1,534 results match your criteria Patellofemoral Arthritis


Arthroscopy-controlled medial reefing and lateral release for recurrent patellar dislocation: clinical, radiologic outcomes and complications.

BMC Musculoskelet Disord 2021 May 10;22(1):430. Epub 2021 May 10.

Department of Orthopaedic Surgery, Korea University Ansan Hospital, 123, Jeokgeum-ro, Danwon-Gu, Gyeongki-do, Ansan-si, 15355, Republic of Korea.

Background: Few studies have reported the clinical outcomes of the medial reefing procedure and lateral release with arthroscopic control of medial retinacular tension in patients with recurrent patellar dislocation. The purpose of this study was to investigate the clinical, radiologic outcomes and complications of arthroscopy-controlled medial reefing and lateral release.

Methods: Patients who underwent arthroscopy-controlled medial reefing and lateral release for recurrent patellar dislocation between November 2007 and June 2017 were retrospectively evaluated. Read More

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Tibial Osteolysis After Long-Term Isolated Polyethylene Patellar Resurfacing.

Arthroplast Today 2021 Apr 14;8:211-215. Epub 2021 Apr 14.

Department of Orthopaedic Surgery, University of Arkansas for Medical Sciences, Little Rock, AR, USA.

Isolated patellar resurfacing served as an early treatment for patellofemoral arthritis but was abandoned because of erosion of the native femoral trochlear groove over time. We present the case of a large native tibial osteolytic lesion 20 years after isolated patellar resurfacing with a cemented polyethylene component. The patient had severe tricompartmental arthritic changes. Read More

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Mid- to long-term follow-up of combined small implants.

Bone Joint J 2021 May;103-B(5):840-845

Sezione di Chirurgia Protesica ad Indirizzo Robotico - Unità di Traumatologia dello Sport, U.O. Ortopedia e Traumatologia, Fondazione Poliambulanza, Brescia, Italy.

Aims: In the last decade, interest in partial knee arthroplasties and bicruciate retaining total knee arthroplasties has increased. In addition, patient-related outcomes and functional results such as range of movement and ambulation may be more promising with less invasive procedures such as bicompartmental arthroplasty (BCA). The purpose of this study is to evaluate clinical and radiological outcomes after a third-generation patellofemoral arthroplasty (PFA) combined with a medial or lateral unicompartmental knee arthroplasty (UKA) at mid- to long-term follow-up. Read More

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Patellar resurfacing has minimal impact on in vitro tibiofemoral kinematics during deep knee flexion in total knee arthroplasty.

Knee 2021 Apr 28;30:163-169. Epub 2021 Apr 28.

Department of Molecular Medicine Arthritis Research, The Scripps Research Institute, CA, USA; Shiley Center for Orthopaedic Research and Education at Scripps Clinic, CA, USA. Electronic address:

Background: While patellar resurfacing can affect patellofemoral kinematics, the effect on tibiofemoral kinematics is unknown. We hypothesized that patellar resurfacing would affect tibiofemoral kinematics during deep knee flexion due to biomechanical alteration of the extensor mechanism.

Methods: We performed cruciate-retaining TKA in fresh-frozen human cadaveric knees (N = 5) and recorded fluoroscopic kinematics during deep knee flexion before and after the patellar resurfacing. Read More

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Efficacy of Non-Invasive Radiofrequency-Based Diathermy in the Postoperative Phase of Knee Arthroplasty: A Double-Blind Randomized Clinical Trial.

J Clin Med 2021 Apr 10;10(8). Epub 2021 Apr 10.

Department of Health Sciences, University of Jaén, 23071 Jaén, Spain.

Total knee replacement (TKR) surgery ameliorates knee function and the quality of life of patients, although 20% still experience dissatisfaction due to pain limiting their function. Radiofrequency Diathermy (MDR) has shown improvements in knee osteoarthritis and patellofemoral pain syndrome. As such, this study aims to assess the effects of MDR in the postoperative treatment of TKR patients. Read More

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Patellofemoral arthroplasty versus total knee arthroplasty for isolated patellofemoral osteoarthritis: a systematic review and meta-analysis.

J Orthop Surg Res 2021 Apr 15;16(1):264. Epub 2021 Apr 15.

