Effect of elbow position on grip strength

grip strength is an important prerequisite for good performance of the upper limb and also as an indicator of disease activity. Hand strength decrease with trauma, surgery and during inflammatory diseases. Therefore it is important to know factors that increase hand strength. This study was designed to investigate the effect of elbow position on hand strength. In this survey hand strength was evaluated on right and left hand of normal people (45 women and 55 men) in faculty of rehabilitation. People in this survey didn’t have any euromuscloskeletal problem. A standard hand dynamometer was used to measure the hand strength in full extension and 90 degrees of elbow flexion. This survey was a descriptive analytic cross sectional study. There was significant different between means of right hand strength in 90 flexion (x= 49.08) and full ext of elbow (x=50.41) in males.There was significant different between means of right hand strength in 90 flex (x= 28.89) and full ext of elbow(x=30.13) in females.Results indicated that hand strength was significantly higher when the elbow was in full extension.All of these evaluations did on left hand and their results were almost the same. This study shows that various elbow position can change hand strength. the knowledge of how changes in elbow position affect strength of the hand can be used to train patients by therapist.With this knowledge, an individualized program can be designed to train the patient in the specific upper extremity positioning that provides the greatest efficiency to maximize performance.The findings are valuable in the evaluation, and rehabilitation of hand injuries and training patients how to do activity of daily living.