial knee joint with collateral ligaments. Read More

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http://dx.doi.org/10.1016/j.arth.2019.02.016DOI Listing
February 2019
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Kinetic [18F]-Fluoride of the Knee in Normal Volunteers.

Clin Nucl Med 2019 Mar 15. Epub 2019 Mar 15.

Department of Radiology, Stanford University, Stanford, CA.

Purpose: [F]-sodium fluoride ([F]NaF) is a well-established bone-seeking agent that has shown promise to assess bone turnover in a variety of disorders, but its distribution in healthy knee joints has not been explored. This study aimed to investigate parametric values for [F]NaF uptake in various bone tissues types of the knee and their spatial distributions.

Methods: Twelve healthy subjects were hand-injected with 92. Read More

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http://dx.doi.org/10.1097/RLU.0000000000002533DOI Listing

Robotic-Assisted Total Knee Arthroplasty in the Presence of Extra-Articular Deformity.

Surg Technol Int 2019 Mar 18;34. Epub 2019 Mar 18.

Department of Orthopaedic Surgery, Lenox Hill Hospital, Northwell Health, New York, New York.

Introduction: Tibial or femoral extra-articular deformities complicate the goal achieving optimal mechanical axis alignment for successful total knee arthroplasty (TKA) outcomes. In the presence of these extra-articular deformities, standard operative techniques and instruments may not be reliable. Robotic-arm assisted technology was developed to help achieve a well-aligned and balanced knee in a variety of clinical scenarios. Read More

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Three-phase Technetium-99m bone scanning in patients with pain in the knee region after cemented total knee arthroplasty.

Eur J Orthop Surg Traumatol 2019 Mar 19. Epub 2019 Mar 19.

Princess Elizabeth Orthopaedic Centre, Royal Devon and Exeter Foundation Trust, Barrack Road, Exeter, EX2 5DW, UK.

Introduction: Our aim was to question the usefulness of a three-phase bone scan in the evaluation of pain in the knee region after TKR. Our hypothesis was that an abnormal investigation had a poor association with the presence of infection or loosening, and did not provide any additional diagnostic information above that already available through other standard investigations.

Methods: A retrospective study over a 24-month period was performed comprising 118 patients investigated with a TPBS. Read More

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http://dx.doi.org/10.1007/s00590-019-02407-5DOI Listing

Arthroscopic all-inside ATiFL's distal fascicle transfer for ATFL's superior fascicle reconstruction or biological augmentation of lateral ligament repair.

Knee Surg Sports Traumatol Arthrosc 2019 Mar 19. Epub 2019 Mar 19.

Laboratory of Arthroscopic and Surgical Anatomy, Department of Pathology and Experimental Therapeutics (Human Anatomy Unit), University of Barcelona, Barcelona, Spain.

Purpose: Tendon grafts are often utilized for reconstruction of the lateral ligaments unamenable to primary repair. However, tendon and ligaments have different biological roles. The anterior tibiofibular ligament's (ATiFL) distal fascicle may be resected without compromising the stability of the ankle joint. Read More

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http://dx.doi.org/10.1007/s00167-019-05460-zDOI Listing

Cruciate ligament healing and injury prevention in the age of regenerative medicine and technostress: homeostasis revisited.

Knee Surg Sports Traumatol Arthrosc 2019 Mar 19. Epub 2019 Mar 19.

Division of Sports Medicine, Department of Orthopaedic Surgery, University of Louisville, 550 S. Jackson St., 1st Floor ACB, Louisville, KY, 40202, USA.

Purpose: This clinical concepts paper discusses the essential elements of cruciate ligament recuperation, micro-trauma repair, and remodeling.

Methods: Cruciate ligament mechanobiology and tissue heterogeneity, anatomy and vascularity, and synovial membrane and fluid functions are discussed in relationship to deficiency-induced inflammatory responses, nervous and immune system function, recuperation, repair and remodeling, and modern threats to homeostasis.

