[Interposition of periosteum in joint fractures in adolescents; comparison of operative and conservative treatment (author's transl)].

Interposition of periosteum in joint fractures in adolescents may lead to delayed consolidation of the fracture or even malposition (varus-valgus deformities etc.) by early partial closure of the epiphyseal line. In severe cases, early arthrosis may be sequelar of inappropriate treatment of these patients. 14 cases of joint fractures with interposition of periosteum in adolescents are presented. The results of 5 operated cases are compared with 9 conservatively treated patients. The need for operative treatment is stressed.