بررسی ارتباط بین قدرت Pinch و Grip با سرعت هدایت عصبی مدین

Abstractintroduction: human hand is a complex and fine structure whose function and strength can be affected by even a mild injury. hand dynamometry is one of the most accepted methods for evaluating the integrity of hand function. nerve conduction velocity (ncv) is a noninvasive procedure to ensure neuromuscular integrity of the hand.materials and methods: in a cross-sectional study, 39 women with an age ranging from 30 to 60 years who attended thevahid electrodiagnostic center (isfahan-iran) during the fall of 2009 were studied. informed consent was signed by all subjects. all participants were asked to perform grip and all types of pinch grip with a dynamometer. nerve conduction velocity was conducted for both hands. all data obtained from the dynamometer and ncv were statistically analyzed via pearson correlation test using spss software version16.results: there were significant differences between sensory and motor ncv of median nerve for pinch strength (maximum correlation was noted for motor ncv with palmar pinch1, p < 0.001, r = 0.379) versus grip strength (maximum correlation was with motor ncv, p < 0.002, r = 0.342). there were significant differences between median severity scale for different types of pinch strength (max correlation with palmar pinch1, p < 0.001, r = -0.613), different types of grip strength (p < 0.001, r = -0.563) and ncv (max correlation with sensory ncv, p < 0.001, r = -0.562)conclusion: dynamometer may be a prognostic tool to determine the amount of median nerve involvement since it measures the strength of thenar musculature. also median severity scale is a good clinical means to prognosticate median sensory and motor ncv.keywords: pinch strength, grip strength, nerve conduction velocity, dynamometer