Results: Cruciate ligament surgical procedures do not appreciate the vital linked functions of the central, peripheral, and autonomic nervous systems and immune system function on knee ligament injury recuperation, micro-trauma repair, and remodeling. Read More

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http://dx.doi.org/10.1007/s00167-019-05458-7DOI Listing

Surface analysis of sheep menisci after meniscectomy via infrared attenuated total reflection spectroscopy.

J Biophotonics 2019 Mar 19:e201800429. Epub 2019 Mar 19.

Ulm University, Institute for Analytical and Bioanalytical Chemistry, Ulm, Germany.

Menisci are very important fibrocartilaginous tissue, which maintain biomechanical functions and physiological stabilization of knee joint. Meniscectomy is known as a surgery to recover partial functions from acute meniscus tears. However, the late consequences of total or partial meniscectomy include signs of osteoarthritis and even ligament instability. Read More

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http://dx.doi.org/10.1002/jbio.201800429DOI Listing

Modular tumor prostheses: are current stem designs suitable for distal femoral reconstruction? A biomechanical implant stability analysis in Sawbones.

Arch Orthop Trauma Surg 2019 Mar 18. Epub 2019 Mar 18.

Department of Orthopaedics and Orthopaedic Surgery, University Hospital Giessen and Marburg (UKGM), Klinikstrasse 33, 35392, Giessen, Germany.

Introduction: High loosening rates after distal femoral replacement may be due to implant design not adapted to specific anatomic and biomechanical conditions.

Materials And Methods: A modular tumor system (MUTARS, Implantcast GmbH) was implanted with either a curved hexagonal or a straight tapered stems in eight Sawbones in two consecutively generated bone defect (10 cm and 20 cm proximal to knee joint level). Implant-bone-interface micromotions were measured to analyze main fixation areas and to characterize the fixation pattern. Read More

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http://dx.doi.org/10.1007/s00402-019-03158-yDOI Listing

Negative impact of prior debridement on functional outcome of subsequent two-stage revision for early knee periprosthetic infection.

Knee Surg Sports Traumatol Arthrosc 2019 Mar 18. Epub 2019 Mar 18.

Department of Traumatology and Orthopaedics, Miguel Hernandez University, Elche, Alicante, Spain.

Purpose: To compare the functional outcome of two-stage revision (2SR) in patients without a prior debridement, antibiotics and implant retention with those patients who underwent 2SR after a failed debridement, antibiotics and implant retention for early periprosthetic joint infection following total knee arthroplasty (TKA). Negative impact of prior failed debridement, antibiotics and implant retention on the functional outcome of subsequent 2SR was hypothesized.

Methods: Case-control study of 49 patients initially treated with 2SR (group A) and 43 treated with 2SR after a prior failed debridement, antibiotics and implant retention (group B). Read More

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http://link.springer.com/10.1007/s00167-019-05476-5
Publisher Site
http://dx.doi.org/10.1007/s00167-019-05476-5DOI Listing
March 2019
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Living with osteoarthritis is a balancing act: an exploration of patients' beliefs about knee pain.

BMC Rheumatol 2018 12;2:15. Epub 2018 Jun 12.

5Department of Surgical Sciences, University of Otago, Dunedin, New Zealand.

Background: This study aimed to explore the beliefs of people with knee osteoarthritis (OA) about the disease, and how these beliefs had formed and what impact these beliefs had on activity participation, health behaviour, and self-management.

Methods: Semi-structured interviews were conducted with 13 people with knee OA recruited from general practices, community physiotherapy clinics, and public advertisements in two provinces of New Zealand. Data were analysed using Interpretive Description. Read More

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http://dx.doi.org/10.1186/s41927-018-0023-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6390552PMC

Association Between Bone Marrow Lesions, Chondral Lesions, and Pain in Patients Without Radiographic Evidence of Degenerative Joint Disease Who Underwent Arthroscopic Partial Meniscectomy.

Orthop J Sports Med 2019 Mar 12;7(3):2325967119830381. Epub 2019 Mar 12.

