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首页> 外文期刊>Anatomical science international >Innervation of the triangular fibrocartilage complex of the human wrist: quantitative immunohistochemical study.
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Innervation of the triangular fibrocartilage complex of the human wrist: quantitative immunohistochemical study.

机译：人类腕部三角形纤维软骨复合体的神经支配：定量免疫组织化学研究。

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摘要

The distribution of neural elements in the triangular fibrocartilage complex (TFCC) of the human wrists was studied via immunohistochemical staining of protein gene product (PGP) 9.5 and calcitonin gene-related peptide (CGRP). Articular branches projecting to the TFCC arose from the dorsal branch of the ulnar nerve in all wrists examined. The TFCC is subdivided into the following six regions: the articular disc proper (ADP), meniscus homolog (MH), radio-ulnar ligament (RUL), loose part of ulnar collateral ligament (lUCL), dense part of ulnar collateral ligament (dUCL), and internal portion (IP). The IP consists of a mixture of dense and loose connective tissues enclosed by the ADP, MH, RUL, and UCL, and resides deep in the prestyloid recess, which is a pit in the MH. The densities of PGP 9.5-positive neural elements, including free nerve endings, single nerve fibers, nerve fascicles, and perivascular neural nets, were significantly higher in the IP than in other regions. Some of the neural elements except for the perivascular neural nets were positive for CGRP. The high density of neural elements in the IP suggests that sensory nerves projecting to the TFCC enter into the IP and from there distribute to adjacent regions such as the MH and RUL. Free nerve endings are responsible for pain transmission. The high density of free nerve endings in the IP suggests that the IP is a source of ulnar side wrist pain.
机译：通过蛋白质基因产物（PGP）9.5和降钙素基因相关肽（CGRP）的免疫组织化学染色研究了人手腕三角纤维软骨复合体（TFCC）中神经元的分布。在所有检查的腕部中，尺神经的背分支伸出到TFCC的关节分支。 TFCC分为以下六个区域：固有关节盘（ADP），半月板同系物（MH），尺ul韧带（RUL），尺侧副韧带（lUCL）的松散部分，尺侧副韧带的密集部分（dUCL） ）和内部部分（IP）。 IP由ADP，MH，RUL和UCL包围的密集和疏松结缔组织的混合物组成，并深埋在前茎突凹处，后者是MH中的凹坑。在IP中，PGP 9.5阳性神经元的密度（包括自由神经末梢，单神经纤维，神经束和血管周围神经网）显着高于其他区域。除血管周围神经网外，某些神经元对CGRP呈阳性。 IP中神经元的高密度表明，投射到TFCC的感觉神经进入IP，并从那里分布到MH和RUL等邻近区域。自由的神经末梢负责疼痛的传递。 IP中游离神经末梢的高密度表明IP是尺侧腕部疼痛的来源。

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