<prompt> Snowstorm appearance of knee joint with multiple loose bodies is seen in?chondromalacia patellaeEwings sarcoma of knee jointFracture involving articular surfaceSynovial chondromatosis  <response>: ANSWER: D Synovial chondromatosisREF: The Journal of bone and joint surgery: British volume: Volume 71, Pages 549-912, http: knee:Seen in Synovial chondromatosisTraumatic etiologyJoint effusionNumerous brilliant white rice-grain size free bodies in arthroscopy not radiographically 