1,272 results match your criteria Lateral Compartment Arthritis


Proximal fibular osteotomy relieves pain in spontaneous osteonecrosis of the knee: A retrospective study.

Medicine (Baltimore) 2022 Jul 29;101(30):e29585. Epub 2022 Jul 29.

Department of Orthopedics, National Cheng Kung University Hospital, Tainan City, Taiwan.

Spontaneous osteonecrosis of the knee (SONK) causes knee pain and joint motion limitation. Ischemia or insufficiency fracture may be the cause, but no consensus has been developed. Proximal fibular osteotomy (PFO) has been reported to relieve pain from osteoarthritis through medial compartment decompression. Read More

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Relationship of lower limb geometrics with femorotibial osteoarthritis in the toei cohort.

Sci Rep 2022 Jul 19;12(1):12342. Epub 2022 Jul 19.

Department of Orthopaedic Surgery, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashiku, Hamamatsu, Shizuoka, 431-3192, Japan.

Osteoarthritis (OA) is a common disease of joints that is more common in females than in males. It is characterized by severe knee degeneration, damaged cartilage and appearance of osteophytes. Hip geometry and morphometric parameters in the knee joint vary between the sexes and depend on the severity of OA and the presence of osteophytes. Read More

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Medial Unicompartmental Knee Arthroplasty Restores Native Knee Kinematics During Activities of Daily Living: A Pilot Study.

Ann Biomed Eng 2022 Jul 19. Epub 2022 Jul 19.

Department of Orthopaedic Surgery, Orthopaedic Biodynamics Laboratory, University of Pittsburgh, 3820 South Water Street, Pittsburgh, PA, 15206, USA.

The ability of unicompartmental knee arthroplasty (UKA) to restore native knee kinematics during activities of daily living remains unclear. The objectives of this prospective study were to identify changes in knee kinematics after medial UKA (mUKA) and to determine if mUKA restores native knee kinematics during activities of daily living. We hypothesized that kinematics are different between the mUKA knee and contralateral knee before surgery, that mUKA restores native knee kinematics, and that mUKA does not affect lateral compartment dynamic joint space. Read More

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Arithmetic hip-knee-ankle angle and stressed hip-knee-ankle angle: equivalent methods for estimating constitutional lower limb alignment in kinematically aligned total knee arthroplasty.

Knee Surg Sports Traumatol Arthrosc 2022 Jul 11. Epub 2022 Jul 11.

CPAK Research Group, Sydney, Australia.

Purpose: Kinematically aligned total knee arthroplasty (KA TKA) relies on precise determination of constitutional alignment to set resection targets. The arithmetic hip-knee-ankle angle (aHKA) is a radiographic method to estimate constitutional alignment following onset of arthritis. Intraoperatively, constitutional alignment may also be approximated using navigation-based angular measurements of deformity correction, termed the stressed HKA (sHKA). Read More

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[Long-term outcome follow-up of Oxford unicompartmental knee arthroplasty for medial compartment osteoarthropathy:a single center's experience for 10 years].

Zhonghua Wai Ke Za Zhi 2022 Jul;60(7):703-708

Department of Orthopedics,the Affiliated Hospital of Qingdao University,Qingdao 266000,China.

To investigate the long-term outcomes of minimally invasive Oxford phase Ⅲ unicompartmental knee arthroplasty (UKA) for patients with medial compartment osteoarthropathy. The clinical data of 594 patients (701 knees) who underwent minimally invasive UKA with Oxford phase Ⅲ unicompartmental prosthesis at Department of Orthopedics,the Affiliated Hospital of Qingdao University from January 2007 to January 2016 were retrospectively analyzed.There were 155 males and 439 females,aged (62. Read More

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Editorial Commentary: An Inverted V-Shaped High Tibial Osteotomy Combining a Lateral Closing Wedge and Medial Opening Wedge May Have Advantages.

Authors:
Chris Servant

Arthroscopy 2022 06;38(6):1966-1968

High tibial osteotomy (HTO) is enjoying somewhat of a resurgence as a treatment for medial compartment arthritis with a varus deformity. An inverted V-shaped high tibial osteotomy (IVHTO), which is essentially a combined lateral closing-wedge high tibial osteotomy (CWHTO) and medial opening-wedge high tibial osteotomy (OWHTO), has some theoretical benefits over more conventional techniques. This also has been termed a combined HTO or a hemi-wedge osteotomy. Read More

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Modulation of internal tissue stresses of the knee via control of variable-stiffness properties in a 3D-printed footwear: A combined experimental and finite element analysis.

