An assessment of the incidence and significance of pes anserine exostoses

Abstract

Objectives: The aim of this study was to assess the incidence and significance of pes anserine exostosis. Material and Methods: A retrospective search of radiological reports of an individual radiologist over a 12-year period with the term “anserine” was performed. Results: There were 34 pes anserine exostoses which arose at an average of 3.6 cm from the medial joint line. The average incidence of pes anserine exostosis is 1 in 1500 patients undergoing radiographs of one or both knees. Conclusion: Pes anserine exostosis is an incidental finding and is of doubtful clinical significance with no evidence of associated pes anserine bursitis. This is the largest series of pes anserine exostosis.