[Epineural layer of the median nerve in carpal tunnel syndrome]

The different factors influencing a nerve compression have been studied regarding to the anterior epineurium modifications. Depending on the interstitial collagen sclerosis 3 histological groups have been separated in 55 patients. There is no influence on the epineurium layer depending on the pre-operative electrologic neuro-stenosis and denervation data. The macroscopic status of the nerve and the epineurium sclerosis have no parallelism. The age and the number of corticoid injections have no influence on the epineurial sclerosis. The only influencing factor on the histological aspect of the epineurium is the long term duration that precedes the surgery.