Knee Disorders
A 14-year-old female gymnast presents after her third lateral patellar dislocation in 18 months. Examination reveals a positive apprehension test, increased passive patellar translation, and ligamentous laxity (Beighton score 6/9). Lateral radiograph shows a "crossing sign" and MRI confirms MPFL disruption from the femoral attachment and Dejour Type B trochlear dysplasia. Regarding pediatric patellar instability and the medial patellofemoral ligament (MPFL):
Mark each as TRUE or FALSE
The MPFL is the primary restraint to lateral patellar translation in the first 20-30 degrees of knee...
MPFL injury patterns in acute patellar dislocation include: femoral-sided avulsion (most common in s...
First-time patellar dislocations in skeletally immature patients always require surgical MPFL recons...
Risk factors for recurrent patellar instability include: trochlear dysplasia (most important anatomi...
Non-operative management of first-time patellar dislocation includes: brief immobilization followed ...
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Click T (True) or F (False) for each option