الفهرس 
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Abstract
Background:Carpal tunnel syndrome (CTS) isthe most common peripheral nerve lesion in the upper limbs. Many patients with CTS submitted tosurgical release,functional recovery needs to be accelerated after surgery. Objectives: To investigate the effect of low-level light therapy (LLLT) on residual pain and morphological changes of the median nerve (MN) after surgical decompression of CTS. Design: A prospective randomized controlled trial. Setting: The study was conducted atthe outpatient clinic of Banha University Hospital –Egypt, between June 2017 and Feb 2018. Participants:Thirty patients with residual pain after 3 months from open carpal tunnel release (CTR)were randomly divided into two equal groups. Interventions:The laser group (A) received6 weeks treatment plan of 12 sessions of850 nm gallium-aluminium-arsenide Laser, with a power of 100 mW; in addition to medical treatment (analgesics).The control group (B) received medical treatment (analgesics) alone. Main Outcomes Measures:The primary outcome was pain measured byvisual analogue scale (VAS), secondary outcomes included the morphological changes of the MN; Phalen’s test for assessment of CTS; nerve conduction studies for MN sensory distal latency (SDL) andultrasonography for MN cross sectional area (CSA).
Results: There was a statistically significant (p<0.05) reduction in VAS score, and improvement of SDL, CSA in laser group compared with control group. Conclusion:The850nm gallium-aluminium-arsenide is effective in the management of residual pain and median nerve morphology after CTR.