Thirty adolescents with acute, primary patellar disloca tion were assessed for a relationship between articular hypermobility and chondral injury. The 15 patients with out articular hypermobility had a 2.5 times increased frequency of articular lesions when compared with 15 patients with hypermobility. Assessment of articular hy permobility should be part of the examination in patients with patellar dislocation.
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