Patellofemoral instability (PFI) is a multifactorial condition typically observed following initial traumatic patellar dislocation. PFI depends on various factors such as limb alignment, bony structure, and the integrity of static and dynamic stabilizers. Patients with below-knee amputation have a higher risk of experiencing PFI. This report describes a successful case involving a patient with patellofemoral instability and a transtibial amputation. The patient was effectively treated with distal realignment and patellar stabilization achieved by reconstructing the medial patellofemoral complex (MPFC).
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Acta Ortop Mex
January 2025
Hospital Israelita Albert Einstein, Sao Paulo, Brazil. Department of Orthopedics and Traumatology, University of Sao Paulo, Sao Paulo, Brazil.
Patellofemoral instability (PFI) is a multifactorial condition typically observed following initial traumatic patellar dislocation. PFI depends on various factors such as limb alignment, bony structure, and the integrity of static and dynamic stabilizers. Patients with below-knee amputation have a higher risk of experiencing PFI.
View Article and Find Full Text PDFBiomimetics (Basel)
January 2025
Department of Orthopedic Surgery, Wakamatsu Hospital of University of Occupational and Environmental and Health, 1-17-1, Hamamachi, Wakamatsu, Kitakyushu-city 808-1264, Fukuoka, Japan.
While several studies have reported short-term clinical outcomes after medial patellofemoral ligament (MPFL) repair with suture tape augmentation, there is still a dearth of knowledge regarding midterm clinical outcomes. This study aimed to evaluate the midterm clinical outcomes of MPFL repair with suture tape augmentation in patients with patellar dislocation. We retrospectively reviewed the clinical records of patients who underwent MPFL repair with suture tape augmentation for at least one episode of patellar dislocation between 2015 and 2020.
View Article and Find Full Text PDFAm J Sports Med
January 2025
Department of Orthopaedics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.
Background: Trochlear dysplasia is a consistent risk factor for recurrent patellofemoral instability (PFI), but there is limited understanding of how the trochlea develops during growth. The aim of this study was to evaluate serial magnetic resonance imaging (MRI) studies performed in skeletally immature patients with and without PFI to characterize changes in trochlear anatomy over time.
Hypothesis: PFI leads to progressive worsening of trochlear dysplasia over time.
Knee Surg Sports Traumatol Arthrosc
January 2025
Clinical Research Department, Sydney Knee Specialists, Kogarah, New South Wales, Australia.
Purpose: In functionally aligned (FA) total knee arthroplasty (TKA), femoral component rotation (FCR) is personalised to optimise flexion gap balance. As axial malalignment has been attributed to patellofemoral complications, this study assessed FA FCR in relation to the surgical transepicondylar axis (TEA) and early implant survivorship.
Methods: We analysed 446 robotic-assisted primary TKAs in 393 patients using FA with preresection gap balancing.
Knee Surg Sports Traumatol Arthrosc
January 2025
Sports Orthopedic Research Center-Copenhagen (SORC-C), Department of Orthopedic Surgery, Copenhagen University Hospital, Amager-Hvidovre, Denmark.
Purpose: The treatment of patellar dislocation is tailored based on the presence or absence of osseous risk factors. The purpose of this scoping review was to investigate whether existing research addresses patient differences by mapping the use of osseous risk factors and patient-reported outcome measures (PROMs) in studies investigating the treatment of patellar dislocation.
Methods: This study was a scoping review conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analysis extension for Scoping Reviews.
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