Adolescent with large patellar osteochondral fracture, loose body in patellar instability

A 16-year-old female high school junior with a history of recurrent patellar instability presented with left knee pain following a patellar dislocation event.Two weeks earlier, she stepped onto a slippery deck, causing her left knee to twist internally and her patella to dislocate laterally. After the incident, she reported that her patella spontaneously reduced, but she had been unable to