Late results of the Keller-Brandes operation for hallux valgus.

Evaluating the late results of the Keller-Brandes operation for hallux valgus in 100 feet on average 5.5 years after surgery, these were functionally and cosmetically satisfying to the patient in 90% of cases. In 97% pain was relieved completely or partially. On examination, however, 23% of the feet still had a clinical hallux valgus angle of more than 30 degrees. A dorsal extension-contracture which was found together with 50% or more of phalangeal resection was present in 6%. The power of plantar flexion of the big toe decreased with the extent of resection of the proximal phalanx. Resection of more than half of the proximal phalanx seems to be disadvantageous and should be avoided.