Patellofemoral instability: Quantitative evaluation of predisposing factors by MRI
نویسندگان
چکیده
منابع مشابه
Patellofemoral disorders and instability.
Originally the main idea was to obtain a stable patella, i.e., to stabilize the "slipping patella". In the past many conditions like patella alta, ligamentous laxity, PF bone hypoplasia, weakness of the quadriceps muscle, genu valgum or genu recurvatum were thought to predispose to patellar instability. For a long period muscle exercises were instituted to strengthen the weak m.vastus medialis ...
متن کاملChronic patellofemoral instability.
The patellofemoral joint is intrinsically unstable because the tibial tubercle lies lateral to the long axis of the femur and the quadriceps muscle, and the patella is therefore subject to a laterally directed force. This apparent ‘design fault’ is minimised by the resistance of the lateral lip of the trochlea to lateral movement of the patella during flexion (Brattström 1964). In full extensio...
متن کاملSurgical Treatment of Patellofemoral Instability
OBJECTIVE To describe functional outcomes following surgical treatment of patients with patellofemoral instability submitted to patellar realignment. METHODS This was a retrospective study evaluating 34 operated knees for patellofemoral instability between 1989 and 2004. The patients were evaluated in the late postoperative period when a functional questionnaire was applied. RESULTS After a...
متن کاملPatellofemoral instability: classification and imaging.
Patellofemoral disorders must be approached through an appropriate process of diagnostic framing, performed using language that is, as far as possible, unequivocal and a validated and organic classification system. At present, the classification proposed by the Lyonnaise school, which fulfills these requirements, is the most complete. This classification divides patellofemoral disorders into th...
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ژورنال
عنوان ژورنال: The Egyptian Journal of Radiology and Nuclear Medicine
سال: 2016
ISSN: 0378-603X
DOI: 10.1016/j.ejrnm.2016.09.020