Faculty of Medicine and University Hospital, Center for Orthopedic and Trauma Surgery, University of Cologne, Kerpener Str. 62, 50937, Cologne, Germany.
Department of Anatomy II, University of Cologne, Cologne, Germany.
Clin Anat. 2020 Jul;33(5):661-666. doi: 10.1002/ca.23483. Epub 2019 Oct 10.
Ruptures of the distal biceps brachii tendon are generally treated operatively due to their loss of supination and flexion force. A mechanical impingement at the insertion of the tendon at the radial tuberosity is discussed to play a role in the etiology of this injury. The aim of this study was to present a detailed, three-dimensional anatomical analysis of the radioulnar space at the radial tuberosity. A total of 166 imprints of the radioulnar space in neutral rotation and pronation from 84 cadaveric specimens of both arms using silicone impression material were produced for this study. Imprints were cut in slices of 3 mm and digitally measured after picture acquisition using a high-resolution digital camera. Distances were grouped into a proximal, central, and distal groups and used for correlation to morphometric data at the elbow (radial head diameter, ulna and radius length) as well as volume calculation. The mean radioulnar distance was 8.8 ± 4.0 mm in neutral rotation and 7.8 ± 3.9 mm in pronation. In pronation, the central zone was the smallest whereas in neutral rotation the proximal zone was the smallest. The volume of the radioulnar space did not reduce significantly during pronation. Little space is provided for the insertion of the distal biceps brachii tendon especially during pronation. This could play a role in the etiology of distal biceps brachii tendon ruptures and should be considered in the fixation after rupture of the tendon. Clin. Anat., 33:661-666, 2020. © 2019 Wiley Periodicals, Inc.
肱二头肌远端肌腱撕裂一般需要手术治疗，因为它们会丧失旋后和屈肘力量。有人认为，肌腱在桡骨粗隆处的附着点受到机械性撞击，在这种损伤的发病机制中起作用。本研究旨在对桡骨粗隆处的尺桡骨间隙进行详细的三维解剖分析。本研究共使用硅橡胶印模材料对 84 只尸体标本的双侧上肢在中立旋转位和旋前位进行了 166 次尺桡骨间隙印模。印模被切成 3mm 的切片，在使用高分辨率数码相机获取图像后进行数字测量。距离分为近侧、中央和远侧组，并与肘部的形态测量数据（桡骨头直径、尺骨和桡骨长度）以及体积计算相关联。在中立旋转位时，平均尺桡骨间隙为 8.8±4.0mm，在旋前位时为 7.8±3.9mm。在旋前位时，中央区最小，而在中立旋转位时，近侧区最小。在旋前位时，尺桡骨空间的体积没有明显减小。尤其是在旋前位时，为远端肱二头肌肌腱的附着提供的空间很小。这可能在远端肱二头肌肌腱撕裂的发病机制中起作用，在肌腱撕裂后的固定中应加以考虑。临床解剖学，33:661-666, 2020。©2019 年 Wiley 期刊，公司。
