1,674 results match your criteria Patellofemoral Arthritis

Higher risk of knee arthroplasty during ten-year follow-up if baseline radiographic osteoarthritis involves the patellofemoral joint: a CHECK Cohort Study.

BMC Musculoskelet Disord 2022 Jun 22;23(1):600. Epub 2022 Jun 22.

Department of General Practice, Erasmus University Medical Center Rotterdam, Doctor Molewaterplein 40, 3015 GD, Rotterdam, Netherlands.

Background: Patellofemoral OA is a strong risk factor for progression to generalized whole knee OA, but it is unknown whether involvement of the patellofemoral joint in early radiographic OA (ROA) is associated with risk of undergoing future knee arthroplasty. This is clinically relevant because patellofemoral OA likely requires a different treatment approach than tibiofemoral OA, and identifying prognostic factors for future arthroplasty might assist clinicians with prioritizing and guiding early interventions that could improve long-term outcomes. Therefore, we evaluated association of baseline patellofemoral or tibiofemoral ROA with undergoing knee arthroplasty over 10 years. Read More

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Knee Injury and Osteoarthritis Outcome Score Patellofemoral Questionnaire: Psychometric Properties among Females of Kingdom of Saudi Arabia.

Msaad Alzhrani

Int J Environ Res Public Health 2022 05 16;19(10). Epub 2022 May 16.

Department of Physical Therapy and Health Rehabilitation, College of Applied Medical Sciences, Majmaah University, Al Majma'ah 11952, Saudi Arabia.

Patellofemoral joint osteoarthritis (PFJ-OA), being a subset of knee osteoarthritis (KOA), is evident in adults, and its prevalence is greater in women in Saudi Arabia too. To assess its disease dimensions, the 'Knee Injury and Osteoarthritis Outcome Score Patellofemoral' questionnaire (KOOS-PF) is frequently used to measure symptoms and function among the people with PFJ-OA. Cross-cultural validation is ongoing in several languages, and it needed to be validated among females in Arabic. Read More

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Patellofemoral cartilage defects are acceptable in patients undergoing high tibial osteotomy for medial osteoarthritis of the knee.

BMC Musculoskelet Disord 2022 May 24;23(1):489. Epub 2022 May 24.

Department of Orthopedics and Trauma Surgery, Faculty of Medicine, Medical Center - Albert-Ludwigs-University of Freiburg, Albert-Ludwigs-University of Freiburg, Freiburg, Germany.

Background: Patients suffering cartilage defects of the medial compartment with underlying varus deformity do benefit from high tibial osteotomy (HTO) even in the long term. Nonetheless, kinematic and geometric changes especially in the patellofemoral joint have been described. Purpose of the present study was to evaluate the influence of patellofemoral cartilage defects detected during the diagnostic arthroscopy and their influence on HTO's postoperative outcome. Read More

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Concurrent validity and reliability of a semi-automated approach to measuring the magnetic resonance imaging morphology of the knee joint in active youth.

Proc Inst Mech Eng H 2022 May 5:9544119221095337. Epub 2022 May 5.

McCaig Institute of Bone and Joint Health, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.

Post-traumatic knee osteoarthritis is attributed to alterations in joint morphology, alignment, and biomechanics triggered by injury. While magnetic resonance (MR) imaging-based measures of joint morphology and alignment are relevant to understanding osteoarthritis risk, time consuming manual data extraction and measurement limit the number of outcomes that can be considered and deter widespread use. This paper describes the development and evaluation of a semi-automated software for measuring tibiofemoral and patellofemoral joint architecture using MR images from youth with and without a previous sport-related knee injury. 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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Group-based exercice training programs for military members presenting musculoskeletal disorders - protocol for a pragmatic randomized controlled trial.

BMC Musculoskelet Disord 2022 Apr 18;23(1):366. Epub 2022 Apr 18.

Center for Interdisciplinary Research in Rehabilitation and Social Integration (Cirris), Québec, Canada.

Background: Musculoskeletal disorders are a leading cause of morbidity and the most prevalent source of disability among soldiers. Their high prevalence in armed forces and limited ressources have led to problems related to access to physical rehabilitation care. To increase access, supervised group-based exercise programs for the most prevalent musculoskeletal disorders (low back pain, patellofemoral pain, rotator cuff-related shoulder pain or lateral ankle sprain) have been developed at a Canadian Armed forces (CAF) base, but their effectiveness has not been evaluated. Read More

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Increased signal intensity, not volume variation of infrapatellar fat pad in knee osteoarthritis: A cross-sectional study based on high-resolution magnetic resonance imaging.

