A, Lateral capsular incision just anterior to lateral collateral ligament and popliteal tendon insertion. B, Line AB is incision along lateral border of lateral gastrocnemius tendon. Line BC is edge of osteotomized area. Line CD is lateral capsular incision. C, Intraarticular structures exposed when arcuate ligament complex is folded back. Area prepared to receive bone mass also is shown. SEE TECHNIQUE 45.10.