Neurological Outcomes Following Carpal Tunnel Wound-closure Techniques

All surgical procedures will be performed with a tourniquet and local anaesthesia using 2% lidocaine in the palmar soft tissues and carpal tunnel. For all subjects, the standard carpal canal decompression procedure will began withskin incision in the radial half of the palm, followed by carpal ligament transection and cutting. Following primary closure, two different techniques were used depending on the subject's randomization group:

• The skin will be stitched with transcutaneous nylon sutures (polypropylene-polyethylene monofilament, non-absorbable surgical suture) 4-0.
• After subcutaneous stitches with 4-0 Coated VicrylTM Plus PS-2, 3/8 ; a two-component skin adhesive, Glubran Tiss 2® will be applied. Each subject will received 0.35 mL of Glubran Tiss® in the open wound, and before bandaging, subjects rested for 20 seconds for a polymerization process.

The neurological outcomes will assessed postoperatively during the follow-up period at intervals of 2, 6, and 12 weeks respectively.

Inclusion criteria

(all of the above)

• age >18 years
• carpal tunnel syndrome
• weakness of thumb abduction
• with atrophy of the thenar
• median nerve conduction impairment estimated by electromyography

Exclusion criteria

(one or more)

• threatening haemorrhagic complications (patients with peroral anticoagulation and/or antithrombotic therapy)
• previous wrist trauma or surgery on the wrist region
• another aetiology of neuropathy
• previous allergic reactions (with lidocaine, cyanoacrylate, formaldehyde, tapes, or adhesives)
• personal or family history of keloids or hypertrophic scars
• severe general illness with cachexia