Department of Orthopaedics, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, New York, USA.

Background: Bone marrow lesions (BMLs) have been found on magnetic resonance imaging in patients with meniscal tears.

Purpose: We sought to determine the prevalence and location of BMLs, the association between BMLs and chondral lesions, and the association between BMLs and pain in patients without radiographic evidence of degenerative joint disease who underwent arthroscopic partial meniscectomy (APM).

Study Design: Cohort study; Level of evidence, 2. Read More

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http://dx.doi.org/10.1177/2325967119830381DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6415484PMC

infection of an arthritic knee.

JMM Case Rep 2019 Feb 29;6(2):e005173. Epub 2019 Jan 29.

Aurora Health Care, Milwaukee, WI 53215, USA.

Introduction: Osteoarthritis (OA) is a common cause of knee pain in older adults. OA is primarily caused by deterioration of cartilage in the knee, which decreases the ability of synovial fluid to absorb shock and increases the opportunity for bones of the joint to rub together. Hylan G-F 20 (Synvisc-One) is a compound that can be injected directly into the knee to help combat the pain associated with OA by lubricating and cushioning the joint. Read More

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http://dx.doi.org/10.1099/jmmcr.0.005173DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6421341PMC
February 2019

Does anterolateral ligament rupture affect functional outcomes in patients who underwent an anterior cruciate ligament reconstruction?

Int J Surg 2019 Mar 15. Epub 2019 Mar 15.

Tekirdag Namik Kemal University Medical Faculty, Orthopaedics and Traumatology Department, Turkey. Electronic address:

Background: Studies have shown that the anterolateral ligament contributes to knee stability. This study aims to compare the results of postoperative physical examinations, knee joint stability tests, and functional assessment tests of patients with intact anterolateral (AL) ligaments and patients with ruptured anterolateral (AL) ligaments.

Material And Method: This study consisted of 101 patients, with at least a 12-month follow-up period, who underwent an anterior cruciate ligament reconstruction between 2010 and 2016, and whose AL ligaments were evaluated by the radiologist with the preoperative and postoperative magnetic resonance images (MRI). Read More

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http://dx.doi.org/10.1016/j.ijsu.2019.03.010DOI Listing

Joint-preserving tumour resection around the knee with allograft reconstruction using three-dimensional preoperative planning and patient-specific instruments.

Knee 2019 Mar 15. Epub 2019 Mar 15.

Balgrist University Hospital, Department of Orthopaedics, University of Zurich, Forchstrasse 340, 8008 Zurich, Switzerland.

Background: The region around the knee joint is a common location of malignant bone tumours. Limb salvage procedures, whenever possible, are preferred to amputation. Allograft reconstruction is an accepted procedure to restore large bone defects. Read More

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http://dx.doi.org/10.1016/j.knee.2019.02.015DOI Listing

Design and biomechanical characteristics of porous meniscal implant structures using triply periodic minimal surfaces.

J Transl Med 2019 Mar 18;17(1):89. Epub 2019 Mar 18.

State Key Laboratory of Pharmaceutical Biotechnology, Department of Sports Medicine and Adult Reconstructive Surgery, Drum Tower Hospital Affiliated to Medical School of Nanjing University, Nanjing, China.

Background: Artificial meniscal implants can be used to replace a severely injured meniscus after meniscectomy and restore the normal functionality of a knee joint. The aim of this paper was to design porous meniscal implants and assess their biomechanical properties.

Methods: Finite element simulations were conducted on eight different cases including intact healthy knees, knee joints with solid meniscal implants, and knee joints with meniscal implants with two types of triply periodic minimal surfaces. Read More

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http://dx.doi.org/10.1186/s12967-019-1834-2DOI Listing

Anterior cruciate ligament transection alters the n-3/n-6 fatty acid balance in the lapine infrapatellar fat pad.

Lipids Health Dis 2019 Mar 18;18(1):67. Epub 2019 Mar 18.

