Risk factors and time to recurrent patellar dislocations

What factors are associated with early recurrence?

The natural history of patellar dislocation is associated with a high rate of recurrence. This large, retrospective cohort study found a cumulative incidence of recurrent ipsilateral patellar dislocation of 36% at 20 years after a first-time lateral patellar dislocation, compared with 5.4% for contralateral patellar dislocation. Trochlear dysplasia, elevated tibial tubercle to trochlear groove (TT-TG) distance, patella alta and age are factors contributing to a decreased time to recurrence.


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