Kaku Nobuhiro, Shimada Tatsuo, Tabata Tomonori, Tagomori Hiroaki, Abe Tetsutaro, Zhang Juan Juan, Tsumura Hiroshi
Department of Orthopaedic Surgery, Faculty of Medicine, Oita University, Yufu City, Oita, Japan.
Oita College of Judo Therapy and Acupuncture-Moxibustion, Yufu City, Oita, Japan.
Muscles Ligaments Tendons J. 2018 Jan 10;7(3):442-448. doi: 10.11138/mltj/2017.7.3.442. eCollection 2017 Jul-Sep.
We aimed to investigate the three-dimensional structure of the collagenous fibers of the ligamentum teres (LT) of the human hip and clarify the LT micro-anatomy at the attachment of the femoral head.
Femoral heads and LT were collected during hip arthroplasty. Specimens were cut into 5-10-mm squares, prepared, developed, and observed under a light microscope. Next, specimens were prepared and examined under a scanning electron microscope (SEM).
Under optical microscope, LT adhered to the artificial cartilage at the attachment of the femoral head. Under SEM, LT comprised parallelly arranged collagenous fibers and the fine collagenous fibrils were twisted. While the central collagenous fibers of the LT at the attachment of the femoral head penetrated the articular cartilage tissue and reached the ring-shaped bone, fibers at the margin traversed and adhered to the cartilage surface.
Articular cartilage and subchondral bone are present at the LT attachment to the femoral head. Although collagenous fibers of the LT show parallel arrangement at the main trunk, they are dispersed at the cartilage surface and not all reach the thin subchondral bone of the femoral head. This could possibly weaken ligament strength at the attachment of the femoral head.
IV.
我们旨在研究人髋关节圆韧带（LT）胶原纤维的三维结构，并阐明股骨头附着处的LT微观解剖结构。
在髋关节置换术中收集股骨头和LT。将标本切成5 - 10毫米见方，进行制备、显影，并在光学显微镜下观察。接下来，制备标本并在扫描电子显微镜（SEM）下检查。
在光学显微镜下，LT在股骨头附着处附着于人工软骨。在SEM下，LT由平行排列的胶原纤维组成，细胶原纤维呈扭曲状。虽然股骨头附着处LT的中央胶原纤维穿透关节软骨组织并到达环形骨，但边缘的纤维穿过并附着于软骨表面。
在LT附着于股骨头处存在关节软骨和软骨下骨。虽然LT的胶原纤维在主干处呈平行排列，但它们在软骨表面分散，并非全部到达股骨头的薄软骨下骨。这可能会削弱股骨头附着处的韧带强度。
IV级。
