Effects of multiple injections of hypertonic dextrose in the rabbit carpal tunnel: A potential model of carpal tunnel syndrome development

Yuichi Yoshii, Chunfeng Zhao, James D. Schmelzer, Phillip A. Low, Kai Nan An, Peter C. Amadio

研究成果: Article同行評審

24 引文 斯高帕斯(Scopus)

摘要

Background: This study investigated the effects of a series of four hypertonic dextrose injections on the subsynovial connective tissue (SSCT) and median nerve within the carpal tunnel of a rabbit model. Methods: Twenty New Zealand white rabbits were used. One forepaw carpal tunnel was randomly injected with 0.1 ml of 10 % dextrose solution. The contralateral forepaw was injected with a similar amount of saline. This injection was made once per week for 4 weeks. The animals were killed at 16 weeks after the initial injection and were evaluated by electrophysiology (EP), SSCT mechanical testing, and histology. Results: Mechanical testing revealed significantly greater ultimate load and energy absorption in the dextrose injection group compared to the saline injection group (P < 0.05). Histological evaluation revealed SSCT fibrosis and thickening and edema in the median nerve bundles in the dextrose injection group. There was a prolongation in the latency of the EP test in the dextrose injection group (P = 0.08). Conclusions: Previous studies had shown that one or two injections of 10 % dextrose could induce moderate SSCT fibrosis and mild EP changes without nerve histology changes. In this study, we have shown that higher doses create more severe fibrosis and, most importantly, more severe neuropathy, suggesting a dose-response effect, and confirming this as a potentially useful animal model for researching the etiology and treatment of carpal tunnel syndrome.

原文English
頁(從 - 到)52-57
頁數6
期刊Hand
9
發行號1
DOIs
出版狀態Published - 2014 三月

All Science Journal Classification (ASJC) codes

  • 手術
  • 骨科和運動醫學

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