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The posterolateral ligament of the elbow anatomy and clinical relevance
The posterolateral capsule was recognized in the past as an important structure for elbow stability but was later disregarded. Two recent biomechanical papers demonstrated its role in preventing posterolateral instability, and thus it should be identified as a distinct ligament: the posterolateral ligament (PLL). This study includes two parts: an anatomic study of the PLL's footprint; and 5 cases of pathological lesions of the PLL.
Source: JSES