Department of Orthopaedics, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Jichang Road 16#, District Baiyun, Guangzhou, Guangdong, China.

Background: Isolated patellofemoral osteoarthritis (PF-OA) is a common subtype of knee osteoarthritis, leading to a huge economic burden on health care systems. Although previous studies have shown that patellofemoral arthroplasty (PFA) and total knee arthroplasty (TKA) have good clinical effects, it remains largely unclear which treatment is more effective for patients with isolated PF-OA. We aimed to compare postoperative function, complications, revision rates, level of physical activity, and satisfaction rate between the two surgical techniques. Read More

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Operative Treatment Options for Patellofemoral Arthritis: An Expert Recommendation of the AGA Patellofemoral Committee.

Orthop J Sports Med 2021 Mar 30;9(3):2325967121994849. Epub 2021 Mar 30.

Background: The operative therapy of patellofemoral arthritis requires an individual approach depending on the underlying injury. However, the literature lacks recommendations for its course of action.

Purpose: To generate an expert recommendation of therapy for different patellofemoral abnormalities in patients suffering from isolated patellofemoral arthritis. Read More

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[Focal femoral resurfacing and unicompartmental knee replacement : Between osteotomy and total knee replacement].

Orthopade 2021 May 13;50(5):387-394. Epub 2021 Apr 13.

Klinik für Orthopädie, Uniklinikum Magdeburg, Magdeburg, Deutschland.

Unicompartmental knee arthroplasty, especially for both femorotibial compartments of the knee, is an established partly joint-saving treatment option for osteoarthritis of the knee if the disease is limited to one compartment. Even smaller implants or resurfacing of the patellofemoral joint have been shown-in smaller patient collectives-to have the potential to yield good clinical results. Read More

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[The influence of axial deformities and their correction on the development and progression of osteoarthritis].

Orthopade 2021 May 12;50(5):378-386. Epub 2021 Apr 12.

Sektion Sportorthopädie, Orthopädische Klinik und Poliklinik, Universitätsmedizin Rostock, Rostock, Deutschland.

A cornerstone in the treatment of osteoarthritis in young patients is the evaluation and correction of the leg axis. The combination of a joint injury (meniscus, cartilage, ligament) and an axis deviation inevitably, depending on its extent and the patient's comorbidities such as obesity, leads to progressive osteoarthritis of the knee after a few years. In addition to the precise deformity analysis for osteotomy planning, it is important to know the normal ranges of the corresponding angles and to define a target value for axis correction. Read More

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Midterm results of modern patellofemoral arthroplasty versus total knee arthroplasty for isolated patellofemoral arthritis: systematic review and meta-analysis of comparative studies.

Arch Orthop Trauma Surg 2021 Apr 7. Epub 2021 Apr 7.

Department of Trauma and Orthopaedic Surgery, Cork University Hospital, Wilton, Cork, Ireland.

Background: Both Patellofemoral Arthroplasty (PFA) and Total Knee Arthroplasty (TKA) are accepted surgical options for end-stage isolated patellofemoral osteoarthritis (PFOA). We performed a systematic review and meta-analysis to compare outcomes of PFA and TKA by evaluation of the patient-reported outcome measures (PROMs).

Methods: We systematically identified publications reporting on patients that underwent either TKA or modern PFA for isolated PFOA. Read More

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The lack of retropatellar resurfacing at index surgery is significantly associated with failure in patients following patellofemoral inlay arthroplasty: a multi-center study of more than 260 patients.

Knee Surg Sports Traumatol Arthrosc 2021 Apr 2. Epub 2021 Apr 2.

Department of Orthopedic Sports Medicine, Klinikum rechts der Isar, Technical University of Munich, Ismaninger Str. 22, 81675, Munich, Germany.

Purpose: To evaluate the clinical outcomes of patients with a minimum 2-year follow-up following contemporary patellofemoral inlay arthroplasty (PFIA) and to identify potential risk factors for failure in a multi-center study.

Methods: All patients who underwent implantation of PFIA between 09/2009 and 11/2016 at 11 specialized orthopedic referral centers were enrolled in the study and were evaluated retrospectively at a minimum 2-year follow-up. Clinical outcomes included the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score, the Knee Injury and Osteoarthritis Outcome Score (KOOS), the Tegner Scale, the visual analogue scale (VAS) for pain, and subjective patient satisfaction. Read More

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Onlay Patellofemoral Arthroplasty in Patients With Isolated Patellofemoral Arthritis: A Systematic Review.

