[Possibilities of shoulder arthroscopy in comparison with magnetic resonance tomography and arthro-computerized tomography].

In the last 15 years the methods of examination of the shoulder have intensively expounded. According to a well documented retrospective study we describe the value of the shoulder arthroscopy and its correlation to MRI and arthro-CT findings. MRI represents nowadays the best way of exploring rotator cuff lesions and of investigating an impingement syndrome. Associated with a contrast medium its ability to clear up an anterior or posterior shoulder instability is now superior to the arthro-CT's. The arthroscopy allows the dynamic exploration of the joint and can be used not only as a diagnostic but also as a therapeutic procedure.