The effect of external pressure on two point discrimination test and pain threshold in healthy individuals and clinically diagnosed patients of carpal tunnel syndrome
Journal Title: Medpulse International Journal of Physiology - Year 2018, Vol 7, Issue 3
Abstract
Background: Carpal Tunnel Syndrome is the commonest form of entrapment neuropathy which is the combination of symptoms and signs resulting from compression of the median nerve when it passes through the bony carpal tunnel, from forearm to palm. It is prevalent in 2.7 to 5.8 % of the general adult population. In this work we studied the difference in Pain Threshold and Two Point Discrimination test in CTS patients before and after application of pressure. Methodology: The study was conducted on sixty clinically diagnosed patients of Carpal Tunnel Syndrome. Two Point Discrimination Test was done on palmar aspect of tip of index finger of the right hand. It is studied before application of pressure, after 15 min of 150mm of Hg pressure application and after 15 min of rest on releasing the pressure. Pain threshold for electrical stimulation was also studied before and after applying pressure and after 15 min of rest. Results: The distance for two point discrimination was increased that is the ability to discriminate between 2 points is reduced and a highly significant difference was observed before and after application of pressure in both patients and in controls. There was a significant variation between the applications of pressure and after 15 minutes of rest on release of pressure in CTS patients compared to control and we observed that it was not coming back to normal in patients whereas it returned to normal in the subject. The pain threshold was decreased and highly significant difference was observed before and after application of pressure in both patients and in controls. It was also noted that the pain threshold was decreased and highly significant difference was observed before and after application of pressure in both patients and controls in similar manner but there was no significant difference in pain threshold on pressure application during and after 15 minutes of rest. Conclusion: Two point discrimination capacity is lowered and the pain threshold is reduced in the CTS patients. The median nerves of CTS patients are more susceptible to the hazardous and injurious effects of pneumatic tourniquet compression.
Authors and Affiliations
Ribu Sam Stephen, A G Joshi, Basheer M P
Keywords
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