Institute of Biomedicine/Anatomy, School of Medicine, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland.

Background: The infrapatellar fat pad (IFP) of the knee joint has received lots of attention recently due to its emerging role in the pathogenesis of osteoarthritis (OA), where it displays an inflammatory phenotype. The aim of the present study was to examine the infrapatellar fatty acid (FA) composition in a rabbit (Oryctolagus cuniculus) model of early OA created by anterior cruciate ligament transection (ACLT).

Methods: OA was induced randomly in the left or right knee joint of skeletally mature New Zealand White rabbits by ACLT, while the contralateral knee was left intact. Read More

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http://dx.doi.org/10.1186/s12944-019-1008-5DOI Listing

Efficacy of platelet-rich plasma in arthroscopic repair for discoid lateral meniscus tears.

BMC Musculoskelet Disord 2019 Mar 18;20(1):113. Epub 2019 Mar 18.

Department of Orthopedic Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Road, Guangzhou, 510515, China.

Background: To evaluate the clinical results of arthroscopic repair with or without platelet-rich plasma (PRP) for tears of the discoid lateral meniscus (DLM).

Methods: Twenty-nine patients with DLM tears within a stable knee were arthroscopically treated with meniscal suture repair. Of those, 14 were augmented with platelet-rich plasma (PRP), and 15 were performed without PRP augmentation. Read More

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http://dx.doi.org/10.1186/s12891-019-2500-9DOI Listing

Large intra-articular true lipoma of the knee.

BMC Musculoskelet Disord 2019 Mar 18;20(1):110. Epub 2019 Mar 18.

Chief of Orthoapedic Surgery and Traumatology Department, Complejo Hospitalario Integral Privado, Avda. Carlos Haya 121, CP: 29010, Málaga, Spain.

Background: Intra-articular lipomas are rare and very few cases have been reported in the knee. To the best of our knowledge, here we report the largest lipoma to have ever been observed in the knee. It is crucial to avoid the misdiagnose of lipoma arborescens, which is associated with degenerative joint disease. Read More

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http://dx.doi.org/10.1186/s12891-019-2484-5DOI Listing

Suprapatellar approach for fractures of the tibia: Does the fracture level matter?

Eklem Hastalik Cerrahisi 2019 Apr;30(1):10-6

Department of Orthopedics and Traumatology, Sakarya University Training and Research Hospital, 54100 Adapazarı, Sakarya, Turkey.

Objectives: This study aims to evaluate proximal, shaft, and distal tibial fractures treated with suprapatellar (SP) tibial intramedullary nailing (IMN) in terms of alignment, healing, and patellofemoral (PF) pain.

Patients And Methods: The study included 58 patients (41 males, 17 females; mean age 42.9 years; range, 18 to 75 years) treated via the SP approach in semiextention. Read More

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http://dx.doi.org/10.5606/ehc.2019.63487DOI Listing

Clinical and radiological outcomes following isolated vertical medial meniscal tear repair in patients over 40 years old.

J Orthop Surg (Hong Kong) 2019 May-Aug;27(2):2309499019836300

1 Department of Orthopaedics and Traumatology, Health Sciences University, Baltalimani Bone Diseases Education and Research Hospital, Istanbul, Turkey.

Purpose:: To evaluate the short-term clinical and radiological outcomes with degenerative changes in patients over 40 years old following isolated vertical medial meniscal tear repair.

Methods:: Between 2007 and 2015, 438 patients underwent arthroscopic meniscal repair. Thirty-three patients aged over 40 years with isolated vertical medial meniscal repair (23 males and 10 females, mean age 46. Read More

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http://dx.doi.org/10.1177/2309499019836300DOI Listing

[Diagnosis and therapy of popliteal cyst].

