The diagnosis is usually clear from the history. Examination may disclose the patella still lying lateral to the joint, but more usually the dislocation has been reduced and there is a swollen knee ...

Eighty patients were diagnosed on MRI as having had transient lateral patellar dislocation. Their mean age was 23.9 years (SD 7.5). Forty patients (50.0%) had co-existent MCL injuries. These injuries ...