Med Eng Phys 2022 06 14;104:103800. Epub 2022 Apr 14.

Department of Orthopaedics, Huashan Hospital affiliated to Fudan University, 12 Middle Wulumuqi Road, Shanghai, China.

Aims: Therapeutic footwear with variable-stiffness properties has been shown to be effective in reducing the external knee adduction moment. However, the exact changes of internal tissue stresses following intervention with variable-stiffness footwear remains unknown. The objective of this study is to construct a finite element model of the foot-ankle-knee complex to investigate the therapeutic efficacy of the variable-stiffness footwear in modulating internal knee joint stress distributions. Read More

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Does a lateral tibial plateau fracture (Takeuchi type III) occuring during opening wedge high tibial osteotomy induce a higher revision rate to total knee arthroplasty.

Acta Biomed 2022 03 10;92(S3):e2021558. Epub 2022 Mar 10.

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Background And Aim: High tibial osteotomies (HTO) are effective procedures to treat younger patients affected by moderate but symptomatic arthritis. Open-wedge HTO (OW-HTO) is more often performed compared to a closing wedge osteotomy to treat varus arthritis of the knee due to a lower incidence of complications and better results: lateral hinge fracture (LHF) is the most common complication of OW-HTO. Intra articular fractures of the lateral tibial plateau (Takeuchi type III) appear as a particularly serious complication due to its extension to the subchondral bone of the compartment towards which the load is shifted. Read More

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Lef1 ablation alleviates cartilage mineralization following posttraumatic osteoarthritis induction.

Proc Natl Acad Sci U S A 2022 05 20;119(21):e2116855119. Epub 2022 May 20.

Institute of Biomedical and Oral Research, Faculty of Dental Medicine, Hebrew University of Jerusalem, Jerusalem, 9112102 Israel.

Cartilage mineralization is a tightly controlled process, imperative for skeletal growth and fracture repair. However, in osteoarthritis (OA), cartilage mineralization may impact the joint range of motion, inflict pain, and increase chances for joint effusion. Here we attempt to understand the link between inflammation and cartilage mineralization by targeting Sirtuin 1 (SIRT1) and lymphoid enhancer binding factor 1 (LEF1), both reported to have contrasting effects on cartilage. Read More

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Malposition of components and Femorotibial mechanical Axis changes on pressure distribution in Total knee arthroplasty.

Clin Biomech (Bristol, Avon) 2022 06 6;96:105659. Epub 2022 May 6.

Department of Orthopaedic Surgery, Beijing Jishuitan Hospital, Fourth Clinical College of Peking University, Beijing 100035, China. Electronic address:

Background: To the best of our knowledge, no report has analyzed the postoperative results of poor prosthesis position, particularly when the femoral and tibial components are abnormally positioned relative to neutral lower limb alignment. We aimed to investigate pressure distribution in the knee at different lower limb alignments with diverse positions of femoral and tibial components.

Methods: We established a three-dimensional model of the lower limb using computed tomography and simulated total knee arthroplasty. Read More

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Frontal plane biomechanics during single-leg squat and hip strength in patients with isolated patellofemoral osteoarthritis compared to matched controls: A cross-sectional study.

PLoS One 2022 27;17(4):e0267446. Epub 2022 Apr 27.

Department of Physical Therapy, Federal University of São Carlos, São Carlos, SP, Brazil.

The patellofemoral compartment of the knee is the most frequently affected by osteoarthritis. However, there is a lack of biomechanics studies on patellofemoral osteoarthritis (PFOA). This study's purpose was to compare the frontal plane biomechanics of the trunk and lower limb during the single-leg squat and isometric hip abductor torque in individuals with isolated PFOA and controls. Read More

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Biomechanical consequences of anterior root detachment of the lateral meniscus and its reinsertion.

Sci Rep 2022 04 13;12(1):6182. Epub 2022 Apr 13.

Clinical Biomechanics of Andalucia Laboratory, University of Malaga, Malaga, Spain.

Treatment of posterior meniscal roots tears evolved after biomechanical evidence of increased pressures on the tibiofemoral cartilage produced by this lesion and the subsequent accelerated development of arthritis or osteonecrosis observed clinically. However, little is known about the consequences of the detachment of the anterior roots. This in-vitro study analyzes the biomechanical changes in the tibiofemoral joint caused by avulsion of the anterior root of the lateral meniscus. Read More

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Short-Term Outcomes of Robotic Lateral Unicompartmental Knee Arthroplasty: An Indian Perspective.

