Correspondence to Dr Roger Hawkes, European Tour Performance Institute, European Tour, Wentworth Drive Virginia Water, Surrey GU25 4LX, UK; RAH{at}wkes.eu The extensor carpi ulnaris (ECU) muscle plays ...

Our interest in ulnar wrist injuries has developed over 10 years of clinical experience monitoring elite tennis players at the National Training Centre at Roland Garros and at the Bercy Tournament.