The aim of the study was to estimate the characteristics of tone of extremities' superficial muscles using myometer Myoton-3 with different diameters of testing end, to compare the deviations of values and to choose the optimal diameter of testing end in children with spastic hemiplegia (SH). Bilateral recording (n=360) of natural oscillation frequency (NOF, characterizes the tone of muscle) of extensor digitorum (c.longum) (ED), tibialis anterior (TA) and gastrocnemius (c. mediale) (GM) muscles in the middle part of muscle belly was performed using myometer Myoton-3 in MultiScan mode (20 measurements in each muscle with interval of 1 s) in 11-year-old boy with SH of right side in lying position at rest. Diameter of testing end of myometer was changed using removable attachments (with diameter of 4, 6 and 8 mm). Standard deviations (SD) of NOF (uninvolved side) were equal (0.31) for all attachments in ED muscle, less in attachment with 6-mm diameter (0.26) than for 4- and 8-mm attachments (0.4 and 0.99, respectively) in TA muscle and did not differ significantly in GM muscle (0.13; 0.17 and 0.15, for 4-, 6- and 8-mm attachments, respectively). The tone was significantly (p<0.001) higher in muscles of involved side as compared to uninvolved side (mean and SD; ED: 16.7 +- 1.98 and 15.4 +-.0.31; TA: 22.4 +- 0.71 and 18.9 +- 0.26; GM: 13.6 +- 0.2 and 11.8 +- 0.2 Hz, respectively). Myometry method objectifies the information concerning the muscle tone and the Myoton-3 with 6-mm attachment can be recommended to be used in testing children with SH or diplegia.
展开▼
