[Ender's flexible nail. Theoretical and biomechanical study. Technic, indications and results in the treatment of cervico-trochanteric fractures].

The authors describe the Ender's technique in the treatment of fractures of the trochanteric region. They realise a blind nailing, introducing "elastic" nails in the region of the medial condyle, under Xray control. The authors have conducted a biomechanical study comparing this type of nailing with nail-plating (extensometry and mathematical theory). 51 patients were operated-on. The results are analysed. The authors point out that the surgical procedure is very fast and simple, therefore they support it for aged people.