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Mpfl Reconstruction for Recurrent Patellofemoral Instability: Rates of Failure vs. Radiographic Parameters

IRB Number: 2013-112

March 18, 2016

Institutional Review Board, Hospital for Special Surgery

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Principal Investigator

Beth E. Shubin Stein, MD


Sabrina M. Strickland, MD
Daniel W. Green, MD, MS, FAAP, FACS
Douglas N. Mintz, MD
Jacqueline L. Munch, MD
Lauren Redler, MD
Brian M. Grawe, MD


The goal of this clinical trial is to evaluate the effectiveness of using MPFL reconstruction surgery to treat recurrent patellofemoral (PF) instability in patients without patella alta. Though many surgeons use the tibial-tubercle-to-trochlear groove (TT-TG) and patella alta as guides for treatment, abnormal measurements have not been proven in the literature to predispose patients to failure of soft tissue procedures.  Bony procedures often used to treat recurrent PF instability, such as tibial tubercle osteotomy, carry significantly more morbidity than soft tissue procedures, so patients would benefit from avoiding these procedures if possible.

Inclusion/Exclusion Criteria

Patients who have undergone a prior attempt at surgical stabilization of their unstable patellofemoral joint, and patients with significant cartilage lesions who are indicated for an unloading procedure such as tibial tubercle osteotomy, will be excluded

Contact Information

Beth E. Shubin Stein, MD