The most advanced procedure being performed for patellar dislocation addresses an important ligament called the medial patellofemoral ligament, or MPFL. The MPFL is the connecting ligament between the end of the thigh bone (femur) and the inner side of the kneecap (patella). When the kneecap dislocates, the MPFL is always torn.
In acute injuries, it may be possible to repair the MPFL. This is only true in first-time dislocations that are addressed with immediate surgery. Many surgeons advocate immediate surgery after an initial patella dislocation to repair the MPFL.
After repeat kneecap dislocations, a new ligament must be constructed in order to fix the MPFL. This is performed using a ligament or tendon from another place in your body, or from a donor. The new MPFL ligament is created and attached to the thighbone and kneecap. The newly reconstructed MPFL securely holds the kneecap in a proper position.
If boney alignment needs corrected a tibial tubercle osteotomy or trochleoplasty is completed.