J Orthop Surg (Hong Kong) 2022 Jan-Apr;30(1):10225536221092215

Department of Orthopaedic Surgery, 504354Third Xiangya Hospital of Central South University, Changsha, China.

Background: Infrapatellar fat pad (IPFP) is regarded as an essential knee tissue involved in osteoarthritis (OA) for its potential structural-related or metabolism-related function. This cross-sectional study aims to identify which part is more related to OA.

Methods: Patients with knee OA ( = 53) and healthy controls ( = 54) were prospectively recruited. Read More

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Medial Patellofemoral Ligament Repair with Suture Tape Augmentation: A Case Series With Five-Year Follow Up.

Surg Technol Int 2022 May;40:363-367

Faculty of Health Sciences and Sport, University of Stirling, Stirling, Scotland.

Introduction: The medial patellofemoral ligament (MPFL) is the main restraining force against lateral patellar displacement in the first 20 degrees of knee flexion and is often disrupted following patellar subluxation or dislocation. MPFL reconstruction is commonly performed to restore patellar stability but requires autograft harvest with associated donor site morbidity. The aim of this study was to assess the five-year outcomes of MPFL repair performed with suture tape augmentation. Read More

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Flip Autograft Technique for Anterolateral Femoral Deficiency in Total Knee Arthroplasty.

Arthroplast Today 2022 Jun 1;15:29-33. Epub 2022 Apr 1.

Department of Orthopaedics, West Virginia University School of Medicine, WVU School of Medicine, Morgantown, WV, USA.

Anterolateral bone loss of the femur within the trochlear groove presents a unique and rare issue in primary total knee arthroplasty (TKA). Unlike distal and posterior femur bone loss for which most contemporary TKA systems have modular augments, the same does not exist for anterolateral bone loss. We present a technique in which a patient's host bone from the standard distal femoral cuts was used to augment and provide a stable base for cementing of final femoral implants. Read More

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Osteoarthritic Severity in Unresurfaced Patellae Does Not Adversely Affect Patient-reported Outcomes in Contemporary Primary TKA.

J Am Acad Orthop Surg Glob Res Rev 2022 04 6;6(4). Epub 2022 Apr 6.

From the Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN (Dr. Schmidt, Farooq, Deckard, and Dr. Meneghini), and the IU Health Hip & Knee Center, IU Health Saxony Hospital, Fishers, IN (Dr. Meneghini).

Introduction: The degree of osteoarthritis (OA) acceptable to leave in a native patella during unresurfaced total knee arthroplasty (TKA) remains unknown. This study's purpose was to examine the effect of patellofemoral OA severity on patient-reported outcome measures (PROMs) in primary TKAs performed without patellar resurfacing.

Methods: One hundred ninety-three primary TKAs performed without patellar resurfacing were retrospectively reviewed. Read More

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Efficacy of Knee Taping in addition to a Supervised Exercise Protocol to Manage Pain and Functional Status in Individuals with Patellofemoral Osteoarthritis: A Randomized, Controlled Clinical Trial.

Pain Res Manag 2022 25;2022:2856457. Epub 2022 Mar 25.

Department of Physiotherapy, Prakash Institute of Physiotherapy Rehabilitation and Allied Medical Sciences, Chaudhary Charan Singh University, Meerut, Uttar Pradesh, India.

Purpose: This study aimed to investigate the effect of knee taping in addition to a supervised exercise protocol on the pain intensity and functional status of individuals with patellofemoral osteoarthritis (PF OA).

Methods: The study was based on a randomized, controlled pretest-posttest experimental group design. Following an initial screening, forty people with PF OA (mean age 55, range 40-60) were randomly assigned to one of two groups, Group A or Group B ( = 20 each). Read More

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Biomechanical lower limb model to predict patellar position alteration after medial open wedge high tibial osteotomy.

J Biomech 2022 May 26;136:111062. Epub 2022 Mar 26.

