Clinical results with the SAAB jig in high tibial osteotomy for medial gonarthrosis.

In 56 patients with medial gonarthrosis high tibial osteotomy was performed using the SAAB jig, and another 43 patients with the same condition were operated on without this aid. Significantly greater precision was achieved in the removal of a wedge of the intended size with the aid of the SAAB jig. There was also significantly less increase in anterior inclination of the articular surface of the tibia on lateral X-rays when the SAAB jig was used. Operation using the device is not technically difficult, but is more time-consuming. The SAAB jig is a useful tool for achieving the predetermined correction in high tibial osteotomy.