Keywords:
Musculoskeletal soft tissue, MR, Arthrography, Calcifications / Calculi
Authors:
M. Williamson, K. Chettiar, M. Ho, G. Constantinescu, B. Bhattacharjee; Dartford/UK
DOI:
10.1594/essr2016/P-0068
Imaging findings OR Procedure Details
The plain film demonstrated the presence of calcific deposits behind the lateral malleolus and initially a diagnosis of loose bodies in the ankle joint was made.
The Orthopaedic Surgeon asked for an MSK Radiologist opinion.
The unusual location of the calcific deposits,
lack of locking and absence of osteochondral defects in the ankle raised doubts about the diagnosis of loose bodies in the ankle joint.
It was felt an MR examination would be helpful prior to arthroscopic surgery.
The MSK Radiologists recommended MR arthrography for good anatomic delineation.
The MR ankle arthrogram demonstrated no loose bodies in the joint,
but detected tenosynovial chondromatosis of the peroneal tendon sheath.
The patient avoided unnecessary ankle joint arthroscopy and underwent peroneal tendon sheath debridement.