To explore the effects of transcranial direct current stimulation (tDCS) combined with electromyographic biofeedback on limb function, motor function and dynamic posture stability in elderly patients with hemiplegia after cerebral infarction.

A total of 86 elderly patients with hemiplegia after cerebral infarction admitted to the Rehabilitation Medicine Department of the Cancer Hospital of Cangzhou People's Hospital from December 2021 to December 2022 were prospectively selected and divided into two groups with 43 cases in each group by random number table method. The control group received routine rehabilitation training, and the experimental group received tDCS combined with myoelectric biofeedback intervention on the basis of routine rehabilitation training. After 6 weeks of intervention, Fugl-Meyer motor function assessment (FMA), simple test for evaluating hand function (STEF), Berg balance scale (BBS), Barthel index (BI), National Institute of Health stroke scale (NIHSS), the clinical spasticity index (CSI) and the time "up and go" test (TUGT) were used to evaluate patients motor function, limb spasm degree, neurological impairment, quality of life, balance status, upper limb function, neurological function recovery, and anterior dynamic stability margin (MOSA), lateral dynamic stability margin (MOSL), and performance oriented mobility assessment-gait (POMA-G) scores were measured. Follow up for 3 months by telephone, the fall injuries between the two groups were compared.

After intervention, the total score of FMA, STEF, BBS, BI, and POMA-G in the test group were higher than those in the control group (P<0.05); the scores of NIHSS, CSI, TUGT, MOSA and MOSL in the test group were lower than those in the control group (P<0.05). After 3 months of follow-up, the fall injury rate of experimental group was lower than that of control group (P<0.05).

In the course of intervention treatment for the elderly with hemiplegia after cerebral infarction, the application of tDCS combined with electromyographic biofeedback can improve the upper limb telekinesis and balance ability of patients, improve posture stability, relieve the degree of limb spasms, promote the rehabilitation of their neurological functions, improve the quality of life, and reduce the rate of fall injury, which is safe and reliable.