Anterior cruciate ligament repair for rotatory instability: the Lindemann dynamic muscle-transfer procedure.

The Lindemann operation, originally performed in 1950 as a reconstructive procedure for the anterior cruciate ligament, was performed in the knees of eight patients suffering from rotatory instability. Although the instability persisted, as shown by roentgenographic and clinical examination, treatment with the tendon transfer appears to have provided dynamic stabilization. Seven of the eight patients so treated were subjectively improved, and they returned to sports or activities which they had not been able to perform prior to surgery.