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. 2007 Oct 17;2007(4):CD003905. doi: 10.1002/14651858.CD003905.pub3

Brown 1993.

Methods RCT
Participants Mean age 56 years. 68% female. Mean duration of symptoms 24 months. Electrophysiologically confirmed CTS, idiopathic CTS. 24 of 145 patients treated bilaterally.
Interventions (1) ECTR: two‐portal extrabursal Chow technique (84 hands).
 (2) OCTR (85 hands).
Outcomes Improvement in symptoms (paraesthesiae, numbness).
 Return to work/ADL.
 Complications.
Notes  
Risk of bias
Bias Authors' judgement Support for judgement
Allocation concealment (selection bias) High risk C ‐ Inadequate