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General Orthopaedics

OUTCOMES OF CONSERVATIVE MANAGEMENT OF PRIMARY PATELLAR DISLOCATION

British Indian Orthopaedic Society (previously IOSUK) Annual Conference, July 2016



Abstract

Optimal management of acute patellar dislocation is still a topic of debate. Although, conventionally it has been managed by non-operative measures, recent literature recommends operative treatment to prevent re-dislocations. Our study recommends that results of non-operative measures comparable to that of operative management.

Our study is the retrospective with 46 consecutive patients (47 knees) of first time patellar dislocation managed between 2012 and 2014. The study methodology highlighted upon the etiology, mechanism of injury and other characteristics of first time dislocations and also analysed outcomes of conservative management including re-dislocation rates. The duration of follow up ranged from 1 to 4 years.

Average age at first-time dislocation was 23 years (Range 10–62 years). Male:Female ratio was 30:17. Twisting injury was the commonest cause. 1 patient required open reduction but all others relocated spontaneously or had successful closed reduction. Medial Patello-Femoral Ligament injury was frequent associated feature. 11 knees (24%) re-dislocated during follow up. Age was the significant risk factor for re-dislocations. All patients with re-dislocation were less than 30 years old. Maximum redislocations happened between 6 months to 1 year after index dislocation. Skeletal abnormality was the commonest pathology in re-dislocators. Only 4 patients (8.6%) finally required surgical intervention. One patient had persistent knee pain as a complication.

Conservative management of primary patellar dislocation is successful in majority of patients. Surgery should be reserved for the carefully selected patients with specific indications.


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