Abstract
High tibial osteotomy is a reliable method for relieving pain in the varus osteoarthritic knees. The success of the operation depends in large part on obtaining satisfactory postoperative alignment. Many studies emphasized excellent stability and alignment achieved by an external fixator. We used the Orthofix external fixator which was a unilateral device containing a ball and socket joint, and used half pins. The Orthofix external fixator was found to be useful in maintaining alignment as well as in diminishing the complication of peroneal nerve palsy et al.