Univ. Grenoble Alpes, CNRS, TIMC-IMAG, 38000 Grenoble, France. Electronic address:

Medial open-wedge high tibial osteotomy is a surgical treatment for patients with a varus deformity and early-stage medial knee osteoarthritis. Observations suggest that this surgery can negatively affect the patellofemoral joint and change the patellofemoral kinematics. However, what causes these effects and how the correction angle can change the surgery's impact on the patellofemoral joint has not been investigated before. Read More

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Good patient satisfaction with low complications rate after trochleoplasty in patellofemoral instability.

Knee Surg Sports Traumatol Arthrosc 2022 Mar 30. Epub 2022 Mar 30.

Department of Orthopaedics, Lyon-Ortho-Clinic, Clinique de la Sauvegarde, Lyon, France.

Purpose: Trochlear dysplasia has been recognized as the most common factor in patients with patellofemoral dislocation. Trochleoplasty is a surgical procedure whose primary goal is to modify the femoral trochlea's abnormal shape in patients suffering from patellar instability, requiring good surgical skills, correct indication, and accurate patient information.

Methods: The review aims to describe preoperative planning, patient selection, most common surgical techniques, and clinical results of trochleoplasty in patellar instability in a reproducible manner. Read More

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Association between hamstring coactivation during isokinetic quadriceps strength testing and knee cartilage worsening over 24 months.

Osteoarthritis Cartilage 2022 Jun 18;30(6):823-831. Epub 2022 Mar 18.

Department of Rehabilitation Medicine, University of Kansas Medical Center, 3901 Rainbow Boulevard, Mailstop 1046, Kansas City, KS, 66160, USA. Electronic address:

Objective: This study aimed to determine longitudinal associations, including sex-specific differences, between greater knee flexor antagonist coactivation and worsening cartilage morphology in knees with or at risk for osteoarthritis (OA).

Design: Baseline measurements were collected at the 60-month visit of a longitudinal osteoarthritis study following community-dwelling participants (MOST). Knee flexor and extensor muscle activity were measured with surface electromyography during a maximal isokinetic knee extension task. Read More

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Patellar button compatibility in the conversion of Patellofemoral Arthroplasty to a Total Knee Arthroplasty: A review of the contemporary literature.

J Orthop Surg (Hong Kong) 2022 Jan-Apr;30(1):10225536221084147

College of Medicine & Public Health, 1065Flinders University, Bedford Park, SA, Australia.

Background: Compared to total knee arthroplasty (TKA), patellofemoral arthroplasty (PFA) is a far less commonly performed operation. However, in carefully selected cohorts, PFA continues to be an appropriate treatment option for end-stage isolated patellofemoral joint osteoarthritis. In the later situation whereby a PFA is considered for conversion to a TKA - often due to disease progression - uncertainty remains regarding optimal management of the in situ patellar button. 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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Muscle activation, strength, and volume in people with patellofemoral osteoarthritis: a systematic review and meta-analysis.

Osteoarthritis Cartilage 2022 Jul 5;30(7):935-944. Epub 2022 Mar 5.

Rural Department of Allied Health, Rural Health School, La Trobe University, Bendigo, VIC 3660, Australia. Electronic address:

Objective: This systematic review investigated whether people with patellofemoral osteoarthritis (PFOA) have muscle strength, volume, and activation around the hip and knee that is different from asymptomatic controls.

Methods: Searches were carried out in five electronic databases, with terms related to PFOA, including muscle strength, volume and activation. Only studies with at least one group with symptomatic PFOA and one asymptomatic group were included. Read More

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Comparison of Patellofemoral Outcomes between Attune and PFC Sigma Designs: A Prospective Matched-Pair Analysis.

Clin Orthop Surg 2022 Mar 16;14(1):96-104. Epub 2021 Mar 16.

Department of Orthopaedics, Breach Candy Hospital Trust, Mumbai, India.

Backgroud: Attune (DePuy Synthes) prosthesis was designed to overcome patellofemoral complications associated with PFC Sigma (DePuy Synthes) prosthesis. The aim of our study was to compare the incidence of anterior knee pain (AKP), patellofemoral crepitus (PCr), and functional outcome between them.