J Arthroplasty 2021 Mar 1. Epub 2021 Mar 1.

Orthopaedic Surgery Department, Washington DC Veterans Affairs Medical Center, Washington, DC.

Background: Patellofemoral arthroplasty (PFA) for isolated patellofemoral osteoarthritis (OA) remains controversial due to variable postoperative outcomes and high failure rates. Second-generation (2G) onlay prostheses have been associated with improved postoperative outcomes. This systematic review was performed to assess the current overall survivorship and functional outcomes of 2G PFA. Read More

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Development of a Multivariable Model Based on Individual Risk Factors for Recurrent Lateral Patellar Dislocation.

J Bone Joint Surg Am 2021 Apr;103(7):586-592

Hospital for Special Surgery, New York, NY.

Background: Nonoperative treatment after first-time patellar dislocation is the standard of care. There is evidence that certain patients may be at high risk for recurrent instability. The aim of this study was to develop a multivariable model to guide management of patients based on their individual risk of recurrent dislocation. Read More

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MRI-defined Osteophyte Presence and Concomitant Cartilage Damage in Knees with Incident Tibiofemoral Osteoarthritis: Data From The Pivotal Osteoarthritis Initiative Magnetic Resonance Imaging Analyses (POMA) Study.

Arthritis Care Res (Hoboken) 2021 Mar 26. Epub 2021 Mar 26.

Quantitative Imaging Center, Department of Radiology, Boston University School of Medicine, FGH Building, 820 Harrison Avenue, Boston, MA, 02118, USA.

Objective: To describe compartmental frequencies of MRI-defined osteophytes and co-localized cartilage damage and evaluate the associations of osteophyte (OP) size with any ipsicompartmental cartilage damage in knees with incident tibiofemoral radiographic knee osteoarthritis (ROA).

Methods: We evaluated knees from the Osteoarthritis Initiative without ROA at baseline that developed ROA during a 4-year interval. Semi-quantitative MRI scoring of osteophytes and cartilage damage was performed at the time point when ROA was diagnosed, defined as Kellgren-Lawrence grade ≥ 2, using the MOAKS instrument. Read More

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Can MRI-defined osteoarthritis features explain anterior knee pain in individuals with, or at risk for, knee osteoarthritis? The MOST Study.

Arthritis Care Res (Hoboken) 2021 Mar 25. Epub 2021 Mar 25.

University of Delaware, (Department of Physical Therapy), Newark, USA.

Objective: The lack of strong association between knee osteoarthritis (OA) structural features and pain continues to perplex researchers and clinicians. Evaluating the patellofemoral joint in addition to the tibiofemoral joint alone has contributed to explaining this structure-pain discordance, hence justifying a more comprehensive evaluation of whole-knee OA and pain. We therefore evaluated the association between patellofemoral and tibiofemoral OA features with localized anterior knee pain (AKP) using two study designs. Read More

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Bicompartmental, medial and patellofemoral knee replacement might be able to maintain unloaded knee kinematics.

Arch Orthop Trauma Surg 2021 Mar 12. Epub 2021 Mar 12.

KniePraxis Straubing, Bahnhofplatz. 1, 94315, Straubing, Germany.

Introduction: Unicompartmental knee arthroplasty (UKA) and total knee arthroplasty (TKA) are standard procedures for treating knee joint arthritis. Neither UKA nor TKA seems to be optimally suited for patients with bicompartmental osteoarthritis that affects only the medial and patellofemoral compartments. A bicompartmental knee arthroplasty (BKA) was designed for this patient group. 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 Mar 8. 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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Patellofemoral Replacement With Tibial Tubercle Osteotomy.

Arthrosc Tech 2021 Jan 20;10(1):e67-e72. Epub 2021 Jan 20.

Steadman Hawkins Clinic of the Carolinas, Prisma Health-Upstate, Greenville, South Carolina, U.S.A.

