1,194 results match your criteria Lateral Compartment Arthritis


Medial Unicompartmental Knee Arthroplasty with a Mobile-Bearing Implant.

JBJS Essent Surg Tech 2021 Apr-Jun;11(2). Epub 2021 Apr 19.

Department of Orthopaedic Surgery, Stanford Hospital and Clinics, Redwood City, California.

Background: For patients with isolated medial knee arthritis, unicompartmental knee arthroplasty (UKA) is an appealing surgical option. Compared with total knee arthroplasty (TKA), UKA is less invasive, preserves more native bone stock, has lower perioperative morbidity and mortality, allows for quicker recovery, and has higher patient satisfaction. It also allows for more dynamic proprioception and postural control, allowing for function more similar to a native knee. Read More

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Editorial Commentary: Posterolateral Malposition of the Cortical Hinge During Medial Open-Wedge High Tibial Osteotomy Increases Posterior Tibial Slope: Incomplete Posterior Osteotomy May Shift the Hinge From Lateral to Posterolateral.

Arthroscopy 2021 07;37(7):2202-2203

Sungkyunkwan University.

Medial open-wedge high tibial osteotomy is an established treatment option for relatively young patients with medial-compartment osteoarthritis and varus deformity. This procedure is mainly focused on correcting coronal malalignment; however, it inevitably affects the posterior tibial slope (PTS) in the sagittal plane. The alteration of the PTS significantly affects knee stability and kinematics. Read More

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A Medial Subvastus Approach for Lateral Unicompartmental Knee Arthroplasty: Technique Description and Early Outcome Results.

Arthroplast Today 2021 Jun 18;9:129-133. Epub 2021 Jun 18.

Bluegrass Orthopaedics, Lexington, KY, USA.

Background: Unicompartmental knee arthroplasty (UKA) treats arthritis involving only one compartment of the knee. Lateral UKA is mainly performed through medial parapatellar or lateral parapatellar approaches to the knee. This technique article introduces a medial subvastus approach to lateral UKA, discusses the clinical rationale behind its use, and offers a preliminary retrospective study on short-term outcomes of lateral UKAs using the lateral vs medial subvastus approaches. Read More

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Navigation-based analysis of associations between intraoperative joint gap and mediolateral laxity in total knee arthroplasty.

Knee 2021 Jun 17;30:314-321. Epub 2021 May 17.

Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan.

Background: No data have demonstrated how joint gap measured under a distraction force is actually associated with mediolateral laxity evaluated under a varus-valgus force during total knee arthroplasty (TKA). This study aimed to investigate the correlations between them using a navigation system.

Methods: A total of 113 primary navigated TKAs were included. Read More

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Robotic-Assisted Lateral Unicompartmental Knee Arthroplasty in a Patient With Nail-Patella Syndrome.

Arthroplast Today 2021 Apr 2;8:171-175. Epub 2021 Apr 2.

Department of Orthopaedic Surgery, Hospital for Special Surgery, West Palm Beach, FL.

A 59-year-old woman with nail patella syndrome (NPS) presented with progressive and severe right knee pain for the past 3 years. Imaging demonstrated laterally dislocated patella, with asymmetric femoral trochlea, and advanced lateral compartment arthritis. The patient underwent robotic-assisted lateral unicompartmental knee arthroplasty (RAUKA). Read More

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[Multivariate analysis of varus after Oxford unicompartmental knee arthroplasty].

Beijing Da Xue Xue Bao Yi Xue Ban 2021 Mar;53(2):293-297

Department of Adult Joint Reconstruction Surgery, Beijing Jishuitan Hospital, Beijing 100035, China.

Objective: To analyze the preoperative influencing factors of varus after Oxford unicompartmental knee arthroplasty.

Methods: A total of 660 patients (767 knees) undergoing Oxford unicompartmental knee arthroplasty in adult joint reconstruction surgery department of Beijing Jishuitan Hospital from January 2018 to December 2019 were retrospectively analyzed. Inclusive criteria: diagnosis was osteoarthritis, single compartment lesions in the medial side of the knee; preoperative flexion deformity was less than 10°, active range of motion was greater than 90°; preoperative X-ray full-length images of both lower limbs showed less than 15° varus (Noyes method); anterior cruciate ligament was well functioned, The cartilage of lateral compartment of knee joint was intact. Read More

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Early detection of osteoarthritis in the rat with an antibody specific to type II collagen modified by reactive oxygen species.

