Clinical study of botulinum toxin A injection combined with spasmodic muscle therapeutic instrument on lower limb spasticity in patients with stroke.

The clinical effect of botulinum toxin A (BTX-A) injection combined with spasmodic muscle therapeutic instrument with simple BTX-A injection was compared. Eighty patients with stroke were randomly divided into the treatment and control groups of 41 and 39 cases, respectively. The two groups of patients were given routine rehabilitation therapy. Ultrasound-guide positioning technology was used; treatment group was administered BTX-A injection combined spasmodic muscle therapeutic instrument while the control group received only BTX-A injection. Muscle tension and motor function were evaluated at 1, 4, 8 and 12 weeks after treatments by rehabilitation physician who was not aware of the grouping of the patients. Muscle tension was significantly reduced after BTX-A injection in the treatment and control groups. Modified Ashworth scale scores of the treatment and control groups 1 and 4 weeks after treatment were significantly lower than those before treatment. Motor function of lower limbs of patients, 1 and 4 weeks after treatment improved significantly. The comparison of step size and walking speed of the groups showed obvious differences with statistical significance (P<0.01). In conclusion, ultrasonic guidance BTX-A injection is easy to operate with good safety. It can effectively improve extensor myospasm of lower limb of patients with rapid onset and the spasm relief can last for three months. Spasmodic muscle therapeutic instrument can improve the spasm condition of lower limb muscle after stroke as well as motor function of lower limbs and activity of daily living, which can make spasmolysis of BTX-A last for a longer period of time.