Patellar Instability Probability

Age¹
LTI²
Contralateral³   Yes     No

¹Age at primary lateral patellar dislocation
²Lateral trochlear inclination angle according to Carrillon et al., Patellar Instability: Assessment on MR Images by Measuring the Lateral Trochlear Inclination—Initial Experience. Radiology, 2000;216(2):582-585.
³History of contralateral patellar dislocation
⁴Based on: Wierer et al., The Patellar Instability Probability Calculator: A Multivariate-Based Model to Predict the Individual Risk of Recurrent Lateral Patellar Dislocation. Am J Sports Med, 2022;50(2):471-477.