Arthritis Res Ther 2021 04 14;23(1):113. Epub 2021 Apr 14.

Barts and the London School of Medicine and Dentistry, Queen Mary University of London, Chaterhouse Square, London, EC1M 6BQ, UK.

Background: Osteoarthritis (OA) is a disease of the whole joint, with articular cartilage breakdown as a major characteristic. Inflammatory mediators, proteases, and oxidants produced by chondrocytes are known to be responsible for driving cartilage degradation. Nevertheless, the early pathogenic events are still unclear. Read More

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The role of intra-articular neuronal CCR2 receptors in knee joint pain associated with experimental osteoarthritis in mice.

Arthritis Res Ther 2021 04 7;23(1):103. Epub 2021 Apr 7.

Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center, 1735 W Harrison St, Room 714, Chicago, IL, 60612, USA.

Background: C-C chemokine receptor 2 (CCR2) signaling plays a key role in pain associated with experimental murine osteoarthritis (OA) after destabilization of the medial meniscus (DMM). Here, we aimed to assess if CCR2 expressed by intra-articular sensory neurons contributes to knee hyperalgesia in the early stages of the model.

Methods: DMM surgery was performed in the right knee of 10-week-old male wild-type (WT), Ccr2 null, or Ccr2 C57BL/6 mice. Read More

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Proximal tibial osteotomy for genu varum: Radiological evaluation of deformity correction with a plate external fixator.

World J Orthop 2021 Mar 18;12(3):140-151. Epub 2021 Mar 18.

Department of Orthopedic Surgery, Hospital for Special Surgery, Weill Medical College of Cornell University, New York, NY 10021, United States.

Background: High tibial osteotomy (HTO) is a well-known procedure for the correction of knee varus. The purpose of this study was to compare the radiological results and accuracy of deformity correction performed using two different techniques: acute opening wedge correction using a plate and gradual correction with a monolateral external fixator.

Aim: To compare of the radiological results of two different techniques: acute opening wedge correction (a plate and screw) and gradual correction (external fixator). Read More

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Expression and Localization of Thrombospondins, Plastin 3, and STIM1 in Different Cartilage Compartments of the Osteoarthritic Varus Knee.

Int J Mol Sci 2021 Mar 17;22(6). Epub 2021 Mar 17.

Institute of Biomechanics and Orthopaedics, German Sport University Cologne, 50933 Cologne, Germany.

Osteoarthritis (OA) is a multifactorial disease which is characterized by a change in the homeostasis of the extracellular matrix (ECM). The ECM is essential for the function of the articular cartilage and plays an important role in cartilage mechanotransduction. To provide a better understanding of the interaction between the ECM and the actin cytoskeleton, we investigated the localization and expression of the Ca-dependent proteins cartilage oligomeric matrix protein (COMP), thrombospondin-1 (TSP-1), plastin 3 (PLS3) and stromal interaction molecule 1 (STIM1). Read More

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Effect of High Tibial Osteotomy on the Distribution of Subchondral Bone Density Across the Proximal Tibial Articular Surface of the Knee With Medial Compartment Osteoarthritis.

Am J Sports Med 2021 05 2;49(6):1561-1569. Epub 2021 Apr 2.

Department of Orthopaedic Surgery, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan.

Background: The effect of high tibial osteotomy (HTO) on the stress distribution across the knee joint is not completely understood. Subchondral bone density is considered to reflect the pattern of stress distribution across a joint surface.

Purpose: To assess the distribution of subchondral bone density across the proximal tibia in nonarthritic knees and in the knees of patients with osteoarthritis (OA) before and after HTO. Read More

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The Clinical Radiographic Incidence of Posttraumatic Osteoarthritis 10 Years After Anterior Cruciate Ligament Reconstruction: Data From the MOON Nested Cohort.

Am J Sports Med 2021 04;49(5):1251-1261

Investigation performed at the Cleveland Clinic, Cleveland, Ohio, USA.

Background: The incidence of posttraumatic osteoarthritis (PTOA) based on clinical radiographic grading criteria at 10 years after anterior cruciate ligament (ACL) reconstruction (ACLR) has not been well-defined in a prospective cohort of young athletic patients.

Hypothesis: Among young athletic patients, there is a high incidence of clinical radiographic PTOA at 10 years after ACLR. Additionally, there is a significant difference in clinical radiographic osteoarthritis (OA) changes (joint space narrowing and osteophyte formation) between ACL-reconstructed and contralateral knees at 10 years. Read More

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The patellofemoral joint does not deteriorate clinically after open-wedge high tibial osteotomy.