Methods: This prospective matched-pair study was conducted between January 2014 and June 2015, during which 75 consecutive Attune total knee arthroplasties (TKAs) were matched with 75 PFC Sigma TKAs based on age, sex, body mass index, pathology, and deformity. Read More

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Editorial Commentary: Isolated Patellofemoral Osteoarthritis May Be Treated Arthroscopically: Arthroscopic Partial Lateral Facetectomy Is a Good Alternative to More Aggressive Techniques.

Arthroscopy 2022 03;38(3):900-901

Madrid, Spain.

Isolated patellofemoral osteoarthritis is not uncommon, and treatment remains controversial. Several surgical procedures have been performed to treat this condition. The success of surgery highly depends on the technique and the patient selection. Read More

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Patient-related outcomes of patellofemoral arthroplasty: experience of a single center.

Arthroplasty 2021 Jun 3;3(1):19. Epub 2021 Jun 3.

West Suffolk NHS Trust, Hardwick Ln, Bury St Edmunds, Bury Saint Edmunds, IP33 2QZ, UK.

Purpose: The purpose of this prospective study was to present the experience of a single center on patellofemoral arthroplasty, in terms of patient-related outcomes.

Method: From January 2005 to January 2016, 42 patients with isolated patellofemoral osteoarthritis were treated. The patients were assessed using the Oxford Knee Score preoperatively, and one, five, and eight year(s) after surgery. Read More

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Staged BiCompartmental Knee Arthroplasty has Greater Functional Improvement, but Equivalent Midterm Survivorship, as Revision TKA for Progressive Osteoarthritis After Partial Knee Arthroplasty.

J Arthroplasty 2022 Jul 26;37(7):1260-1265. Epub 2022 Feb 26.

Rothman Orthopaedic Institute at Thomas Jefferson University, Philadelphia, PA.

Background: Progressive arthritis in the unresurfaced compartments of the knee is one failure mode after partial knee arthroplasty (PKA). While progressive arthritis after PKA is typically treated with revision to TKA (rTKA), staged bicompartmental knee arthroplasty (sBiKA) -the addition of another PKA - is an alternative. This study compared outcomes of sBiKA and rTKA for progressive arthritis after PKA. 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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Combined procedures with unicompartmental knee arthroplasty: High risk of stiffness but promising concept in selected indications.

SICOT J 2022 22;8. Epub 2022 Feb 22.

FIFA Medical Center of Excellence, Orthopaedics Surgery and Sports Medicine Department, Croix-Rousse Hospital, Hospices Civils de Lyon, 103 Grande rue de la Croix Rousse, 69004 Lyon, France - Univ Lyon, Claude Bernard Lyon 1 University, IFSTTAR, LBMC UMR_T9406, 25 Avenue François Mitterand, 69500 Lyon, France.

Introduction: Unicompartmental knee arthroplasty (UKA) has traditionally been contraindicated in the presence of an ACL deficient knee, bi-compartmental disease, or significant coronal deformity due to concerns regarding increased risk of persisted pain, knee instability, tibial loosening, or progression of osteoarthritis. The aim of this study was to evaluate the outcomes of patients undergoing UKA with an associated surgical procedure in these specific indications.

Method: This was a retrospective cohort study of patients undergoing UKA between December 2015 and October 2020. Read More

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February 2022

Patellofemoral contact forces after ACL reconstruction: A longitudinal study.

J Biomech 2022 03 10;134:110993. Epub 2022 Feb 10.

Department of Mechanical Engineering, University of Delaware, Newark, DE, United States; Biomechanics and Movement Science, University of Delaware, Newark, DE, United States; Department of Biomedical Engineering, University of Delaware, Newark, DE, United States.

Osteoarthritis (OA) development after ACL reconstruction (ACLR) is common. Patellofemoral OA after ACLR is as prevalent as tibiofemoral OA; however, few have explored the mechanisms leading to disease development in this compartment. Biomechanical alterations may be one mechanism responsible for post-traumatic knee OA. Read More

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Obesity impacts the mechanical response and biochemical composition of patellofemoral cartilage: An in vivo, MRI-based investigation.

J Biomech 2022 03 7;134:110991. Epub 2022 Feb 7.

Department of Orthopaedic Surgery, Duke University, Durham, NC, United States.

