Modified Thompson quadricepsplasty. A, Parapatellar and anterolateral incisions. B, Release of rectus femoris (RF) from vastus lateralis (VL) and vastus medialis (VM) close to its patellar insertion. C, Vastus intermedius (VI) and scar adhesions dissected and released from rectus femoris, the anterior surface of the femur, and the upper pole of the patella. D, RF lengthened by Z-plasty if necessary. SEE TECHNIQUE 9.2.