Most common acute dislocation of knee; lateral displacement of patella. Mechanism: valgus stress + external rotation with knee flexion. Clinical: sudden giving way, patella displaced laterally, hemarthrosis. Imaging: X-ray for osteochondral fracture; MRI for MPFL tear, loose bodies. Treatment: reduction + immobilization, physiotherapy; surgery if recurrent or osteochondral fracture.
What is the most common direction of patellar dislocation in acute cases?
What is the primary static restraint to lateral patellar displacement?
Which imaging modality is most useful for assessing a suspected MPFL tear after an acute patellar dislocation?
What is the typical mechanism of injury for an acute patellar dislocation?
What is the first-line treatment for an acute patellar dislocation?
What percentage of first-time patellar dislocators are likely to experience a recurrence?
What anatomical feature is a significant risk factor for recurrent patellar dislocation?
Which examination finding is most characteristic of an acute patellar dislocation?
When assessing the TT-TG distance, what measurement is considered abnormal?
Which of the following is a common symptom reported by patients after an acute patellar dislocation?
