Indication and Procedure Description
This procedure is indicated for those patients who have recurrent episodes of patella dislocation. The procedure is considered after multiple episodes where the patella dislocates with minimal activity. The procedure is also occasionally indicated for those patients who have patellofemoral (anterior) knee pain; however the improvement in pain following this can be unpredictable. The procedure involves moving the bony attachment of the patella tendon on the tibia to a more medial (inner) and anterior (forward) position, combined with releasing the tight tissues on the lateral (outside) aspect of the patella. This allows the patella to run in a more normal position, thereby preventing lateral dislocation. The bony portion of the patella tendon attachment of the tibia is called the tibial tubercle. Once this has been moved, it is securely re-attached with two screws.
X-rays will be obtained peri-operatively. It will also include a skyline X-ray of the patella to assess its location with respect to the knee. Occasionally CT scans are also obtained to allow a better determination of the degree of dislocation and bony anatomy.