Fenelon Christopher, Zafar Muhammed M, Sheridan Gerard Anthony, Kearns Stephen
Galway University Hospitals, Galway, Galway, Ireland.
BMJ Case Rep. 2016 Dec 30;2016:bcr2016217967. doi: 10.1136/bcr-2016-217967.
Posterolateral dislocation of the elbow is an injury commonly treated in the emergency department by closed reduction. Very rarely it can be irreducible and require open reduction. Only four cases of irreducible posterolateral elbow dislocation have been described in the literature over the past 50 years. We report the case of a 20-year-old man who sustained such an injury. Open reduction was performed and revealed the radial head protruding or 'buttonholing' through the lateral collateral ligament complex. This case highlights that continued closed reduction of the elbow should not be attempted, as a mechanical block to reduction can occur making reduction impossible.
肘关节后外侧脱位是急诊科常通过闭合复位治疗的一种损伤。极少见的情况下，它可能无法复位而需要切开复位。在过去50年的文献中仅描述过4例不可复位的肘关节后外侧脱位病例。我们报告了1例发生这种损伤的20岁男性病例。进行切开复位时发现桡骨头穿过外侧副韧带复合体突出或“扣眼样穿出”。该病例强调不应尝试持续对肘关节进行闭合复位，因为可能会出现阻碍复位的机械性阻挡，导致无法复位。