Zhongguo Gu Shang 2019 Feb;32(2):181-185

Department of Orthopaedics, the Second Hospital of Shanxi Medical University, Taiyuan 030001, Shanxi, China;

Popliteal cyst is a common peri-knee cyst, also known as a Baker's cyst. With the current development of popliteal cysts, the pathogenesis is mainly due to increased pressure in the knee joint caused by various reasons, leading to a fluid-filled sac that can form behind the knee as a result of enlargement of the gastrocnemius-semimembranosus bursa. The current diagnostic methods include X-ray computed, ultrasound, and magnetic resonance. Read More

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http://dx.doi.org/10.3969/j.issn.1003-0034.2019.02.018DOI Listing
February 2019

[Arthroscopic for the treatment of synovial hemangioma in knee joint: a case report].

Zhongguo Gu Shang 2019 Feb;32(2):173-175

Department of Sports Medicine, the First Hospital of Jilin University, Changchun 130021, Jilin, China.

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http://dx.doi.org/10.3969/j.issn.1003-0034.2019.02.016DOI Listing
February 2019

[Comparison of the efficacy of total arthroscopy and traditional surgical treatment for the treatment of popliteal cyst].

Zhongguo Gu Shang 2019 Feb;32(2):151-155

Department of Orthopaedics, the Second Affiliated Hospital of Bengbu Medical College, Bengbu 233000, Anhui, China.

Objective: To compare the clinical efficacy of total arthroscopic surgery and traditional surgery for popliteal cyst.

Methods: From August 2014 to July 2017, 60 cases of popliteal cyst were treated with total arthroscopy or traditional surgery respectively. In total arthroscopy group, there were 30 patients including 7 males and 23 females with an average age of (55. Read More

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http://dx.doi.org/10.3969/j.issn.1003-0034.2019.02.011DOI Listing
February 2019

Lateral Parapatellar Approach Without Tibial Tubercle Osteotomy for Fixed Valgus Deformity Correction in Total Knee Arthroplasty.

JBJS Essent Surg Tech 2014 Dec 23;3(4):e20. Epub 2013 Oct 23.

KR Hospital, Periyanaickenpalayam, Mettupalayam Road, Coimbatore 641 020, India.

Introduction: The lateral parapatellar approach provides direct access to the pathological area in a valgus knee deformity and allows sequential titrated release of contracted lateral soft tissues during total knee arthroplasty.

Step 1 Preoperative Planning: Differentiate the flexible and fixed components of the valgus deformity by clinical and radiographic examination.

Step 2 Expansile Lateral Arthrotomy: Open the knee joint from the lateral side by coronal z-plasty of the lateral retinaculum, oblique lateral tenotomy of the quadriceps tendon, and iliotibial band release. Read More

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http://dx.doi.org/10.2106/JBJS.ST.M.00015DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6407958PMC
December 2014

3D-multi-spectral T mapping near metal implants.

Magn Reson Med 2019 Mar 18. Epub 2019 Mar 18.

Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin.

Purpose: Due to host-mediated adverse reaction to metallic debris, there is an increasing need for noninvasive assessment of the soft tissue surrounding large joint arthroplasties. Quantitative mapping can be beneficial for tissue characterization and early diagnosis of tissue pathology but current mapping techniques lack the capability to image near metal hardware. A novel multi-spectral mapping technique is proposed to address this unmet need. Read More

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http://dx.doi.org/10.1002/mrm.27744DOI Listing

Prospective Evaluation of the Patient Acceptable Symptom State to Identify Clinically Successful Anterior Cruciate Ligament Reconstruction.

Am J Sports Med 2019 Mar 18:363546519831008. Epub 2019 Mar 18.

Cleveland Clinic Orthopaedics Sports Health, Cleveland, Ohio, USA.

Background:: The length of most patient-reported outcome measures creates significant response burden, which hampers follow-up rates. The Patient Acceptable Symptom State (PASS) is a single-item, patient-reported outcome measure that asks patients to consider all aspects of life to determine whether the state of their joint is satisfactory; this measure may be viable for tracking outcomes on a large scale.

