Comparison of Ultrasound-guided Corticosteroid Injection Versus Corticosteroid Injection and Hydrodissection for Carpal Tunnel Syndrome

change from baseline in self reported pain intensity

patient were asked to indicate the intensity of their average level of pain for the wrist-hand region, using an 11-point scale, ranging from 0 to 10 (worst pain imaginable)

Time frame: 0, 6, 12 weeks

change from baseline in median nerve distal motor latency

the CMAPs were obtained via surface electrodes placed on the abductor pollicis brevis muscle. The active recording electrode was placed on the muscle belly, and the reference electrode was placed on the tendon insertion. The median nerve was stimulated 8 cm proximal to the active recording electrode. Distal motor latencies were measured from the onset of stimulus artifact to the onset of the CMAP

Time frame: 0, 6, 12 weeks

Change from Baseline in sensory nerve conduction velocity

SNAPs were obtained using an antidromic method and recorded by surface electrodes placed at the proximal and distal interphalangeal joints of the index finger for the median nerve and the same joints of the little finger for the ulnar nerve. The median nerves were stimulated at the wrist at a distance of 14 cm from the wrist to the active electrode. Distal sensory latencies were measured from the onset of the stimulus artifact to the onset of the SNAP. SNCV was calculated dividing the distance of 14 cm by the distal sensory latency.

Time frame: 0, 6, 12 weeks