title: Percutaneous carpal tunnel release compared with mini-open release using ultrasonographic guidance for both techniques.
abstract: OBJECTIVE
  To compare the outcomes of percutaneous carpal tunnel release (PCTR) and mini-open carpal tunnel release (mini-OCTR) using ultrasonographic guidance for both techniques.
  
  
  METHODS
  We included 74 hands of 65 women with idiopathic carpal tunnel syndrome (age, 52-71 y; mean, 58 y). Thirty-five hands of 29 women had the PCTR (release with a device consisting of an angled blade, guide, and holder, along a line midway between the median nerve and ulnar artery (safe line) under ultrasonography (incision, 4 mm), and 39 hands of 36 women had the mini-OCTR (release along the safe line, distally under direct vision (incision, 1-1.5 cm) and proximally under ultrasonography, using a device consisting of a basket punch and outer tube.
  
  
  RESULTS
  Assessments at 3, 6, 13, 26, 52, and 104 weeks showed no significant differences in neurologic recovery between the groups (p > .05). The PCTR group had significantly less pain, greater grip and key-pinch strengths, and better satisfaction scores at 3 and 6 weeks (p < .05), and less scar sensitivity at 3, 6, and 13 weeks (p < .05). There were no complications.
  
  
  CONCLUSIONS
  The PCTR provides the same neurologic recovery as does the mini-OCTR. The former leads to less postoperative morbidity and earlier functional return and achievement of satisfaction.
  
  
  METHODS
  Therapeutic III.
authors.affiliation: Toranomon Hospital, Tokyo 105-8470, Japan. toranomonkajigaya@hotmail.com
authors.forename: Ken-ichi
authors.initials: K
authors.lastname: Nakamichi
authors.forename: Shintaro
authors.initials: S
authors.lastname: Tachibana
authors.forename: Seizo
authors.initials: S
authors.lastname: Yamamoto
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Ida
mesh_terms: D000368:Aged; D000704:Analysis of Variance; D002349:Carpal Tunnel Syndrome / Q000000981:diagnostic imaging* / Q000601:surgery*; D005260:Female; D006801:Humans; D008875:Middle Aged; D019060:Minimally Invasive Surgical Procedures; D020127:Recovery of Function; D018709:Statistics, Nonparametric; D013525:Surgical Instruments; D016896:Treatment Outcome; D018084:Ultrasonography, Interventional