Hypothesis:: The PASS question would identify clinically successful anterior cruciate ligament reconstruction (ACLR) at 1-year follow-up with high sensitivity and moderate specificity. Read More

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http://dx.doi.org/10.1177/0363546519831008DOI Listing

Single-tunnel anatomic double-bundle anterior cruciate ligament reconstruction has the same effectiveness as double femoral, double tibial tunnel: A prospective randomized study.

Medicine (Baltimore) 2019 Mar;98(11):e14851

Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu.

Purpose: To investigate whether single femoral, single tibial tunnel anatomic double-bundle anterior cruciate ligament (ACL) reconstruction is equal to or superior to double femoral, double tibial tunnel ACL double-bundle anatomic reconstruction in terms of restoring the stability and functions of the knee joint.

Methods: A prospective clinical study was performed to compare 30 cases of single-tunnel ACL double-bundle anatomic reconstruction to 28 cases of double-tunnel ACL double-bundle anatomic reconstruction, with average follow-up of 36 months. All graft tendons were hamstring tendon autografts. Read More

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http://dx.doi.org/10.1097/MD.0000000000014851DOI Listing

Reliability, discriminant validity and sex comparisons of dynamic postural stability during a landing task designed to challenge transverse plane knee stability.

Sports Biomech 2019 Mar 18:1-13. Epub 2019 Mar 18.

c Sports Medicine Research Institute, College of Health Sciences , University of Kentucky , Lexington , KY , USA.

Internal and external rotational knee stability is essential for sports performance and excessive rotation can lead to injury but is rarely assessed in injury risk analysis. The objectives of this study were to determine the between-session reliability, discriminant validity and potential sex differences of a dynamic postural stability (DPS) assessment that challenges transverse plane knee stability. Thirty-six individuals (21. Read More

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http://dx.doi.org/10.1080/14763141.2019.1569119DOI Listing

The effect of landing type on kinematics and kinetics during single-leg landings.

Sports Biomech 2019 Mar 18:1-17. Epub 2019 Mar 18.

a College of Health, Biomechanics Laboratory , Ball State University , Muncie , IN , USA.

Landing research attempts to simulate sport activities; however, movements performed pre- or post-landing may alter landing mechanics and injury risk. Therefore, this study compared lower extremity biomechanics of single-leg drop landings, drop jump (DJ) and countermovement jump (CMJ) landings as well as sex-related differences. A total of 25 recreational athletes (11 females) performed landings from 80% maximum jump height with impact forces, kinematics and joint moments measured during each landing. Read More

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http://dx.doi.org/10.1080/14763141.2019.1582690DOI Listing

Comparison of 90-Day Complication Rates and Cost Between Single and Multiple Joint Procedures for End-Stage Arthropathy in Patients with Hemophilia.

JB JS Open Access 2018 Dec 23;3(4):e0026. Epub 2018 Oct 23.

Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Beijing, China.

Background: Multiple joint procedures during a single anesthetic episode have been proposed for patients with hemophilia as a way to reduce cost. The postoperative 90-day complication rate and the cost distribution between multiple joint procedures and single joint procedures for patients with hemophilia have not been well studied.

Methods: Between January 1996 and December 2016, 124 patients underwent 177 surgical procedures (total knee arthroplasty, total hip arthroplasty, and ankle arthrodesis) for the treatment of hemophilic end-stage arthropathy. Read More

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http://dx.doi.org/10.2106/JBJS.OA.18.00026DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6400505PMC
December 2018

Isometric Contraction of the Quadriceps Improves the Accuracy of Intra-Articular Injections into the Knee Joint via the Superolateral Approach.

JB JS Open Access 2018 Dec 23;3(4):e0003. Epub 2018 Oct 23.

Department of Orthopaedic Surgery, Nara Medical University, Kashihara, Japan.

Background: Intra-articular injection is an important technique for treating rheumatoid arthritis and osteoarthritis of the knee. However, medication is often inaccurately injected outside of the joint. We devised an intra-articular injection method in which the needle is inserted into the suprapatellar bursa while the patient maintains isometric contraction of the quadriceps. Read More

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http://dx.doi.org/10.2106/JBJS.OA.18.00003DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6400508PMC
December 2018

The Ewing Amputation: The First Human Implementation of the Agonist-Antagonist Myoneural Interface.

