Active clinical trials for "Patellar Dislocation"

Adult habitual dislocation of the patella is a common dislocation of the patella. The range of lesions is wide and the severity is high. Clinical diagnosis and treatment are difficult. In clinical work, misdiagnosis and treatment are not targeted at pathological mechanisms. This leads to irregular diagnosis and treatment, high failure rate and revision rate, and patients undergoing multiple operations. The project team developed a "four-in-one" surgical technique centered on "tibial tuberosity osteotomy and proximal displacement" in the preliminary research, which overcomes the disadvantages of traditional knee extension surgery and is suitable for adults. Early research Shows safe and effective clinical efficacy. The purpose of this application project is to take independent innovation of core surgical technology as the lead, adopt a two-way cohort study method, compare the clinical efficacy of the new "four-in-one" technology and traditional soft tissue surgery in the treatment of adult habitual patellar dislocation, and analyze and formulate adult habituation Comprehensive and systematic solutions for patella dislocation, relying on this scientific research project to conduct multi-center and large-sample clinical case studies, and evaluate the effectiveness and safety of independent innovative technologies through standardized medical research methods to improve the surgical treatment of adult habitual patella dislocation Success rate, reduce recurrence rate and failure rate, improve the level of clinical treatment of the disease, and finally put forward a special clinical diagnosis and treatment system for the disease in the international academic community.

Knee immobilization in near extension has been proposed as a nonoperative treatment for primary traumatic patellar dislocation, although there exist no prospective studies regarding the method of immobilization. The objective of this prospective randomized study was to compare the clinical outcome after nonoperative treatment with restricted vs. free range of motion (ROM) for primary traumatic patellar dislocation.

The study enrolled 33 patients with confirmed recurrent patellar dislocation, including 6 patients with bilateral involvement. In the study group, both side hamstring muscle were evaluated at the velocities of 60 and 180 deg/s for the following parameters: peak torque, torque in 30 degree of the knee flexion, angle of peak torque and peak torque hamstring to quadriceps ratio (H/Q ratio).

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.

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.

The principal objective of the study is to find out which everyday activities make the kneecap unstable in people with patellofemoral instability. Analysing how a patient with an unstable kneecap walks will help us to determine if surgery is successful in these patients by seeing if better scores on patient questionnaires are found in patients following surgery and whether these patients also have a better pattern of walking. The investigators aim to use cameras and pressure pads to see how patients walk before and after surgery and see how this compares to patient scores on the questionnaires. If the investigators find that patients walk better after surgery they can justify that surgery is worthwhile for the patient and cost effective for the NHS.

The activation of the knee extensors in adults after patella dislocation. The kneecap can dislocate due to an accident or also only due to an interior turn in the stretched knee joint out of its sliding bearing. E. Arendt (Arendt 2002) wrote an overview work, in which possible causes and working methods to the patella dislocation are discussed. Despite almost one hundred quotations the authors are not able find the causes and the possible treatment concepts. The study will examined healthy adults (25 female and 25 men) and 25 patients with patella dislocation by a routine applied clinical gait analysis and surface EMG (after the European SENIAM guidelines) iin the Laboratory for Gait Analysis Basel of the Children's University Hospital Basel. The combination of gait analysis and the surface EMG with Wavelet analysis may objectify possible reasons for a patella dislocation

Patellar instability (recurrent patellar dislocation) can occur at any age. It is most often seen in young subjects, especially among adolescents. It is commonly accompanied by anatomical factors. A new factor not described in bibliographic sources and characterized by an external torsion of the tibial tuberosity is frequently found in patients with patellar instability thanks to MRIs. This does not seem to be the case when there is no patellar pathology. A statistical study is needed to assess this rotary anomaly. Validate the predictive benefits when measuring the torsion of tibial tuberosity in cases with recurrent patellar dislocation.

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