ABSTRACT
OBJECTIVE: This study was designed to assess the MR appearance of the medial perimalleolar fat in an asymptomatic population and describe the MRI appearance of the medial malleolar bursa. CONCLUSION: The MRI findings of medial perimalleolar fat in asymptomatic individuals and in patients with suspected medial malleolar bursa include normal fat, minimal or extensive subcutaneous edema, and a fluid-filled sac. The latter pattern is consistent with the MR appearance of the medial malleolar bursa.
Subject(s)
Adipose Tissue/anatomy & histology , Ankle Joint/anatomy & histology , Bursa, Synovial/anatomy & histology , Magnetic Resonance Imaging , Adult , Female , Humans , Male , Reference Values , Retrospective StudiesABSTRACT
OBJECTIVE: The aims of this study were to assess, grade, and surgically correlate previously unreported MRI features of superior peroneal retinacular injuries in nine surgically proven cases and to record all soft-tissue and bony abnormalities associated with these injuries. CONCLUSION: MRI was found to be a useful tool for detecting and grading superior peroneal retinacular injuries and providing information, important for presurgical planning, regarding common concomitant soft-tissue and osseous abnormalities of the lateral collateral ligaments, peroneal tendons, and fibular groove. Superior peroneal retinacular injuries are frequently associated with MRI evidence of peroneal tendon dislocations and tears. Conversely, routine MRI studies may not depict dislocated peroneal tendon injuries, despite clinical history to that effect.