Plast Reconstr Surg Glob Open 2018 Nov 16;6(11):e1997. Epub 2018 Nov 16.

Massachusetts Institute of Technology, Center for Extreme Bionics, Cambridge, Mass.

Background: The agonist-antagonist myoneural interface (AMI) comprises a surgical construct and neural control architecture designed to serve as a bidirectional interface, capable of reflecting proprioceptive sensation of prosthetic joint position, speed, and torque from and advanced limb prosthesis onto the central nervous system. The AMI surgical procedure has previously been vetted in animal models; we here present the surgical results of its translation to human subjects.

Methods: Modified unilateral below knee amputations were performed in the elective setting in 3 human subjects between July 2016 and April 2017. Read More

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http://dx.doi.org/10.1097/GOX.0000000000001997DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6414116PMC
November 2018

Prosthetic Joint Infection Trends at a Dedicated Orthopaedics Specialty Hospital.

Adv Orthop 2019 10;2019:4629503. Epub 2019 Feb 10.

Emory University Department of Orthopaedics, Atlanta, GA, USA.

Introduction: Historically, a majority of prosthetic joint infections (PJIs) grew Gram-positive bacteria. While previous studies stratified PJI risk with specific organisms by patient comorbidities, we compared infection rates and microbiologic characteristics of PJIs by hospital setting: a dedicated orthopaedic hospital versus a general hospital serving multiple surgical specialties.

Methods: A retrospective review of prospectively collected data on 11,842 consecutive primary hip and knee arthroplasty patients was performed. Read More

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http://dx.doi.org/10.1155/2019/4629503DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6387727PMC
February 2019

Spinal Cord Glycine Transporter 2 Mediates Bilateral ST35 Acupoints Sensitization in Rats with Knee Osteoarthritis.

Evid Based Complement Alternat Med 2019 7;2019:7493286. Epub 2019 Feb 7.

Department of Anesthesiology and Perioperative Medicine, Xijing Hospital, the Fourth Military Medical University, Xi'an 710032, Shaanxi, China.

The concept of "acupoint sensitization" refers to the functional status of acupoint switches from silent to active under pathological conditions. In clinic, acupoint sensitization provides important guidance for acupoints selection in different diseases. However, the mechanism behind this phenomenon remains unclear. Read More

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http://dx.doi.org/10.1155/2019/7493286DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6383421PMC
February 2019

Prosthetic joint infection: A major threat to successful total joint arthroplasty.

Indian J Med Microbiol 2018 Oct-Dec;36(4):475-487

Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India.

Total joint arthroplasty (TJA) is one of the most common and reliable orthopaedic procedures that has significantly improved the quality of life of patients with degenerative joint diseases. Following the increase in the ageing population, availability of trained orthopaedic surgeons and advances in implantation procedures, demand for TJA both globally and in India is significantly increasing. Though TJA is one of the most cost-successful orthopaedic procedures, prosthetic joint infection (PJI) is one of the major complications of joint arthroplasty. Read More

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http://www.ijmm.org/text.asp?2018/36/4/475/254407
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http://dx.doi.org/10.4103/ijmm.IJMM_19_11DOI Listing
March 2019
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Management of stress fractures of the proximal tibia in patients with advance knee osteoarthritis. A case series.

Acta Orthop Belg 2018 Dec;84(4):436-442

To evaluate the outcome of one stage long stem total knee arthroplasty (TKA) of patients with stress fracture of the proximal tibia of the knee joint. Record of 15 patients, 14 females and one male who underwent one stage long stem TKAfrom the year January 2008 till December 2014 were reviewed retrospectively. Outcome variable was fracture healing which was seen clinically (pain free and postop ambulation) as well as radiologically (union of three out of four cortices). Read More

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December 2018

Metaphyseal cones and sleeves in revision total knee arthroplasty: Two sides of the same coin? Complications, clinical and radiological results-a systematic review of the literature.