Indian J Orthop 2022 Apr 12;56(4):655-663. Epub 2021 Nov 12.

Department of Biostatistics, Amrita Institute of Medical Sciences and Research Centre, Kochi, Kerala, 682026 India.

Background: Lateral UKA is a technically more challenging procedure than medial UKA accounting for < 1% of all knee arthroplasties. Robotic UKA for lateral compartment arthritis is rare and has not been reported in India.

Materials And Methods: This is a prospective single-centre clinical study of six patients (five females and one male) who underwent robotic-arm-assisted lateral UKA (RALUKA) between May 2018 and January 2020 with patient-specific 3D-CT preoperative plan. Read More

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Regeneration of the lateral discoid meniscus after arthroscopic saucerization in an adult patient undergoing high tibial osteotomy: A case report.

Clin Case Rep 2022 Mar 15;10(3):e05574. Epub 2022 Mar 15.

Joint & Arthritis Research, Department of Orthopaedic Surgery Himchan Hospital Seoul Republic of Korea.

Arthroscopic saucerization of the lateral discoid meniscus is considered due to an increase in the load of the lateral compartment after high tibial osteotomy (HTO). We report a case of lateral discoid meniscus regeneration after arthroscopic saucerization in a middle-aged female patient who underwent HTO. Read More

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Gait modification with subject-specific foot progression angle in people with moderate knee osteoarthritis: Investigation of knee adduction moment and muscle activity.

Knee 2022 Mar 18;35:124-132. Epub 2022 Mar 18.

Exercise Physiology Research Center, Lifestyle Institute, Department of Rheumatology, Baqiyatallah University of Medical Sciences, Tehran, Iran.

Background: Subject-specific foot progression angle (SSFPA) as a personalized gait modification is a novel approach to specifically reducing knee adduction.

Objective: This study aimed to investigate the effect of gait modification with SSFPA on the knee adduction moment and muscle activity in people with moderate knee osteoarthritis (KOA).

Methods: In this clinical trial, nineteen volunteers with moderate KOA were instructed to walk in four different foot progression angle conditions (5° toe-out, 10° toe-out, 5° toe-in, and 10° toe-in) to determine SSFPA that caused the greatest reduction in the greater peak of the knee adduction moment (PKAM). Read More

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Meniscal anterior and posterior horn heights are associated with MRI-defined knee structural abnormalities in middle-aged and elderly patients with symptomatic knee osteoarthritis.

BMC Musculoskelet Disord 2022 Mar 8;23(1):218. Epub 2022 Mar 8.

Department of Radiology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China.

Background: Meniscal morphological changes are associated with knee OA. However, the correlation of meniscal height and OA-related knee structural abnormalities is still not well understood. The purpose of present study is to investigate whether and how meniscal anterior and posterior horn heights are associated with structural abnormalities in knees with symptomatic OA. Read More

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Early results of fixed-bearing unicompartmental knee replacement designed for the lateral compartment.

J Orthop Surg Res 2022 Mar 5;17(1):146. Epub 2022 Mar 5.

Nuffield Orthopaedic Centre, Oxford University Hospitals NHS Foundation Trust, Windmill Road, Headington, Oxford, OX3 7LD, UK.

Background: Isolated lateral compartment knee arthritis is less prevalent than medial. While the reported results of medial unicompartmental knee replacement (UKR) have been good and comparable to total knee replacement, the results of lateral UKR have been mixed. We present the short-term results and survivorship of a fixed-bearing UKR designed specifically for the lateral compartment. Read More

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Minimum 10-Year Survivorship of Mobile-Bearing Unicompartmental Arthroplasty: Single Surgeon, North American Non-Designer Consecutive Series.

J Arthroplasty 2022 06 23;37(6S):S88-S93. Epub 2022 Feb 23.

Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota.

Background: Mobile-bearing unicompartmental knee arthroplasty (UKA) provides a durable option for the surgical treatment of monocompartmental knee arthritis. Despite its availability in the United States since 2004, there is only 1 published North American series reporting on the minimum 10-year results of mobile-bearing UKA. The purpose of this study is to determine the survivorship, reasons for failure, and patient-reported outcomes of the Oxford mobile-bearing UKA at minimum 10-year follow-up. Read More

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Heterogeneity of cartilage damage in Kellgren and Lawrence grade 2 and 3 knees: the MOST study.

Osteoarthritis Cartilage 2022 05 22;30(5):714-723. Epub 2022 Feb 22.

