AANA19 Knee Access Pass-The Recurrent Instability of the Patella (RIP) Score_ A Statistically-Based Model for Prediction of Long-Term Recurrence Risk after First-Time Dislocation-Dr. Mario Hevesi, M.D., FRCSC.

The Recurrent Instability of the Patella (RIP) Score_ A Statistically-Based Model for Prediction of Long-Term Recurrence Risk after First-Time Dislocation-Dr. Mario Hevesi, M.D., FRCSC.

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Video Summary

This study used the Rochester Epidemiology Project to analyze 81 patients with first-time lateral patellar dislocations over a 10-year follow-up. Recognizing the multifactorial risk of recurrence, researchers developed the multivariable RIP score based on age (<25 years), skeletal immaturity, trochlear dysplasia, and TTTG/PL ratio. The RIP score stratifies patients into low, intermediate, and high risk of recurrent instability, with 10-year recurrence rates of 0%, 31%, and 79%, respectively. It demonstrated strong predictive ability (AUC 0.875). The RIP score aids long-term prognosis and clinical decision-making and is accessible for clinicians via MDCalc.

Keywords

Rochester Epidemiology Project

lateral patellar dislocation

RIP score

recurrence risk stratification

MDCalc