Orthop Traumatol Surg Res 2021 06 28;107(4):102907. Epub 2021 Mar 28.

Department of orthopaedic surgery, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-ro, Jung-gu, Daegu, South Korea. Electronic address:

Background: After high tibial osteotomy (HTO), the loading of the lateral compartment can be increased. Moreover, the change of patellar height may adversely affect the patellofemoral joint and functional outcomes.

Hypothesis: We hypothesized that the cartilage of the lateral compartment and patellofemoral joint would worsen after open-wedge HTO and the overcorrection of HTO could worsen the cartilage state of the patellofemoral joint. Read More

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Postoperative laxity of the lateral soft tissue is largely negligible in total knee arthroplasty for varus osteoarthritis.

J Orthop Surg (Hong Kong) 2021 Jan-Apr;29(1):23094990211002002

Department of Orthopaedic Surgery, 13094Teikyo University School of Medicine, Tokyo, Japan.

Purpose: To evaluate the integrity of lateral soft tissue in varus osteoarthritis knee by comparing the mechanical axis under varus stress during navigation-assisted total knee arthroplasty before and after compensating for a bone defect with the implant.

Methods: Sixty-six knees that underwent total knee arthroplasty were investigated. The mechanical axis of the operated knee was evaluated under manual varus stress immediately after knee exposure and after navigation-assisted implantation. Read More

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Knee joint unloading and daily physical activity associate with cartilage T2 relaxation times 1 month after ACL injury.

J Orthop Res 2021 Mar 29. Epub 2021 Mar 29.

Department of Radiology, University of Nebraska Medical Center, Omaha, Nebraska, USA.

Osteoarthritis (OA) is prevalent after anterior cruciate ligament (ACL) injury, but mechanismsunderlying its development are poorly understood. The purpose of this study was to determine if gait biomechanics and daily physical activity (PA) associate with cartilage T2 relaxation times, a marker of collagen organization and water content, 1 month after ACL injury. Twenty-seven participants (15-35 years old) without chondral lesions completed magnetic resonance imaging, three-dimensional gait analysis, and 1 week of PA accelerometry. Read More

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Less polyethylene wear in monobloc compared to modular ultra-high-molecular-weight-polyethylene inlays in hybrid total knee arthroplasty: A 5-year randomized radiostereometry study.

Knee 2021 Mar 18;29:486-499. Epub 2021 Mar 18.

Department of Clinical Medicine, Aarhus University, Aarhus, Denmark; AutoRSA Research Group, Orthopaedic Research Unit, Aarhus University Hospital, Aarhus, Denmark; Department of Orthopedics, Aarhus University Hospital, Aarhus, Denmark.

Background: A modular polyethylene (PE) inlay in total knee arthroplasty (TKA) may wear on both sides. PE particles may induce osteolysis, which can lead to implant loosening. The aim of this study was to determine if PE wear in monobloc TKA differs from that ofmodular TKA at 60-month follow-up. Read More

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Cartilage repair examined by second-look arthroscopy following double-level osteotomy performed for osteoarthritic knees with severe varus deformity.

Knee 2021 Mar 11;29:411-417. Epub 2021 Mar 11.

Department of Orthopaedic Surgery, Hyogo College of Medicine, Japan.

Background: The purpose of this study was to examine the status of cartilage repair by second-look arthroscopy following double-level osteotomy (DLO) performed for osteoarthritic knees with severe varus deformity.

Methods: Forty-seven consecutive knees in 33 patients who underwent DLO were included in the study. The surgical technique used was a minimally invasive DLO procedure combining lateral closed-wedge distal femoral and medial open-wedge high tibial osteotomies. Read More

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Association between Patellofemoral and medial Tibiofemoral compartment osteoarthritis progression: exploring the effect of body weight using longitudinal data from osteoarthritis initiative (OAI).

Skeletal Radiol 2021 Sep 8;50(9):1845-1854. Epub 2021 Mar 8.

Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, 601 N Caroline St, JHOC 3142, Baltimore, MD, 21287, USA.

Objectives: To investigate the associations of medial and lateral patellofemoral osteoarthritis (PF-OA) at baseline with symptomatic and radiographic OA outcomes in the medial tibiofemoral compartment (MTFC) over 4 years, according to baseline overweight status.