Patellofemoral arthritis that is due to patellofemoral instability or chronic patellofemoral maltracking can be a difficult treatment problem. Isolated patellofemoral arthroplasty (PFA) is a good option that preserves bone and can more accurately reproduce native kinematics when compared with total knee arthroplasty. Newer PFA designs have demonstrated improved survivorship, although survivorship has not shown equivalence with total knee replacement. Read More

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January 2021

Clinical Efficacy of Platelet-Rich Plasma Injection and Its Association With Growth Factors in the Treatment of Mild to Moderate Knee Osteoarthritis: A Randomized Double-Blind Controlled Clinical Trial As Compared With Hyaluronic Acid.

Am J Sports Med 2021 02;49(2):487-496

Department of Orthopedic Surgery, Himchan Hospital, Busan, Republic of Korea.

Background: Although platelet-rich plasma (PRP) has potential as a regenerative treatment for knee osteoarthritis, its efficacy varies. Compositional differences among types of PRP could affect clinical outcomes, but the biological characterization of PRP is lacking.

Purpose: To assess the efficacy of intra-articular PRP injection in knee osteoarthritis as compared with hyaluronic acid (HA) injection and to determine whether the clinical efficacy of PRP is associated with its biological characteristics. Read More

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February 2021

Do Bone-Patellar Tendon-Bone ACL-Reconstructed Knees Have More Signs of Patellofemoral Posttraumatic Osteoarthritis Than Their Uninjured Contralateral Knees at 2 Years?

Orthop J Sports Med 2021 Jan 12;9(1):2325967120973050. Epub 2021 Jan 12.

Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio, USA.

Background: The prevalence of patellofemoral joint (PFJ) osteoarthritis ranges from 8% to 47% at 7 to 10 years after anterior cruciate ligament reconstruction (ACLR) using bone-patellar tendon-bone (BTB) autograft. In performing BTB ACLR, some hypothesize that either trauma caused by harvest of the BTB autograft or altered biomechanics contributes to PFJ posttraumatic osteoarthritis.

Purpose/hypothesis: To determine whether knees with ACLR using a BTB autograft show early signs of posttraumatic osteoarthritis as compared with the contralateral uninjured knee 2 years after ACLR. Read More

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January 2021

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

In vivo Compositional Changes in the Articular Cartilage of the Patellofemoral Joint following Anterior Cruciate Ligament Reconstruction.

Arthritis Care Res (Hoboken) 2021 Jan 18. Epub 2021 Jan 18.

University of North Florida, 1 UNF Drive, Jacksonville, FL, 32224, USA.

Objective: To compare T1ρ relaxation times of the medial and lateral regions of the patella and femoral trochlea at 6 and 12 months post-anterior cruciate ligament reconstruction (ACLR) on the ACLR and contralateral limb. Greater T1ρ relaxation times are associated with a lesser proteoglycan density of articular cartilage.

Methods: Twenty individuals (11 males, 9 females; age=22±3. Read More

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January 2021

[Expert consensus on surgical treatment of patellofemoral osteoarthritis].

Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2021 Jan;35(1):1-7

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Patellofemoral osteoarthritis (PFOA) is one of the most common causes of anterior knee pain in middle-aged and elderly population. In general, elementary therapy and drug therapy are the preferred choices for PFOA management. However, for those who cannot achieve satisfactory effectiveness with standard non-surgical treatment, surgical therapy stands as an alternative treatment. Read More

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January 2021

Cartilage Disease of the Patellofemoral Joint: Realignment, Restoration, Replacement.

Instr Course Lect 2021 ;70:289-308

Chondral lesions of the patellofemoral joint are common, and when symptomatic they can be difficult to manage. Not only are there various degrees of injury with multiple etiologies, but patellofemoral anatomy is complex and the patient's lower extremity alignment may contribute to the pathology. Treatment depends on the location, size, and depth of the lesion and may require realignment or concomitant stabilizing procedures. Read More

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January 2021

Partial Knee Arthroplasty: The State of the Art.

