Gabra Joseph N, Kim Dong Hee, Li Zong-Ming
Hand Research Laboratory, Departments of Biomedical Engineering, Orthopaedic Surgery, and Physical Medicine and Rehabilitation, Cleveland Clinic, Cleveland, Ohio ; Department of Chemical and Biomedical Engineering, Cleveland State University, Cleveland, OH.
Hand Research Laboratory, Departments of Biomedical Engineering, Orthopaedic Surgery, and Physical Medicine and Rehabilitation, Cleveland Clinic, Cleveland, Ohio.
Eur J Anat. 2015 Jan 1;19(1):49-56.
Although the carpal tunnel is known for its anatomical constituents, its morphology is not well recognized. The aim of this study was to investigate the morphometric properties of the carpal tunnel and its surrounding structures. Magnetic resonance, cross-sectional images of the distal carpal tunnel were collected from eight cadaveric hands. Morphological analyses were performed for the cross sections of the carpal tunnel, interior carpus boundary, and exterior carpus boundary. The specimens had a carpal arch width and height of 23.9 ± 2.9 mm and 2.2 ± 0.9 mm, respectively. The carpal tunnel, interior carpus boundary, and exterior carpus boundary had perimeters of 54.8 ± 4.5 mm, 68.5 ± 7.0 mm, and 130.6 ± 11.8 mm, respectively, and areas of 183.5 ± 30.1 mm, 240.7 ± 40.2 mm, and 1002.3 ± 183.7 mm, respectively. The cross sections were characterized by elliptical fitting with aspect ratios of 1.96 ± 0.15, 1.96 ± 0.19, and 1.76 ± 0.19 for the carpal tunnel, interior carpus boundary, and exterior carpus boundary, respectively. The major axis of the boundaries increased in pronation angle, relative to the hamate-trapezium axis, for the exterior carpus (6.0 ± 3.0°), interior carpus (8.2 ± 3.2°), and carpal tunnel (15.9 ± 2.2°). This study advances our understanding of the structural anatomy of the carpal tunnel, and the morphological information is valuable in the identification of structural abnormality, assistance of surgical planning, and evaluation of treatment of effects.
尽管腕管以其解剖结构组成而闻名，但其形态却尚未得到充分认识。本研究的目的是调查腕管及其周围结构的形态测量特性。从八具尸体手部收集了腕管远端的磁共振横截面图像。对腕管、腕骨内边界和腕骨外边界的横截面进行了形态学分析。标本的腕弓宽度和高度分别为23.9±2.9毫米和2.2±0.9毫米。腕管、腕骨内边界和腕骨外边界的周长分别为54.8±4.5毫米、68.5±7.0毫米和130.6±11.8毫米，面积分别为183.5±30.1平方毫米、240.7±40.2平方毫米和1002.3±183.7平方毫米。横截面的特征是椭圆拟合，腕管、腕骨内边界和腕骨外边界的纵横比分别为1.96±0.15、1.96±0.19和1.76±0.19。相对于钩骨-大多角骨轴，腕骨外、腕骨内和腕管边界的长轴在旋前角度增加，分别为(6.0±3.0°)、(8.2±3.2°)和(15.9±2.2°)。本研究增进了我们对腕管结构解剖的理解，并且这些形态学信息在识别结构异常、辅助手术规划以及评估治疗效果方面具有重要价值。