Methods: Data and MRI images of 600 subjects in the FNIH-OA biomarkers consortium were used. Symptomatic worsening and radiographic progression of MTFC-OA were defined using Western Ontario and McMaster Universities Arthritis Index (WOMAC) pain scores and MTFC joint space narrowing (JSN) from baseline to 4-year follow-up. Read More

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September 2021

Differences in impact on adjacent compartments in medial unicompartmental knee arthroplasty versus high tibial osteotomy with identical valgus alignment.

Knee 2021 Mar 3;29:241-250. Epub 2021 Mar 3.

Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.

Background: It is unclear why medial unicompartmental knee arthroplasty (UKA) with postoperative valgus alignment causes adjacent compartment osteoarthritis more often than high tibial osteotomy (HTO) for moderate medial osteoarthritis of the knee with varus deformity. This study used a computer simulation to evaluate differences in knee conditions between UKA and HTO with identical valgus alignment.

Methods: Dynamic musculoskeletal computer analyses of gait were performed. Read More

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Joint-adjacent Adipose Tissue by MRI is Associated With Prevalence and Progression of Knee Degenerative Changes: Data from the Osteoarthritis Initiative.

J Magn Reson Imaging 2021 07 28;54(1):155-165. Epub 2021 Feb 28.

Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California, USA.

Background: Adipose tissue has recently gained interest as an independent imaging biomarker for osteoarthritis.

Purpose: To explore 1) cross-sectional associations between local subcutaneous fat (SCF) thickness at the knee and the extent of degenerative changes in overweight and obese individuals and 2) associations between local fat distribution and progression of osteoarthritis over 4 years.

Study Type: Retrospective cohort study. Read More

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Fixed bearing, all-polyethylene tibia, lateral unicompartmental arthroplasty - A final outcome study with up to 28 year follow-up of a single implant.

Knee 2021 Mar 17;29:101-109. Epub 2021 Feb 17.

Avon Orthopaedic Centre, Southmead Hospital, Bristol BS10 5NB, United Kingdom. Electronic address:

Background: Lateral unicompartmental arthroplasty (UKA) constitutes only 5-10% of all unicompartmental replacements performed. Whilst the short and medium term benefits are well documented, there remains concern regarding the higher revision rate when compared with total knee replacement. We report the long term clinical outcome and survivorship of a large series of lateral UKA. Read More

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Canine Elbow Dysplasia: Medial Compartment Disease and Osteoarthritis.

Vet Clin North Am Small Anim Pract 2021 Mar;51(2):475-515

ACCESS Bone & Joint Center, 9599 Jefferson Boulevard, Culver City, CA 90232, USA.

Erosion of the articular cartilage of the medial compartment of the elbow (the humeroulnar articulation) secondary to incongruency associated with elbow dysplasia or traumatic injury has been termed, medial compartment disease. When nonsurgical strategies to manage osteoarthritis (OA) fail, surgical solutions may be warranted. Surgical strategies reduce pain through off-loading of the medial compartment by load-shifting osteotomies of the humerus or ulna. Read More

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Medial Biplanar Closing-Wedge Distal Femoral Osteotomy Using an Articulated Tensioning Device for Controlled Osteotomy Closure.

Arthrosc Tech 2021 Jan 19;10(1):e79-e84. Epub 2020 Dec 19.

Steadman Clinic and Steadman Philippon Research Institute, Vail, Colorado, U.S.A.

Isolated lateral compartment arthritis or focal chondral defects in the setting of genu valgum in young, active individuals can be treated with a varus-producing distal femoral osteotomy with or without cartilage treatment. Both medial closing-wedge and lateral opening-wedge techniques have been described, with neither demonstrating clear superiority. The objective of this Technical Note is to describe a technique of biplanar medial opening-wedge with controlled reduction using an articulated tensioning device to achieve a safe, reproducible result. Read More

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January 2021

Prognostic factors for traumatic elbow osteoarthritis after terrible triad surgery, and functional impact.

Orthop Traumatol Surg Res 2021 04 28;107(2):102826. Epub 2021 Jan 28.

Pôle de chirurgie orthopédique et de traumatologie, service de chirurgie du membre supérieur, CHU de Strasbourg, Hôpital Hautepierre 2, avenue Molière, 67000 Strasbourg, France.