Instr Course Lect 2021 ;70:235-246

Unicompartmental knee arthroplasty and patellofemoral arthroplasty were pioneered in the 1970s but abandoned by most in favor of total knee arthroplasty because of inconsistent early outcomes. Advancements in implant design, instrumentation, indications, and surgical techniques have enhanced results and led to a resurgence in both unicompartmental knee arthroplasty and patellofemoral arthroplasty for appropriate candidates. In appropriately selected patients, current implants and techniques provide surgeons the resources to carry out a surgical procedure that is simpler to perform and easier to recover from. Read More

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January 2021

Multivariable modeling of biomarker data from the phase 1 Foundation for the NIH Osteoarthritis Biomarkers Consortium.

Arthritis Care Res (Hoboken) 2021 Jan 9. Epub 2021 Jan 9.

Duke Molecular Physiology Institute and Division of Rheumatology, Department of Medicine, Duke University School of Medicine, Durham, NC, 27701, USA.

Objective: To determine the optimal combination of imaging and biochemical biomarkers to predict knee osteoarthritis (OA) progression.

Methods: Nested case-control study from the FNIH OA Biomarkers Consortium of participants with Kellgren-Lawrence grade 1-3 and complete biomarker data (n=539 to 550). Cases were knees with radiographic and pain progression between 24-48 months from baseline. Read More

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January 2021

Long-term Effect of a Single Subcritical Knee Injury: Increasing the Risk of Anterior Cruciate Ligament Rupture and Osteoarthritis.

Am J Sports Med 2021 02 30;49(2):391-403. Epub 2020 Dec 30.

Murray Maxwell Biomechanics Laboratory, Institute of Bone and Joint Research, Kolling Institute, Northern Sydney Local Health District, Faculty of Medicine and Health, Northern Clinical School, University of Sydney, St Leonards, Australia.

Background: Rupture of the anterior cruciate ligament (ACL) is a well-known risk factor for the development of posttraumatic osteoarthritis (PTOA), but patients with the "same injury" can have vastly different trajectories for the onset and progression of disease. Minor subcritical injuries preceding the critical injury event may drive this disparity through preexisting tissue pathologies and sensory changes.

Purpose: To investigate the role of subcritical injury on ACL rupture risk and PTOA through the evaluation of pain behaviors, joint mechanics, and tissue structural change in a mouse model of knee injury. Read More

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February 2021

[Patellofemoral inlay implants-an innovation in patellofemoral joint arthroplasty?]

Orthopade 2021 Feb;50(2):136-142

Abteilung für Sportorthopädie, Klinikumrechts der Isar, TU München, Ismaninger Str. 22, 81675, München, Deutschland.

Isolated arthrosis of the patellofemoral joint is a rare and complex disease. After conservative therapy has been exhausted, the orthopedist has various soft-tissue and bone reconstructive procedures as well as cartilage regenerative procedures at his hands. In cases of failed or unsatisfactory therapy, patellofemoral arthroplasty continues to be controversially discussed as an alternative therapy. Read More

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February 2021

Learning Gait Modifications for Musculoskeletal Rehabilitation: Applying Motor Learning Principles to Improve Research and Clinical Implementation.

Phys Ther 2021 Feb;101(2)

Motion Analysis and Biofeedback Laboratory, University of British Columbia, Vancouver, BC, Canada.

Gait modifications are used in the rehabilitation of musculoskeletal conditions like osteoarthritis and patellofemoral pain syndrome. While most of the research has focused on the biomechanical and clinical outcomes affected by gait modification, the process of learning these new gait patterns has received little attention. Without adequate learning, it is unlikely that the modification will be performed in daily life, limiting the likelihood of long-term benefit. Read More

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February 2021

Controversy: supporting patellar resurfacing in total knee arthroplasty - do it.

EFORT Open Rev 2020 Nov 13;5(11):785-792. Epub 2020 Nov 13.

Sezione di Chirurgia Protesica ad Indirizzo Robotico - Unità di Traumatologia dello Sport, U.O Ortopedia e Traumatologia Fondazione Poliambulanza, Brescia, Lombardy, Italy.

Patellar resurfacing during total knee arthroplasty remains a controversial topic.Some surgeons routinely resurface the patella to avoid the increased rates of postoperative anterior knee pain and reoperation for secondary resurfacing, whilst others selectively resurface based on the presence of preoperative anterior knee pain, damaged articular cartilage, inflammatory arthritis, isolated patellofemoral arthritis, and patellar subluxation and/or maltracking. A third group of surgeons never resurface the patella. Read More

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November 2020