Simple plaster external fixation for the treatment of distal radius fracture is difficult to obtain the good reduction and fixation, and in recent years, traction splint has better treatment effect.OBJECTIVE:
To comparatively analyze the effect of rubber band stretching and stress relaxation on the treatment of distal radius fracture with traction splint through biomechanical methods.METHODS:
Totally 236 cases of distal radius comminuted fractures were divided into treatment group and control group according to the treatment method. The patients in the treatment group were treated with traction splints and the patients in the control group were treated with manipulative therapy and splints external fixation. The X-ray films were taken regularly to observe the healing of the fracture, and the wrist function was assessed with Dienst assessment standards. Instron Electronic Universal Material Testing Machine 3367 was used to detect the rubber band stretching and stress relaxation of the traction rubber band in order to test the rubber band maximum stress.RESULTS AND CONCLUSION:
According to the intent-to-treat analysis, all the patients were involved in the final analysis. All the patients were followed-up for more than 5 months, and longest for 13 months. Dienst functional assessment showed in the treatment group, excellent in 68 cases, good in 42 cases and the excellent and good rate was 93.2%; the excellent and good rate of the control group was 52.6%, the excellent and good rate of the treatment group was significantly higher than that of the control group. Traction splint for the treatment of distal radius fracture has the advantages of simple operation and reliable clinical efficacy. Rubber band stretching and stress relaxation results showed that the maximum stress of the rubber band was 46.97 N and it was maintained at 20.60 N, thereby achieving the traction effect in the reduction treatment of distal radius comminuted fractures.