The short answer is that while diagnosing a knee injury without in-person evaluation can be tricky, most “popping” is caused by tightness in a connective tissue called the patellar retinaculum, and ...

Boston Celtics center Kristaps Porzingis suffered a torn medial retinaculum allowing dislocation of the posterior tibialis tendon in his left leg at 3:27 of the third quarter of Game 2. The medial ...