Abstract

Acute and chronic sports related muscle and tendon injuries are not infrequent in youngsters. Particularly the physis is prone to trauma, as it constitutes the weakest part of the immature skeleton. The kind of sports activity determines the location of the lesion. Most commonly apophyses of hip and pelvis are subject to avulsion. The purpose of this paper is to give a short overview of the pathogenesis, location, prevalence and imaging characteristics of acute and chronic avulsion injuries in the immature skeleton, with special emphasis on tennis related injuries. Tennis-related injuries particularly involve the apophyses of the ischial tuberosity, the anterior inferior or superior iliac spine and the iliac crest.