[Spondylolisthesis in athletes].

Isthmic spondylolysis is a fatigue fracture which mostly affects athletes. It is acquired between the ages of 5 and 15 years and is directly related to the type of sport practised. Ethnic and racial factors are also involved. It is of interest to identify the first symptoms of isthmic damage at the initial stage. The practice of sports must be interrupted to facilitate isthmic repair. Sporting activities can be resumed, but the initial therapeutic procedure (hyperlordosis) must be modified. Once spondylolysis has been constituted, few sports are contra-indicated in adolescents. Major displacements towards spondyloptosis are rare, but surveillance is necessary. Isthmic spondylolysis is usually well tolerated by adults.