All India Institute of Medical Sciences, New Delhi.
Institute of Medical Sciences, Banaras Hindu University, Varanasi; 3All India Institute of Medical Sciences, Patna.
Clin Ter. 2023 Jul-Aug;174(4):326-330. doi: 10.7417/CT.2023.2445.
Transverse acetabular ligament (TAL) is one of the important ligaments, which provide stability to the hip joint. On rare occasions, it can get ossified leading to limited mobility of the hip joint. Ossified TAL also converts acetabular notch to a foramen and neurovascular structures passing through the notch can get compressed leading to ischaemic symptoms. During routine demonstration of hip bone to undergraduate students, complete ossification of TAL was found in a right sided hip bone. Present case report with this rare finding also includes a short review of literature impressing on embryological and clinical perspectives of ossified TAL. Ossification of this ligament can be caused by defective ossification of hip bone as three secondary ossification centres develop around the acetabulum in triradiate carti-lage. Also, this can be caused due to heterotopic ossification of TAL after an inflammatory or traumatic injury. This ligament is extremely important in total hip replacement surgery being utilised in determining the position of the acetabular component. Anatomical knowledge of abnormal ossification of TAL is imperative in diagnosis and treatment of various pathologies of the hip joint.
横向髋臼韧带（TAL）是重要的韧带之一，为髋关节提供稳定性。在极少数情况下，它会骨化，导致髋关节活动受限。骨化的 TAL 还会将髋臼切迹转变为孔，穿过切迹的神经血管结构会受到压迫，导致缺血症状。在向本科生演示髋骨的常规过程中，在右侧髋骨中发现了 TAL 的完全骨化。本病例报告及罕见发现还包括对骨化 TAL 的胚胎学和临床观点的简要回顾。该韧带的骨化可能是由于髋骨的骨化缺陷引起的，因为在三辐射软骨中，三个继发骨化中心围绕髋臼发育。此外，这种情况也可能是由于 TAL 的异位骨化引起的，这种异位骨化是在炎症或创伤后发生的。在全髋关节置换术中，该韧带非常重要，用于确定髋臼部件的位置。了解 TAL 的异常骨化对于髋关节各种病变的诊断和治疗至关重要。
