Hindfoot pain: Terminology, treatment and outcome

This thesis focuses on providing insight into terminology use, treatment and outcome of different causes of hindfoot pain. Hindfoot pain can be caused by a variety of pathologies and it is necessary to have uniform terminology as it provides the ability to communicate with an universal language. Regarding chronic Achilles tendon problems, the most common clinical diagnosis is mid-portion Achilles tendinopathy, followed by insertional problems such as retrocalcaneal bursitis. For mid-portion Achilles tendinopathy and retrocalcaneal bursitis, a wide variety of surgical techniques have proven to be effective. In this thesis the endoscopic treatment is evaluated. Furthermore, a patient-reported outcome measure specific for Achilles tendon ruptures is validated in Dutch. Two other issues are addressed in this thesis: flexor hallucis longus (stenosing) tenosynovitis and posterior ankle impingement syndrome.