Obesity is a primary risk factor for osteoarthritis. While previous work has addressed relationships between in vivo cartilage mechanics, composition, and obesity in the tibiofemoral joint, there is limited information on these relationships in the patellofemoral joint. The purpose of this study was to compare the patellofemoral cartilage mechanical response to walking in participants with normal and obese body mass indices (BMIs). Read More

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Medial/central PF arthritis and functionally stable ACL deficiency do not compromise outcomes of fixed-bearing medial UKA.

Knee 2022 Mar 10;35:8-15. Epub 2022 Feb 10.

Harrogate and District Foundation Trust, North Yorkshire, England; Wexham Park Hospital, Slough, England.

Background: There is limited published data assessing functional scores and patient satisfaction following unicompartmental knee arthroplasty (UKA) in patients with patellofemoral (PF) arthritis or anterior cruciate ligament (ACL) deficiency. The purpose of this study was to determine whether medial/central PF arthritis or functionally stable ACL deficiency compromise outcomes of fixed-bearing medial UKA at a minimum follow-up of 2 years. The hypothesis was that equivalent outcomes can be achieved in patients with substantial medial/central PF arthritis or with functionally stable ACL deficiency. Read More

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Intraarticular injection of microfragmented adipose tissue plus arthroscopy in isolated primary patellofemoral osteoarthritis is clinically effective and not affected by age, BMI, or stage of osteoarthritis.

J Orthop Traumatol 2022 Feb 5;23(1). Epub 2022 Feb 5.

Multidisciplinary Department of Medico-Surgical and Dentistry Specialties, "Luigi Vanvitelli" University of Campania, Naples, Italy.

Purpose: This study aimed to report the clinical and functional results of a series of patients with isolated primary patellofemoral osteoarthritis (PFOA) treated with intraarticular injection of microfragmented autologous adipose tissue plus knee arthroscopy. The results were also analyzed in relation to the age and body mas index (BMI) of patients, and to the stage of PFOA.

Methods: Twenty-three patients with early-to-moderate (stage 1-3 according to the Iwano classification system) PFOA who received this treatment were retrospectively analyzed, with a mean follow-up of 22. Read More

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February 2022

Treatment Options for Patellofemoral Arthritis.

Curr Rev Musculoskelet Med 2022 Apr 4;15(2):90-106. Epub 2022 Feb 4.

Department of Orthopaedic Surgery, Division of Physical Medicine and Rehabilitation, Stanford University, 450 Broadway Street, Pavilion C, 4th Floor, Redwood City, CA, 94063, USA.

Purpose Of Review: To present a synthesis of recent literature regarding the treatment of patellofemoral arthritis RECENT FINDINGS: Risk factors of PFJ OA include patella malalignment or maltracking, injury to supportive structures including the MPFL, dysfunction of hamstring and quadriceps coordination, lower limb alignment, trochlear dysplasia, patellar trauma, or ACL surgery. Special physical exam maneuvers include patellar grind test, apprehension test, and lateral patellar tilt angle. Radiographs that should be obtained first-line include weight bearing bilateral AP, lateral, and Merchant views. Read More

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Recurrent Hemarthrosis Secondary to Erosive Patellofemoral Arthritis Treated with Arthroplasty: A Report of 3 Cases.

JBJS Case Connect 2022 01 12;12(1). Epub 2022 Jan 12.

Panorama Orthopedics and Spine Center, Golden, Colorado.

Case: Three patients presented with recurrent hemarthrosis secondary to erosive patellofemoral arthritis. Recurrent hemarthrosis from the eroded patellofemoral subchondral bone has not been well described. Each patient presented with symptoms secondary to painful effusions that were identified by aspiration. Read More

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January 2022

Enhanced arthrocentesis of the effusive knee with pneumatic compression.

Int J Rheum Dis 2022 Mar 4;25(3):303-310. Epub 2022 Jan 4.

Department of Internal Medicine, Division of Rheumatology, University of New Mexico Health Sciences Center, Albuquerque, New Mexico, USA.

Aim: Complete arthrocentesis of the effusive knee ameliorates patient pain, reduces intra-articular and intraosseous pressure, removes inflammatory cytokines, and has been shown to substantially improve the therapeutic outcomes of intra-articular injections. However, conventional arthrocentesis incompletely decompresses the knee, leaving considerable residual synovial fluid in the intra-articular space. The present study determined whether external pneumatic circumferential compression of the effusive knee permitted more successful arthrocentesis and complete joint decompression. Read More

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