Department of Physical Medicine and Rehabilitation, Korea University Guro Hospital, Seoul, Korea.
Muscle Nerve. 2020 Apr;61(4):504-507. doi: 10.1002/mus.26820. Epub 2020 Feb 5.
This study evaluated the sonoanatomy of the deep motor branch of the ulnar nerve (DBUN) using high-resolution ultrasonography (HRUS).
In 60 wrists of 30 healthy adults, the gross course, cross-sectional area (CSA), and diameter of the DBUN were observed by HRUS (frequency band 3-16 MHz). Its course was assessed by using the distance from anatomical landmarks and depth from the skin.
The DBUN was found in all subjects with HRUS, and it branched off from the ulnar nerve before reaching the hamate bone. At the hook-of-hamate level, the mean DBUN CSA was 1.5 ± 0.2 mm , and the mean diameter was 1.5 ± 0.2 mm. The mean distance from the hamate hook to the DBUN was 5.4 ± 1.0 mm, and the mean depth from the skin was 8.6 ± 1.6 mm.
Sonoanatomy of the DBUN obtained from HRUS may be useful in detecting or preventing DBUN lesions.
本研究使用高分辨率超声（HRUS）评估尺神经深运动支（DBUN）的超声解剖结构。
在 30 名健康成年人的 60 个腕部中，通过 HRUS（频带 3-16MHz）观察 DBUN 的大体走行、横截面积（CSA）和直径。其走行通过与解剖标志的距离和皮肤深度来评估。
所有受试者的 HRUS 均能发现 DBUN，它在到达钩骨前从尺神经分支。在钩骨水平，DBUN 的平均 CSA 为 1.5±0.2mm，平均直径为 1.5±0.2mm。从钩骨钩到 DBUN 的平均距离为 5.4±1.0mm，从皮肤的平均深度为 8.6±1.6mm。
从 HRUS 获得的 DBUN 的超声解剖结构可能有助于检测或预防 DBUN 病变。
