Operative Repair of Medial Patellofemoral Ligament Injury Versus Knee Bracing in Acute First-Time Traumatic Patellar Dislocation: A Systematic Review and Meta-Analysis.

Acute first-time traumatic patellar dislocation is a prevalent knee injury, particularly in adolescents, often managed conservatively with knee bracing. Recently, medial patellofemoral ligament (MPFL) reconstruction has gained popularity for its potential benefits in reducing redislocation rates and enhancing functional outcomes. This systematic review and meta-analysis compared the outcomes of MPFL reconstruction versus knee bracing for managing acute first-time traumatic patellar dislocation.

Impact of the Number of Patellar Dislocations on Outcomes of Isolated Medial Patellofemoral Ligament Reconstruction.

Background: Patellar dislocation is a common knee injury and up to 35% of those who dislocate the patella can develop recurrent patellar instability. In the setting of recurrent instability, medial patellofemoral ligament (MPFL) reconstruction is often performed to restore knee stability. There has been recent interest in patient and surgical factors that influence outcomes of MPFL reconstruction.

Extension patellar engagement index: a new measurement of patellar height.

Introduction: Patellar instability is a multifactorial pathology requiring precise evaluation of its contributing factors, particularly patella alta. Patellotibial height measurement indexes, such as the Caton-Deschamps index, have the disadvantage of being referenced to the tibia. Patellotrochlear indexes are more appropriate but fail to account for variable knee flexion during magnetic resonance imaging (MRI).

Treatment of patellar luxation with polyethylene sulcal ridge prostheses in 44 feline stifles: a retrospective study.

Objectives: The aim of this study was to assess the complication rates and long-term outcomes, as well as to refine case selection criteria for cats undergoing trochlear ridge augmentation (TRA) using an ultra-high molecular weight polyethylene implant (UHMWPEI) for the treatment of patellar luxation (PL).

Methods: The clinical records from two referral veterinary hospitals were searched for cases that fitted defined inclusion criteria. A short-term assessment was based on examination and radiography at 8 weeks postoperatively.

Is fascia lata a viable graft for MPFL reconstruction? An overview of surgical technique and scoping literature review.

Lateral patellar dislocation is irrefutably one of the most common knee injuries, while subsequent medial patellofemoral ligament (MPFL) damage requires proper orthopedic care. Treatment of these injuries is regularly associated with the need for MPFL reconstruction surgery. This operation, often in combination with other procedures, can result very fruitful in restoring knee kinematics.

Predicting two-year return-to-sport failure after medial patellofemoral ligament reconstruction in patellar dislocation patients with bone abnormalities.

Purpose: To develop a comprehensive and validated personalized scoring system based on anatomical characteristics to predict the probability of failure to return to sport after medial patellofemoral ligament reconstruction in patients with patellar dislocation.

Methods: 312 patients with medial patellofemoral ligament reconstruction in our hospital from 2013 to 2023 were included. Demographic and anatomical characteristics were collected retrospectively.

Evaluating tibial rotation in recurrent patellar dislocation with four-dimensional computed tomography.

Objective: This study is to investigate the three-dimensional (3D) kinematic changes in the knee joint in patients with recurrent patellar dislocation using four-dimensional computed tomography (4DCT) imaging and the 3D-3D surface registration technique.

Materials And Methods: Ten knees from nine patients with recurrent patellar dislocation and seven knees from seven controls (unaffected side of patients with unilateral anterior cruciate ligament injury) were analyzed using 4DCT. The patients were asked to extend their knees from 60° of flexion to full extension for 10 s in the CT gantry.

Knee dislocation with concomitant patellofemoral dislocation: A systematic review.

Background: There is no consensus treatment for knee dislocations with associated patellar dislocation. This systematic review provides an overview of current treatments and the authors preferred treatment algorithm. Knee dislocation with concomitant patellar dislocation is a rare occurrence and there is no standard of care for these injuries.

Patellofemoral Instability in the Pediatric and Adolescent Population: From Causes to Treatments.

Background: Patella instability is one of the most common knee injuries in the adolescent patient. There are several pathoanatomic risk factors which should be assessed via several modalities, including X-rays, magnetic resonance imaging (MRI), or even CT scan.

Objectives: We intend to review these risk factors along with the nonsurgical and surgical techniques used to prevent recurrent dislocations.

Anatomic physeal-sparing MPFL reconstruction in skeletally immature patients shows favourable outcomes at a minimum of 24-month follow-up.

Purpose: Recurrent patellar dislocation is a prevalent orthopaedic issue among active paediatric and adolescent populations. Bony surgical procedures are not recommended in growing patients; therefore, the focus of surgery is on restoring the medial patellar ligaments, with different reconstructive techniques available. This retrospective case series focuses on the 2-year outcomes of medial patellofemoral ligament (MPFL) reconstruction in skeletally immature patients with open physis.

[Research progress on femoral attachment positioning during medial patellofemoral ligament reconstruction].

Objective: To review research progress on femoral attachment positioning during medial patellofemoral ligament (MPFL) reconstruction, so as to provide a reference for accurate positioning in clinic.

Methods: The literature at home and abroad on femoral attachment positioning during MPFL reconstruction was extensively reviewed and summarized.

Results: MPFL is the main ligament that restricts patellar outward migration, so MPFL reconstruction is the main treatment for patellar dislocation, but the accuracy of intraoperative femoral attachment positioning will significantly affect the effectiveness.

Outcomes After Total Knee Arthroplasty in Patients With a History of Patella Fracture: A Propensity Score-Matched Analysis.

Background: Posttraumatic osteoarthritis is a common indication for total knee arthroplasty (TKA). The purpose of this study was to evaluate the association between a history of patella fracture and postoperative complication rates after TKA.

Methods: Patients diagnosed with a patella fracture before undergoing TKA were identified from a large national database and matched to a control cohort using propensity scoring.

Patellar morphology is different in patellofemoral instability: An MRI comparative case-control study.

Purpose: Although patellofemoral instability (PFI) affects both femoral and patellar compartments, literature provided little attention for the patellar morphology contribution on PFI. This study evaluates the patellar morphology patterns on MRI to establish their contribution in PFI.

Methods: This study retrospectively analyzes patellar MRI and X-ray measurements performed between 2018 and 2022.

Primary Total Knee Arthroplasty for Treating Osteoarthritic Knees with Neglected Patellar Dislocation.

: Neglected patellar dislocation in the presence of end-stage osteoarthritis (OA) is a rare condition characterized by the patella remaining laterally dislocated without reduction. Due to the scarcity of reported cases, the optimal management approach is still uncertain. However, primary total knee arthroplasty (TKA) can serve as an effective treatment option.