Causes:
Chondral or osteochondral fractures
Osteochondritis dessicans
OA
RA
Gout
CPPD
CHAP
Osteonecrosis
Synovial osteochondromatosis
Common locations:
Suprapatellar recess (associated with suprapatellar plica)
Popliteus hiatus
Meniscal recess
Intercondylar notch
References:
1.Resnick et al. Internal dergangements of joints. 2nd edition. Saunders Elsevier. 2007
