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Recurrent Patellar Dislocation clinical trials

View clinical trials related to Recurrent Patellar Dislocation.

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NCT ID: NCT05763108 Completed - Clinical trials for Recurrent Patellar Dislocation

Clinical Significance and Coexistence of Polymorphisms of Individual Collagen-coding Genes

Start date: April 1, 2022
Phase:
Study type: Observational

The purpose of this study is to assess correlation between recurrent patella dislocation and genetic polymorphism rs1800012 of the COL1A1 Gene and rs12722 of the COL5A1 Gene.

NCT ID: NCT05184439 Completed - Clinical trials for Patellofemoral Osteoarthritis

Evaluation of Adductor Magnus Tenodesis in Patients With Recurrent Patellar Dislocation.

Start date: November 25, 2021
Phase:
Study type: Observational

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.

NCT ID: NCT04556799 Not yet recruiting - Osteotomy Clinical Trials

The Clinical Results of Derotational Osteotomy Based on 3D Osteotomy Template for Treatment of Recurrent Patellar Dislocation Combined With Patellofemoral Maltracking

Start date: October 1, 2020
Phase: N/A
Study type: Interventional

For severe recurrent patellar dislocation with poor patellar maltracking, derotation osteotomy is an effective clinical treatment. However, derotation osteotomy requires very high requirements for the surgeon. It is necessary to determine the osteotomy surface, control the axis and complete internal fixation in three dimensions. The deviation of the osteotomy surface may cause deformities such as postoperative knee valgus, knee hyperextension, or restricted extension. The hypothesis of this study is to design a 3D osteotomy template for derotation osteotomy with the aid of computer-assisted simulated surgery. Compared with traditional osteotomy, it can effectively improve the treatment effect of recurrent patellar dislocation due to poor patellar maltracking. The incidence of postoperative knee valgus shortens the operation time and reduces the number of intraoperative fluoroscopy. This study intends to adopt a randomized controlled study, and the selection criteria are adolescent patients with recurrent patellar dislocation, aged >14 years, with a positive J sign. The experimental group used mimics 20.0 software to reconstruct the three-dimensional model of the patient based on the full-length images of the lower limbs in the weight-bearing position and the CT of the hip, knee and ankle before the operation. The osteotomy template was designed and 3D printing technology was used to make the osteotomy template for intraoperative osteotomy. The control group used traditional de-rotation techniques. The knee joint range of motion, patella stability, residual rate of J-sign, knee valgus angle, femoral anteversion angle, gait analysis, etc. were compared between the two groups after surgery, and the differences between the two surgical techniques were evaluated

NCT ID: NCT04456881 Recruiting - Clinical trials for Recurrent Patellar Dislocation

Arthroscopic Clinical Study of Double Bundle Anatomical Reconstruction of Medial Patellofemoral Ligament

Start date: January 1, 2020
Phase: N/A
Study type: Interventional

Objective: To study the clinical effect of double-beam anatomical reconstruction of medial patellofemoral ligament under arthroscopy. Methods: Double-beam anatomical reconstruction of medial patellofemoral ligament was performed under arthroscopy in patients admitted to our hospital for treatment of recurrent patellar dislocation. Carry out preoperative and postoperative evaluations, and conduct preoperative and postoperative comparative studies to clarify the clinical effect of the procedure. Expected results: Arthroscopic double-beam anatomical reconstruction of the medial patellofemoral ligament can effectively restore the stability of the patella and the motor function of the knee joint. Expected conclusion: Arthroscopic double-beam anatomical reconstruction of the medial patellofemoral ligament is an effective minimally invasive technique. Keywords: knee joint; medial patellofemoral ligament; double-beam anatomical reconstruction; arthroscopy

NCT ID: NCT03983213 Completed - Clinical trials for Patellar Instability

The Comprehensive Assessment in Children After Surgical Treatment of Patellar Recurrent Dislocation.

Start date: May 28, 2019
Phase:
Study type: Observational

The aim of this prospective study is to assess extension apparatus function of the knee based on clinical, radiological, isokinetic and gait analysis data in patients after surgical treatment. There will be used physical examination, Lysholm-Tegner and Kujala scale for clinical assessment. Merchant and lateral X-ray pictures will be analysed for patellar position verification along with isokinetic and gait evaluation to produce conclusions referring to efficacy of the treatment. All subjects included in the study were treated with mpfl reconstruction. Follow-up longer than 2 years in all cases, about 45 patients included.