American Hip Institute, Chicago, Illinois, U.S.A.
American Hip Institute, Chicago, Illinois, U.S.A; Hinsdale Orthopaedics, Hinsdale, Illinois, U.S.A.
Arthroscopy. 2014 Apr;30(4):456-61. doi: 10.1016/j.arthro.2013.12.019.
The purpose of this study was to evaluate the clinical, radiographic, histologic, and intraoperative findings of an amorphous calcification involving the acetabular labrum.
From October 2008 to April 2013, all patients who underwent arthroscopic hip surgery for symptomatic intra-articular hip disorders and were found to have the characteristic calcific deposit involving the acetabular labrum were included. These patients were reviewed retrospectively on prospectively collected data. Radiographs were retrospectively evaluated for morphologic features of impingement and characteristics of labral calcification.
Sixteen patients were identified as having amorphous calcification at the time of arthroscopy. There were 15 women and 1 man. Mean age was 37.3 years (range, 30 to 50 years). Symptoms were present for a mean of 9.3 months (range, 3 to 48 months). All patients reported anterior groin pain. Fifteen (94%) patients had positive anterior impingement and 9 (56%) had positive results for lateral impingement. Calcifications measured on average 3.2 mm (range, 1.9 mm to 5.6 mm), and 14 had a clear separation from the rim with increased opacity compared with neighboring trabecular bone. Intraoperatively, the characteristic amorphous calcium deposit was located in the anterosuperior labrum, with the deposit found to be accessible from the capsule-labral recess in all cases. All patients had labral tears and all patients had at least one component of femoroacetabular impingement (FAI).
Calcification in the anterosuperior acetabular labrum presents with a consistent patient demographic and distinct radiographic and arthroscopic presentation that is different from os acetabuli. As with os acetabuli, one should have a high suspicion for FAI when this lesion is encountered.
Level IV, therapeutic case series.
本研究旨在评估累及髋臼唇的无定形钙化的临床、影像学、组织学和术中表现。
从 2008 年 10 月至 2013 年 4 月，所有因关节内髋关节疾病行关节镜髋关节手术且发现髋臼唇有特征性钙化沉积的患者均纳入本研究。对这些患者进行了回顾性分析，前瞻性收集了数据。回顾性评估了 X 线片上的撞击畸形特征和髋臼唇钙化的特征。
16 例患者在关节镜检查时发现无定形钙化。其中 15 例为女性，1 例为男性。平均年龄 37.3 岁（范围，30 至 50 岁）。症状平均出现 9.3 个月（范围，3 至 48 个月）。所有患者均有前腹股沟疼痛。15 例（94%）患者有前撞击阳性，9 例（56%）患者有外侧撞击阳性。钙化平均大小为 3.2mm（范围，1.9mm 至 5.6mm），14 例与相邻小梁骨相比，钙化边缘清晰，透明度增加。术中，特征性的无定形钙沉积位于髋臼唇的前上部分，所有病例均发现从关节囊-唇隐窝进入。所有患者均有髋臼唇撕裂，所有患者均有髋关节撞击综合征（FAI）的至少一个组成部分。
髋臼唇前上部分的钙化具有一致的患者人口统计学特征，以及独特的影像学和关节镜表现，与髋臼骨岛不同。当遇到这种病变时，应高度怀疑 FAI。
IV 级，治疗性病例系列。
