Munakata T, Nishida J, Shimamura T, Ichinohe S, Abe M, Ehara S
Department of Orthopedic Surgery, School of Medicine, Iwate Medical University, Japan.
Skeletal Radiol. 1995 Apr;24(3):211-3. doi: 10.1007/BF00228927.
A case of simultaneous bilateral avulsion of the patellar apexes is reported. Plain radiography showed bilateral patella alta, but MR imaging was diagnostic. Weakness of the tendo-osseous junction due to secondary hyperparathyroidism and additional chronic inflammatory changes due to repeated microtrauma were considered to be the cause of the rupture.