| Objective To evaluate the effect of low intensity ultrasound in the treatment of radius and/or ulna fracture. Methods 50 patients with radius and/or ulna fracture were treated by internal fixation. After surgery, 25 patients(male 18, female 7, mean age 38.5 ± 13.8) were choose randomly to use low intensity ultrasound (1.5MHz, mean 30mW/cm~2, 20 minutes, twice every day);Other 25 patients(male 16, female 9, mean age 42.3 ± 14.1) were selected as control group. X ray picture was took every 2 weeks to evaluate the healing proceeding. Study the rehabilitation condition of the forearm and fracture healing process in the two groups. Results The mean time of fracture healing in the treatment group was 86.5 ± 11.8d (range from 68 to 128d) while in the control group was 107±21.8d (range from 80 to 20Id). Through T Test, P<0.05, shows the healing time in the treatment group is significantly shorter than that of control group. But there shows no difference in the aspect of function recovery of the forearm. Conclusion Low intensity ultrasound can effectively improve fracture healing but it cannot affect the function recovery in the forearm fracture.
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