Introduction: Terrible triad (TT) of the elbow almost always requires surgery to prevent progression to chronic instability and more or less inevitable osteoarthritis. Progression toward osteoarthritis after well-conducted surgery and associated risk factors have been little reported. We performed a retrospective study: (1) to assess rates of post-traumatic elbow osteoarthritis after surgical treatment of TT; (2) to assess functional impact; and (3) to identify prognostic factors. Read More

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Association of subchondral bone marrow lesion localization with weight-bearing pain in people with knee osteoarthritis: data from the Osteoarthritis Initiative.

Arthritis Res Ther 2021 01 19;23(1):35. Epub 2021 Jan 19.

Pain Centre Versus Arthritis & NIHR Nottingham Biomedical Research Centre, University of Nottingham, Nottingham, NG5 1PB, UK.

Background: Subchondral bone marrow lesions (BMLs) detected on MRI in knee osteoarthritis (OA) are associated with knee pain. The prevalence and progression of subchondral BMLs are increased by mechanical knee load. However, associations of subchondral BML location with weight-bearing knee pain are currently unknown. Read More

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January 2021

Functional alignment achieves soft-tissue balance in total knee arthroplasty as measured with quantitative sensor-guided technology.

Bone Joint J 2021 Mar 20;103-B(3):507-514. Epub 2021 Jan 20.

Department of Trauma and Orthopaedic Surgery, University College London Hospitals, London.

Aims: Total knee arthroplasty (TKA) using functional alignment aims to implant the components with minimal compromise of the soft-tissue envelope by restoring the plane and obliquity of the non-arthritic joint. The objective of this study was to determine the effect of TKA with functional alignment on mediolateral soft-tissue balance as assessed using intraoperative sensor-guided technology.

Methods: This prospective study included 30 consecutive patients undergoing robotic-assisted TKA using the Stryker PS Triathlon implant with functional alignment. Read More

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Proximal fibular osteotomy for the management of medial compartment knee osteoarthritis: A systematic review and meta-analysis.

Knee 2021 Jan 30;28:169-185. Epub 2020 Dec 30.

Orthopaedic and Traumatology Surgeon, Ngimbang General Hospital, Lamongan, Indonesia.

Background: The promising prospects of proximal fibular osteotomy (PFO) as an alternative treatment of knee osteoarthritis (KOA), which has gained popularity in recent years, has yet to be systematically evaluated. Hence, this meta-analysis aims to critically assess the clinical and radiological outcome of PFO in the management of medial compartment KOA.

Methods: Literature searches through PubMed, Scopus, CENTRAL, CINAHL, Google Scholar, and ProQuest databases were conducted, searching for eligible studies published from inception up to April 2020. Read More

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January 2021

The Ideal Hinge Axis Position to Reduce Tibial Slope in Opening-Wedge High Tibial Osteotomy Includes Proximalization-Extension and Internal Rotation.

Arthroscopy 2021 05 24;37(5):1577-1584. Epub 2020 Dec 24.

Hospital for Special Surgery, New York, New York, U.S.A.

Purpose: To evaluate the effect of the hinge axis position on the posterior tibial slope (PTS) in medial opening-wedge high tibial osteotomy.

Methods: This study included adults with medial-compartment osteoarthritis who had computed tomography (CT) scans available that were amenable to Bodycad Osteotomy software analysis. Virtual osteotomies modeling a 10-mm medial opening-wedge gap were performed. Read More

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[Recommendations for unicondylar knee replacement in the course of time : A current inventory].

Orthopade 2021 Feb;50(2):104-111

IZO - Internationales Zentrum für Orthopädie, ATOS Klinik Heidelberg, Heidelberg, Deutschland.

Background: A higher patient satisfaction stands in contrast to higher revision rates of unicondylar knee joint endoprosthetics (UKE) compared to total knee joint endoprosthetics (TKE). Furthermore, old "dogmas" regarding indications and contraindications persist, which is still reflected in the significantly different case numbers.

Aim: The aim of this article is to provide an overview of the current literature regarding 1. Read More

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February 2021

Obesity Is Preferentially Associated With Patellofemoral Compartment Wear: A Magnetic Resonance Imaging Assessment.

J Am Acad Orthop Surg 2021 Jul;29(14):e722-e731

From the Department of Orthopaedics, University Hospitals Cleveland Medical Center, Cleveland, OH.

Background: A well-known association exists between obesity and knee osteoarthritis (OA) for both incidence and progression of the disease. However, the cartilage wear patterns in OA associated with obesity are less well studied.

Methods: The OA initiative, a prospective sample of 4,796 patients, was used for this study. Read More

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