Quantitative Imaging Center (QIC), Department of Radiology, Boston University School of Medicine, Boston, MA, USA; Department of Radiology, VA Boston Healthcare System, West Roxbury, MA, USA.

Objective: Eligibility for clinical trials in osteoarthritis (OA) is usually limited to Kellgren-Lawrence (KL) grades 2 and 3 knees. Our aim was to describe the prevalence and severity of cartilage damage in KL 2 and 3 knees by compartment and articular subregion.

Design: The Multicenter Osteoarthritis (MOST) study is a cohort study of individuals with or at risk for knee OA. Read More

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Is the lateral tibial spine a reliable landmark for planning tibial or femoral valgus osteotomies?

Orthop Traumatol Surg Res 2022 05 17;108(3):103253. Epub 2022 Feb 17.

Institut du mouvement et de l'appareil locomoteur, hôpital Sainte-Marguerite, Aix-Marseille université, 270, boulevard Sainte-Marguerite, 13009 Marseille, France. Electronic address:

Introduction: A valgus osteotomy around the knee is a conservative procedure performed to unload the medial tibiofemoral compartment. However, the optimal postoperative alignment target remains controversial. Many studies have applied a "Fujisawa point" at 62. Read More

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Osteochondral autograft transplantation in the treatment of AO/OTA type C3 tibial plafond fractures with irreducibly comminuted area and/or cartilage delamination in the distal tibial facet.

Injury 2022 Apr 26;53(4):1523-1531. Epub 2022 Jan 26.

Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China.

Introduction: Tibial plafond fractures, especially the AO/OTA type C3 ones that take place in young patients with excessive facet fragmentation and cartilage loss that preclude anatomical reduction and effective internal fixation, are devastating situations that often subject to primary arthrodesis. The aim of the current study is to introduce a joint preserving technique by using osteochondral autograft to treat such difficult cases and to evaluate its short-term outcome.

Methods: A total of 11 patients suffering AO-OTA type C3 tibial plafond fractures with irreparable area treated with osteochondral autograft and ORIF, with an average follow-up period of 34 months, were analyzed. Read More

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The Lawrence D. Dorr Surgical Techniques & Technologies Award: Patient Acceptable Symptom State (PASS) in Medial and Lateral Unicompartmental Knee Arthroplasty: Does the Status of the ACL Impact Outcomes?

J Arthroplasty 2022 08 3;37(8S):S710-S715. Epub 2022 Feb 3.

Orthopaedic Foundation, Stamford, CT.

Background: The aim of this study is to determine if there is a difference in the percentage of patients who reach Patient Acceptable Symptom State (PASS) when comparing anterior cruciate ligament (ACL)-deficient and ACL-intact knees following fixed-bearing medial and lateral unicompartmental knee arthroplasty (UKA).

Methods: A consecutive series of 215 knees that underwent UKA (medial = 158, lateral = 57) were included in the study. The Knee Osteoarthritis Outcome Score functional score [KOOS activities of daily living (ADL)] and KOOS Sport were used as the primary outcome variables. Read More

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Does Implant Design Influence Failure Rate of Lateral Unicompartmental Knee Arthroplasty? A Meta-Analysis.

J Arthroplasty 2022 05 1;37(5):985-992.e3. Epub 2022 Feb 1.

2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy; University of Bologna, Bologna, Italy.

Background: Lateral unicompartmental knee arthroplasty (UKA) is a viable solution for isolated lateral compartment arthritis. Several prosthetic designs are available such as fixed-bearing metal-backed (FB M-B), fixed-bearing all-polyethylene (FB A-P), and mobile-bearing metal-backed (MB M-B) implants. The purpose of this meta-analysis is to compare failure rates of different prosthetic designs. Read More

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Associations between the morphological parameters of proximal tibiofibular joint (PTFJ) and changes in tibiofemoral joint structures in patients with knee osteoarthritis.

Arthritis Res Ther 2022 01 27;24(1):34. Epub 2022 Jan 27.

Clinical Research Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China.

Background: To describe the longitudinal associations between the morphological parameters of proximal tibiofibular joint (PTFJ) and joint structural changes in tibiofemoral compartments in patients with knee osteoarthritis (OA).

Methods: The participants were selected from the Vitamin D Effects on Osteoarthritis (VIDEO) study. PTFJ morphological parameters were measured on coronal and sagittal MRI. Read More

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January 2022

Midterm Survivorship of Robotic-Assisted Lateral Unicompartmental Knee Arthroplasty.

