This thesis contains research about normal values of hip muscle strength, hip range of motion and hip and groin related symptoms of professional football and field hockey players. In addition, research is conducted on the development of the hip joint and the association between an abnormal hip shape (cam morphology, classified by alpha angle >60 degrees) and limited range of motion, symptoms, other radiological parameters and hip osteoarthritis

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J.A.N. Verhaar (Jan)
Erasmus University Rotterdam
Department of Orthopaedics

van Klij, P. (2021, March 10). The Development of the Non-Perfect Hip in Young Athletes. Retrieved from