oaded Knee MRI of the patellofemoral joint in patients with patella instability using prospective motion correctio

Not Applicable

Conditions: M22.0
M22.1
Recurrent dislocation of patella
Recurrent subluxation of patella

Registration Number: DRKS00011408

Lead Sponsor: Klinik für Orthopädie und Unfallchirurgie Uniklinik Freiburg

Brief Summary: Not available

Detailed Description: Not available

Recruitment & Eligibility

Status: Pending

Sex: All

Target Recruitment: 60

Inclusion Criteria

Patients age >18 and < 55 years
Patients suffering from persistent subjective or objective patellofemoral instability after Patellaluxation
Patients undergoing operative Treatment for patella stabilization

Exclusion Criteria

Knee arthrosis Grade 2 (Kellgren and Lawrence system)
Chronic drug abuse
Patients carrying, artifical heart waves, heart pacemaker, other ferromagnetic implants

Study & Design

Study Type: interventional

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
4 to 6 weeks prior surgery and 3 months after surgery the following endpoints will be evaluated:<br>Size of patellofemoral cartialge contact area will be determined using MRI at 0,10,20,30° of flexion.

Secondary Outcome Measures

Name	Time	Method
4 to 6 weeks prior surgery and 3 months after surgery the following endpoints will be evaluated:<br>•Influence of patellar stabilization on patellofemoral kinematics, determined using MRI at 0,10,20,30° of flexion<br>•Measure of cartilage compression,determined using MRI at 0,10,20,30° of flexion<br>•Measure of cartialge relaxation times,determined using MRI at 0,10,20,30° of flexion<br><br>