Results : Fifty elbows (43 patients) and 44 shoulders (39 patients) achieved complete pain relief in all pain categories; 24 elbows and 28 shoulders substantially improved, . had only minor symptoms. Thus, 74 elbows and 72 shoulders responded to RT. Nineteen elbows (17 patients) had surgery after RT due to persisting symptoms or subjective dissatisfaction; 17 shoulders (12 patients) were non-responders and five of those were operated on; seven elbows and one shoulder were completely free of pain after surgery. The mean Morrey score improved by 18 points (from 78 to 96) and the mean Constant and Murley score improved by 48 points (from 18 to 66). Two cases worsened according to the Morrey score and one case worsened according to the Constant and Murley score. Bi- and multivariate analysis revealed two factors with negative prognostic value on treatment outcome, . EPH, long symptom interval prior to RT and long-term immobilization with plaster ( P <) and PHS, long symptom interval prior to RT and lack of pain intensification during the first RT course ( P <) were poor prognostic factors.