Trochleoplasty With Combined Soft Tissue Reconstruction for Patellar Instability

Patellofemoral instability is a relatively common condition and is multifactorial in its cause, with both soft tissue and bony components. Trochleoplasty is a newly described surgical procedure to help improve outcomes following patellar restabilization.

Trochleoplasty is an emerging surgical technique during patellar stabilization surgery in those patients with underlying trochlear dysplasia.

Trochleoplasty was performed via an open medial parapatellar arthrotomy. Using a combination of osteotome and guided bur, the subchondral surface was undermined to produce a deeper sulcus. The cartilage surface was then plastically deformed into the newly developed trochlea. Trochleoplasty was then secured with a central triple-loaded interference screw and 3 peripheral interference screws. Medial patellofemoral ligament reconstruction was then performed in standard fashion.

Postoperative course was complicated by arthrofibrosis, which required manipulation at 4 weeks. Following manipulation, the patient recovered uneventfully and had returned to full activities at 6 months with full strength, range of motion, and minimal pain.

Trochleoplasty with combined soft tissue reconstruction is a viable treatment option in those patients with recurrent patellar instability and underlying trochlear dysplasia. While not without complications, this surgical technique remains a powerful tool in the correctly indicated patient. Appropriate patient selection and adherence to postoperative rehabilitation are crucial for optimal outcomes.

The author(s) attests that consent has been obtained from any patient(s) appearing in this publication. If the individual may be identifiable, the author(s) has included a statement of release or other written form of approval from the patient(s) with this submission for publication.