J Arthroplasty 2022 05 19;37(5):831-836. Epub 2022 Jan 19.

Department of Orthopaedic Surgery, Keck School of Medicine of USC, Los Angeles, CA.

Background: Lateral unicompartmental knee arthroplasty (UKA) is a popular alternative to total knee arthroplasty (TKA) for patients with isolated lateral compartment osteoarthritis. Few studies have investigated outcomes following robotic-assisted lateral UKA. The purpose of this study is to evaluate mid-term survivorship and patient-reported outcomes of robotic-assisted lateral UKA. Read More

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Biomechanical Characteristics of the Knee Joint during Gait in Obese versus Normal Subjects.

Int J Environ Res Public Health 2022 01 16;19(2). Epub 2022 Jan 16.

Mechanical Engineering Department, Australian College of Kuwait, East Mishref, P.O. Box 1411, Safat 12000, Kuwait.

Knee osteoarthritis (OA) is a growing source of pain and disability. Obesity is the most important avoidable risk factor underlying knee OA. The processes by which obesity impacts osteoarthritis are of tremendous interest to osteoarthritis researchers and physicians, where the joint mechanical load is one of the pathways generally thought to cause or intensify the disease process. Read More

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January 2022

[Effectiveness of intraoperative tibia fibular angle and femoral fibular angle in predicting coronal lower limb alignment after medial open-wedge high tibial osteotomy].

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2022 Jan;36(1):58-64

Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, P. R. China.

Objective: To explore the prediction of postoperative coronal lower limb alignment by the tibia fibular angle (TFA) and femoral fibular angle (FFA) after osteotomy in medial open-wedge high tibial osteotomy (MOWHTO).

Methods: A clinical data of 20 patients with medial compartment osteoarthritis, who were treated with MOWHTO between September 2019 and September 2020, was retrospectively analyzed. Among them, there were 9 males and 11 females; the age ranged from 46 to 69 years, with an average of 56. Read More

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January 2022

Are All Unloader Braces Created Equal? Recommendations for Evidence-Based Implementation of Unloader Braces for Patients with Unicompartmental Knee OA.

J Knee Surg 2022 Feb 24;35(3):249-254. Epub 2021 Dec 24.

Department of Orthopedic Surgery, Missouri Orthopedic Institute, University of Missouri, Columbia, Missouri.

Unicompartmental knee osteoarthritis (UKOA) is a complex issue that is estimated to affect roughly 28% of patients with knee OA, and can result in severe cartilage degeneration, meniscus deficiency, and concomitant varus or valgus malalignment. This malalignment results in abnormally high joint reaction forces in the affected compartment, which can elicit pain, cause dysfunction, and exacerbate joint degradation. For more than two decades, the use of knee unloader braces has been advocated as a cost-effective option for symptomatic management of UKOA. Read More

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February 2022

Comparison of the joint laxity of total knee arthroplasty evaluated by the distraction force and the varus-valgus force.

Knee 2022 Jan 5;34:98-107. Epub 2021 Dec 5.

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

Background: Component gap (CG) measurement help surgeons evaluate intraoperative soft-tissue balance. One technique is measuring the CG using tensioner devices with distraction force. Another is to evaluate the laxity under a varus-valgus force using navigation or robotics. Read More

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January 2022

[Comparison of two osteotomies in the treatment of medial compartment osteoarthritis].

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2021 Nov;35(11):1440-1448

Department of Orthopedics, Aviation General Hospital of China Medical University, Beijing, 100012, P.R.China.

Objective: To compare the effectiveness of modified distal tibial tubercle-high tibial osteotomy (DTT-HTO) and open-wedge HTO (OWHTO) in the treatment of medial compartment osteoarthritis.

Methods: A clinical data of 80 patients with medial compartment osteoarthritis treated with HTO between January 2016 and January 2019 was retrospectively analyzed, including 40 patients treated with DTT-HTO (DTT-HTO group) and 40 patients treated with OWHTO (OWHTO group). There was no significant difference in gender, age, body mass index, affected side, disease duration, Kellgren-Lawrence grading of osteoarthritis, and preoperative knee society score (KSS), Hospital for Special Surgery (HSS) score, knee joint visual analogue scale (VAS) score, hip-knee-ankle angle (HKA), posterior tibial slope (PTS), weight-bearing line ratio (WBL), Blackburne-Peel index (BPI), Caton-Deschamps index (CDI), and Insall-Salvati index (ISI) between the two groups ( >0. Read More

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November 2021