[Dislocation of the peroneal tendon].

Anatomic, histological and experimental investigations show that for preventing luxation of the peroneal tendons, the shape of the retromalleolar groove is less important. The deciding structure is the retinaculum musculorum peroneorum superius. A subtly differentiated way for diagnosis and therapy, depending on the natural anatomy is presented. The results of a follow-up examination of 31 patients are reported.