Arai T
Department of Orthopaedic Surgery, St. Marianna University School of Medicine, Kanagawa, Japan.
Nihon Seikeigeka Gakkai Zasshi. 1993 Dec;67(12):1114-21.
The present investigator has studied the following anatomic variations and degenerative changes of the articular cartilage of the ulnar side of the midcarpal joint: the perforation of the triangular fibrocartilage (TFC), and the ruptures of the scapholunate and lunotriquetral interosseous ligaments (S-L lig., L-T lig.). The materials were 127 wrist joints obtained from 66 cadavers (age 32-95, average age 74) and were studied radiographically and anatomically. Two types of the ulnar side of the midcarpal joint were classified radiographically and anatomically. In the first type, there was no articulation present between the hamate and the lunate in 42.5% of the dissected specimens. In the second type, there was an articulation present between the hamate and the lunate in 57.5% of the dissected specimens. Wrists of the second type correlated significantly with the ulnar shift ratio of lunate on the radiographical measurement (p < 0.01). Significant cartilage erosion and exposed subchondral bone were found at the joints of the second type. There was no correlation between the TFC perforation, the carpal interosseous ligament ruptures and degenerative changes of the articular cartilage of the ulnar side of the midcarpal joint.
三角纤维软骨（TFC）穿孔、舟月和月三角骨间韧带（S-L韧带、L-T韧带）断裂。材料为取自66具尸体（年龄32 - 95岁，平均年龄74岁）的127个腕关节，进行了影像学和解剖学研究。腕中关节尺侧分为两种类型，进行了影像学和解剖学分类。在第一种类型中，42.5%的解剖标本中钩骨和月骨之间无关节连接。在第二种类型中，57.5%的解剖标本中钩骨和月骨之间有关节连接。第二种类型的腕关节在影像学测量上与月骨尺侧移位率显著相关（p < 0.01）。在第二种类型的关节处发现了明显的软骨侵蚀和软骨下骨暴露。TFC穿孔、腕骨间韧带断裂与腕中关节尺侧关节软骨的退行性改变之间无相关性。
