Recovery of sensation and somatosensory evoked potentials following toe‐to‐digit transplantation in man

Nai‐Shin ‐S Chu*, Fu‐Chan ‐C Wei

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

21 Scopus citations

Abstract

Recovery of digital nerve function in 21 patients with toe‐to‐digit transplantation was evaluated by clinical sensory tests and somatosensory evoked potentials (SEPs) to median and digital nerve stimulation. The mean interval between injury and surgery was 7 months, and that between surgery and study was 31 months. The transplanted toes achieved a satisfactory but incomplete recovery in temperature (warm and cold), pinprick, touch, vibration, and two‐point discrimination in that order. The overall sensory status of the transplanted toes appeared to be closer to normal toes than to normal fingers. In SEPs from the transplanted side, median N9, N13, and N20 components had normal latency but reduced amplitude, whereas digital N9 component was usually absent, but N13 and N20 components had prolonged latency and reduced amplitude. Transplantation performed within 1 month after injury prevented amplitude reduction in median SEPs and latency prolongation in digital SEPs. The SEP data suggest that timing of surgery was critical in preventing retrograde effect on the median nerve, and that recovery of digital nerve function was incomplete correlating with clinical sensory findings. © 1995 John Wiley & Sons, Inc.

Original languageEnglish
Pages (from-to)859-866
Number of pages8
JournalMuscle and Nerve
Volume18
Issue number8
DOIs
StatePublished - 08 1995

Keywords

  • digit transplantation
  • restorative neurology
  • sensory function
  • somatosensory evoked potential

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