Moritomo H, Viegas S F, Nakamura K, Dasilva M F, Patterson R M
Division of Hand Surgery, Department of Orthopaedic Surgery and Rehabilitation, The University of Texas Medical Center, Galveston, TX 77555-1350, USA.
J Hand Surg Am. 2000 Sep;25(5):899-910. doi: 10.1053/jhsu.2000.4582.
To evaluate anatomic variations and distribution of degenerative changes in the scaphotrapezio-trapezoidal (STT) joint, 165 embalmed cadaver wrists were examined. An interfacet ridge on the distal scaphoid was found in 81% of the wrists and the shape of the distal joint surface of the scaphoid was classified into 3 types. Underdevelopment of the capitate-trapezium ligament was found in 15% of the wrists. A new skeletal measurement for the inclination of the joint surface of the trapezium-trapezoid in the STT joint (TT inclination) was investigated anatomically and radiographically. Degenerative changes were found in 39% of the wrists. The most common location of degenerative changes was on its ulnar aspect on the distal scaphoid and on the radial and central aspect of the trapezoid on the TT side. The presence of degenerative changes had a significant correlation with a higher anatomic and/or radiographic TT inclination and/or underdevelopment of the capitate-trapezium ligament.
为评估舟大多角-小多角（STT）关节的解剖变异和退变改变的分布情况，对165例防腐处理的尸体腕关节进行了检查。在81%的腕关节中发现舟骨远端有一个关节面嵴，舟骨远端关节面的形状分为3种类型。在15%的腕关节中发现头状骨-大多角骨韧带发育不全。对STT关节中小多角骨-小多角骨关节面倾斜度（TT倾斜度）进行了一项新的骨骼测量，并通过解剖学和影像学方法进行了研究。在39%的腕关节中发现了退变改变。退变改变最常见的部位是舟骨远端的尺侧以及TT侧小多角骨的桡侧和中央。退变改变的存在与更高的解剖学和/或影像学TT倾斜度以及/或头状骨-大多角骨韧带发育不全显著相关。
