[Results of a modified Watson-Jones graft used in the treatment of chronic fibular instability of the lateral ligaments (author's transl)].

Pathogenesis, signs and diagnosis of the chronic instability of the lateral ligaments of the upper ankle are described. The advantages and disadvantages of a modified Watson-Jones graft are discussed and are compared with other surgical procedures. From 1970 to 1980, 157 modified Watson-Jones grafts were performed at the Trade Association Accident Clinic in Tübingen. Follow-up examinations were possible in 100 patients. In none of the patients was it possible to demonstrate the same extent of pre-operative instability; the functional reduction of mobility appeared minimal. 39 of 54 athletes resumed full sports activities, and 89% of the patients stated they were satisfied with the results. The modified Watson-Jones graft, in spite of the well-known objections, is recommended as a satisfying method of treating chronic fibular instability.