title: Endoscopic carpal tunnel release.
abstract: BACKGROUND
  Endoscopic carpal tunnel release was developed by Okutsu and Chow in 1989. Many reports have indicated that endoscopic carpal tunnel release diminishes postoperative pain and accelerates the recovery time.
  
  
  METHODS
  In a series of 1278 carpal tunnel release procedures (in 948 patients), 1214 were performed with a modified Menon endoscopic method and the remaining 64 with an open procedure. The patients with idiopathic carpal tunnel syndrome were followed for at least 3 months.
  
  
  RESULTS
  Of the endoscopic release patients, 80.9% recovered grip strength equal to or greater than preoperative levels within 4 weeks, whereas in the open procedure group, the rate was only 59.3%. The difference was statistically significant (p = 0.00011). An immediate complication was one median motor nerve severance. There were 24 conversions to a conventional open procedure during endoscopic release. In the endoscopic group, 81% developed scar tenderness over the thenar crease, 31% developed new sensory disturbance, and 4% developed pillar pain.
  
  
  CONCLUSIONS
  Endoscopic release facilitated the recovery of grip strength and diminished the frequency of scar tenderness. However, neurovascular injury should be carefully prevented.
authors.affiliation: Department of Reconstructive Surgery, Chang Gung Memorial Hospital, Taipei, Taiwan, R.O.C.
authors.forename: H T
authors.initials: HT
authors.lastname: Chen
authors.forename: H C
authors.initials: HC
authors.lastname: Chen
authors.forename: F C
authors.initials: FC
authors.lastname: Wei
mesh_terms: D000328:Adult; D000368:Aged; D002349:Carpal Tunnel Syndrome / Q000601:surgery*; D004724:Endoscopy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013997:Time Factors