Musculoskelet Surg 2019 Mar 16. Epub 2019 Mar 16.

Clinica Ortopedica - Ospedale Policlinico San Martino, Largo Rosanna Benzi 10, 16132, Genoa, GE, Italy.

Revision total knee arthroplasty (rTKA) is increasing of relevance in orthopaedic surgeon daily practice and this trend is likely to continue in the years ahead. The aim of this systematic review of English literature is to summarize and compare indications, complications, clinical and radiological results of metaphyseal cones and sleeves in management of bone loss in rTKA. Retrospective or prospective studies with at least 1 year of follow-up (FU) were included. Read More

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http://dx.doi.org/10.1007/s12306-019-00598-yDOI Listing

Gender-related morphological differences in sulcus angle and condylar height for the femoral trochlea using magnetic resonance imaging.

Knee Surg Sports Traumatol Arthrosc 2019 Mar 16. Epub 2019 Mar 16.

Department of Mechanical Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea.

Purpose: This study aimed to elucidate the primary differences in trochlear morphology between men and women utilizing three-dimensional magnetic resonance image reconstruction of the femoral trochlea.

Methods: Differences in anthropometric femoral trochlea data of 975 patients (825 women, 150 men) were evaluated. The following morphological parameters were measured at three flexion angles (15°, 30°, and 45°) of the femoral trochlea: the sulcus angle, condylar height, and the trochlear groove orientation and mediolateral groove position. Read More

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http://dx.doi.org/10.1007/s00167-019-05423-4DOI Listing
March 2019
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Treatment of osteochondral defects: chondrointegration of metal implants improves after hydroxyapatite coating.

Knee Surg Sports Traumatol Arthrosc 2019 Mar 16. Epub 2019 Mar 16.

Department of Learning, Informatics, Management and Ethics (LIME), Karolinska Institute, Stockholm, Sweden.

Purpose: The treatment of osteochondral defects in joint cartilage remains challenging due to its limited repair capacity. This study presents a metallic osteochondral plug with hydroxyapatite (HA)-coated cap edges for improved implant-tissue contact. The hypothesis was that improved attachment prevents from synovial fluid-influx and thereby avoids osteolysis and resulting implant instability. Read More

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http://dx.doi.org/10.1007/s00167-019-05484-5DOI Listing

Comparison between Operative and Non-Operative Treatment of the Medial Collateral Ligament: Histological and Ultrastructural Findings during Early Healing in the Epiligament Tissue in a Rat Knee Model.

Cells Tissues Organs 2019 Mar 15:1-17. Epub 2019 Mar 15.

Department of Anatomy, Histology and Embryology, Medical University of Sofia, Sofia, Bulgaria.

The medial collateral ligament of the knee joint is one of the most commonly injured ligaments of the knee. Recent data have shown that the thin layer of connective tissue covering the ligament, known as the epiligament, is essential for its nutrition and normal function, as well as its healing after injury. The aim of the present study was to investigate and compare the changes in the epiligament of the medial collateral ligament which occurred during operative and non-operative treatment throughout the first month after injury. Read More

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http://dx.doi.org/10.1159/000496985DOI Listing

Lipopolysaccharide-induced expression of astrocyte elevated gene-1 promotes degeneration and inflammation of chondrocytes via activation of nuclear factor-κB signaling.

Int Immunopharmacol 2019 Mar 14;71:84-92. Epub 2019 Mar 14.

Center for Translational Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China. Electronic address:

Osteoarthritis is an inflammatory disease characterized by joint degeneration and inflammation. Astrocyte elevated gene-1 (AEG-1) has been suggested as a novel inflammation-related factor in the pathological processes of various inflammatory diseases. To date, little is known about the role of AEG-1 in osteoarthritis. Read More

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http://dx.doi.org/10.1016/j.intimp.2019.03.006DOI Listing