Clinical validation of the Oswestry-Bristol Classification as part of a decision algorithm for trochlear dysplasia surgery

• DOI: 10.1302/0301-620x.103b10.bjj-2020-1984.r1
• Publication Date: 2021-09-30T07:02:30Z
• Authors: Nikhil Sharma; Nader Rehmatullah; Jan Herman Kuiper; Peter Gallacher; Andrew J. Barnett
• Keywords: Medial Patellofemoral Ligament; Oswestry Disability Index

The Oswestry-Bristol Classification (OBC) is an MRI-specific assessment tool to grade trochlear dysplasia. aim of this study validate clinically the OBC by demonstrating its use in selecting treatments that are safe and effective.The patellotrochlear index were used as part Oswestry Patellotrochlear Algorithm (OPTA) guide surgical treatment patients with patellar instability. Patients assigned one four groups: medial patellofemoral ligament reconstruction (MPFLr); MPFLr + tibial tubercle distalization (TTD); trochleoplasty; or trochleoplasty TTD. A prospective analysis a longitudinal database was performed. Between 2012 2018, 202 (233 knees) mean age 24.2 years (SD 8.1), recurrent instability treated two fellowship-trained consultant sports/knee surgeons at Robert Jones Agnes Hunt Orthopaedic Hospital. Clinical efficacy each group assessed Kujala, International Knee Documentation Committee (IKDC), EuroQol five-dimension questionnaire (EQ-5D) scores baseline, up 60 months postoperatively. Their safety complication rate requirement for further surgery. pattern clinical outcome over time analyzed using mixed regression modelling.In all, 135 knees (mean 24.9 9.4)) MPFLr. Ten (7.4%) required additional total 50 24.4 6.3)) (20%) 20 19.5 3.0)) Three (15%) In group, there significant improvement IKDC, EQ-5D year postoperatively (p < 0.001) recognized level overall rate.The valid dysplasia and, when OPTA, helps determine effective. This fulfils requirements application mainstream practice. Cite article: Bone Joint J 2021;103-B(10):1586-1594.