What is a Tibial Tubercle Realignment Osteotomy?
If a patient suffers with patella (kneecap) instability such as recurrent dislocations or a feeling of the patella almost slipping out (subluxations) then an MRI or CT scan may be performed to measure the amount of deformity or TT-TG measurement (Tibial Tubercle – trochlea groove). If this is raised the tibial tubercle (bump in the front of the shin bone) may be transferred along with the attached patella tendon (kneecap tendon) towards the midline, it is then fixed with screws. This is called a tibial tubercle osteotomy and may be performed along with other procedures to treat patellar instability, patellofemoral pain, and osteoarthritis. It removes the load off the painful portions of the kneecap and reduces the pain. Surgical treatment is indicated when physical therapy and other nonsurgical methods have failed. Most patients are able to go home the next day, with the knee immobilised in a brace. Patients gradually begin to bear their body weight after around two weeks and by six weeks most patients are able to bear their own weight without using a brace.