The first, which he was pretty sure he was going to do, MPFL replacement. My medial patella femoral ligament was replaced with a cadaver tendon.
The second, osteotomy of the tibia. The goal of this is to deepen the grove that the patella (kneecap) sits in. This can be done without using bone to build up the grove, in those cases a wedge is used to build up the grove instead. On my left knee (December 2009) my surgeon used a wedge, but for this knee he used my bone of my tibia to build up the grove.
The third, adjustment of the Q-Angle. The Q-Angle is the angle between the tibial tubercle (right under the kneecap on the tibia) to the middle of the patella and the middle of the patella to the ASIS (hip)
The Q-Angle:
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjy4kqzdKDitn9IlU9L-eERD3CREjBkTVHBLCYAktUDFZn1EII0kjyb5PcFSyk5BN3DaDytSXoObS7gNj1yMRUt82sKpDnUy6OOOEYHqtmLxc2DKnoXV7rNXJ00fOqTy1jxidIqA9__WfSl/s400/q_angle.jpg)
The Surgical Fix:
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgnrdqA79kI35fYy25vUbD8P6PbHWkb931a6zpHbK6DtrH6aijfeoEPbnuqv3mxY4P4Z5z7A5D6jd_MBA9NH8-gOFspIFN2EGUrMVVjHAunh32d-j6X6uO2t_m-ax9OznKAhZoj30o-rPQ0/s400/LARGE_1471-2474-11-167-2.jpg)