Patellofemoral Joint Auto-fusion after Patella Tendon Repair: A Case Report

Post-traumatic patellofemoral auto fusion is poorly described in the literature and its etiology may be multifactorial. Management options are not well published and this case report addresses a rare and complex case of patellofemoral autofusion after a patellar tendon repair with a description of our surgical approach and ultimately improvement in patient outcome and satisfaction.

A 59-year-old African American female suffered an acute traumatic patellar tendon rupture that was treated with a primary repair that resulted in sequelae leading to a subsequent open procedure revealing an osseous bridge between the patella and trochlea. After osteotomy of this bridge, the patient's range of motion improved.

For the appropriate management of arthrofibrosis surgeons should focus on modifiable risk factors including close follow-up with patients, patient expectation management, and consider surgical intervention such as techniques described below in recalcitrant cases to evaluate for post-traumatic sequelae including bone bridge formation.