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.
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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
presence of a recurrent patellar dislocation/ radiological reduction of the trochlear bump postoperative by plain radiograph of the knee/ lateral view
Timeframe: at Baseline
presence of a recurrent patellar dislocation/ radiological reduction of the trochlear bump postoperative by Skyline patellar view
Timeframe: at Baseline
(Change in) Lateral condyle index assessed by MRI of the knee
Timeframe: at Baseline