Patients will be randomly divided into 3 equal groups: Group I received ultrasound guided injection of 2 mL PRP into the affected carpal tunnel. Group II received ultrasound guided injection of 2 mL steroids (40 mg triamcinolone acetonide). Group III received ultrasound guided injection of 2 mL saline as placebo control.

Patients will be randomly divided into 3 equal groups: Group I received ultrasound guided injection of 2 mL PRP into the affected carpal tunnel. Group II received ultrasound guided injection of 2 mL steroids (40 mg triamcinolone acetonide). Group III received ultrasound guided injection of 2 mL saline as placebo control.

Each group will be injected twice with 2 weeks intervals. All procedures were done after informed consent. Evaluation of the patients at baseline, 3 and 6 months after last injection was done clinically by measuring visual analogue scale (VAS), electrophysiologically (by measuring motor and sensory nerve conduction studies of median nerve using a standardized technique) and ultrasonographic study by measuring cross sectional area (CSA) of median nerve at the level of pisiform.

Inclusion Criteria:

• mild or moderate idiopathic CTS (diagnosed clinically, ultrasonography & electrophysiologically and classified according to the American Association of neuromuscular diagnostic medicine monograph).

Exclusion Criteria:

• Patients with severe or secondary type of CTS