Purpose: Transcutaneous electrical nerve stimulation (TENS) is a nonpharmacological method used to reduce spasticity. It was also assumed that TENS reduces pain and therefore improves limb function. Most of the previous studies about the effect of TENS were done in the lower limb and in stroke patients. There is a lack of enough literature about the direct and indirect effects of TENS in the upper limb. Hence, our study aimed to determine whether TENS combined with therapeutic exercises helps to improves hand function by reducing spasticity in children with hemiplegic cerebral palsy (CP).
Materials and methods: Twenty-nine children with hemiplegic CP were randomly assigned to the TENS group (n = 15) or the control group (n = 14). The TENS group received traditional physical therapy with the adjunct application of conventional TENS for 30 minutes (pulse duration, 250 µs; pulse rate, 100 Hz) on the wrist extensors, once daily, 3 days a week, for 8 weeks, while the control group received traditional physical therapy.
Results: The results showed a significant intergroup difference in handgrip strength over the 8-week period. The time to accomplish the Jebsen Taylor Hand Function Test (JTHFT) task decreased by 48% and the ABILHAND-Kids questionnaire scores improved by 23% in the TENS group.
Conclusions: The use of TENS in combination with therapeutic exercise may improve strength and hand function.
Keywords: Hemiplegic cerebral palsy; grip strength; hand function; transcutaneous electrical nerve stimulation.