Alaqeel Motaz Abdulrhuman, Al-Ahaideb Abdulaziz
Department of Orthopaedic Surgery, King Saud University, Riyadh, Saudi Arabia.
BMJ Case Rep. 2013 Jan 23;2013:bcr2012008218. doi: 10.1136/bcr-2012-008218.
Primary synovial osteochondromatosis is a rarely seen disorder of the synovium in any joints. Among reported cases of knee osteochondromatosis, those originating from the anterior cruciate ligament (ACL) are very rare. We report an unusual case of primary synovial osteochondromatosis. A 27-year-old woman complained of a restricted range of right-knee motion and pain when walking. With locking symptoms similar to those associated with a meniscus bucket handle tear. Although plain radiograph and MRI showed normal appearance, diagnostic arthroscopy revealed the curious appearance of a huge mass seated on ACL. In addition, the sign of proliferation of synovium and cartilaginous tissues were apparent. The ACL mass has been removed while preserving the ACL fibres. Histological examination confirmed a diagnosis of osteochondromatosis. To the best of our knowledge, this is the first report to describe synovial osteochondromatosis originating from ACL fibres and has been resected while preserving the ACL.
原发性滑膜骨软骨瘤病是一种在任何关节中都很少见的滑膜疾病。在已报道的膝关节骨软骨瘤病病例中，起源于前交叉韧带（ACL）的病例非常罕见。我们报告一例原发性滑膜骨软骨瘤病的罕见病例。一名27岁女性主诉右膝关节活动范围受限，行走时疼痛。伴有与半月板桶柄状撕裂相似的交锁症状。尽管X线平片和磁共振成像（MRI）显示外观正常，但诊断性关节镜检查发现前交叉韧带上有一个巨大肿物，外观奇特。此外，滑膜和软骨组织增生的迹象明显。在保留ACL纤维的同时切除了ACL肿物。组织学检查确诊为骨软骨瘤病。据我们所知，这是第一例描述起源于ACL纤维且在保留ACL的情况下进行切除的滑膜骨软骨瘤病的报告。
