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NCT04849130
This study is to evaluate whether the dynamic Medial Patellofemoral Ligament (MPFL) reconstruction as described by Becher is a successful operation technique to prevent patella instability and restore quality of life. It is to assess and compare clinical and functional outcomes of dynamic and static medial patellofemoral ligament reconstruction
NCT06932900
There are several treatment options for patellofemoral instability, but no established guidelines currently exist. An important step toward developing a consensus is to examine the influence of each intervention through the collection of both subjective and objective outcomes. Most outcome measures commonly used for knee pathologies are primarily designed to monitor degenerative conditions (e.g., osteoarthritis) or ligamentous instability (e.g., anterior cruciate ligament rupture). Very few questionnaires are specific to patellar instability, a condition characterized by distinct signs and symptoms compared to other knee disorders. The Banff Patellar Instability Instrument (BPII) was developed with this gap in mind, in accordance with the Consensus-based Standards for the Selection of Health Measurement Instruments (COSMIN) criteria. This condition-specific tool is designed to subjectively assess the functional impact of patellofemoral instability on patients' quality of life, which is the most important factor in evaluating treatment success. Currently, there is no validated French-language outcome measure specific to patellofemoral instability. To improve patient care, the availability of such a validated tool in French is essential, both for clinical use and for conducting future research. To address this issue, the primary objective of this study is to translate the Banff Patellar Instability Instrument 2.0 (BPII 2.0) into French, following the three-step process described in the IQOLA project and in accordance with the guidelines outlined by the American Academy of Orthopaedic Surgeons (AAOS), and to evaluate its validity in a French-speaking population. Research Question Is the French version of the BPII 2.0 a valid tool to assess function in French-speaking patients diagnosed with patellofemoral instability? Specific Objectives To translate the Banff Patellar Instability Instrument 2.0 into French using a dual forward-backward translation process. To evaluate the psychometric properties of the French version of the BPII 2.0, including its reliability and validity.
NCT05184439
Between 2010 and 2012, 33 children and adolescents (39 knees) with recurrent patellar dislocation were treated with MPFL reconstruction using the adductor magnus tendon.The aim of the study is to assess the effectiveness of this surgical procedure in long follow-up. The outcomes will be evaluated functionally (Lysholm knee scale, the Kujala Anterior Knee Pain Scale, and isokinetic examination) and radiographically (Caton-Deschamps index, sulcus angle, congruence angle, and patellofemoral angle). This is a continuation of the research published in 2015 with longer follow-up at least 10 years. All available patients will be evaluated with the same protocol, using the same methods and devices. Functional outcome is planned to be measured with scales as above. In radiological assessment Merchant and lateral knee weight bearing view and additionally MRI will be performed. Isokinetic test will be performed in two speeds of 60 and 180 deg/s. Most of important isokinetic parameters such as peak torque, torque in 30 deg, time to peak torque, peak torque to body weight both for quadriceps and hamstrings will be measured and compared to those from former research. Dedicated statistical test will be used for both: analysis of present status and differences from former results.
NCT04438109
In a single surgical center, 213 consecutive patients with 221 knees were surgically treated for recurrent lateral patellar dislocation between 07/2010 and 12/2016. All patients obtained dynamic reconstruction of the MPFL with detachment of the gracilis tendon at the pes anserinus while maintaining the proximal origin at the gracilis muscle. Patellar fixation was performed by oblique transpatellar tunnel transfer and tenodesis screw. Follow-up data including Kujala-, BANFF- and Norwich patellar instability score as well as Return-to-Sport and pain level were collected at a minimum follow-up of 2 years
NCT04378491
The purpose of this study is to evaluate the functional and clinical outcome of this new lengthening osteotomy of the lateral trochlea in patients with patella instability, trochlear dysplasia Dejour type A or B, short lateral articular trochlea quantified by the lateral condyle index and presence of a lateral trochlear bump.
NCT02998372
Computational simulation will be performed to represent motion of knees with a dislocating kneecap. Common surgical treatment methods will be simulated and anatomical parameters commonly associated with the dislocation will be varied in order to characterize the most appropriate surgical approach as a function of knee anatomy.
NCT00816647
The operative management of chronic patellar instability has been controversial. Medial patellofemoral ligament reconstruction has gained success recently and might be superior to other soft-tissue procedures. The objective of this prospective study was to compare the clinical outcome after medial patellofemoral ligament reconstruction compared with medial reefing for chronic patellar instability.