The Study Of Biomechanical Mechanism And Therapeutic Effect Evalutation Of Plasticity Splint For The Treament Of The Distal Radius Fracture

Objective To observe the stress distribution of plastic splint for the treatment of distal radius fracture and evaluate the clinical curative effect for the treatment of distal radius fractures.Methods Basic research: Collect six fresh cadaver upper limb specimens, and make model of type A2 fractures of the distal radius, plastic splint and plaster was fixed, the broken end of the fracture around the radial dorsal, palm, the distribution of lateral pressure were tested by SPI Tactilus 32 channel pressure sensor. Clinical research: According to the AO classification,72 cases of patients with distal radius fracture were divided into two groups.The treatment group used plastic splint fixation in neutral position, the control group with plaster cast external fixation in neutral position, fixed period for 6 weeks and the observation period was 3 months. Rats in each group were fixed immediately after fixation, after 2 weeks, 6 weeks after the fixation of wrist joint anteroposterior and lateral X-ray, measurement and analysis of fixed time and fixed after 6 weeks, palmar tilt, ulnar deviation of high use of PACS system, then analysis and compare difference of the three images; According to the modified Green and O ’Brien wrist score standard, the patient wrist function were evaluated respectively in 6 weeks and 3 months.Results Basic research: Plastic splint external fixation can provide less gypsum than external fixation on the broken end of the fracture around the radial dorsal and volar, but they have no statistically significant difference(P > 0.05). Clinical research: Plastic splint and traditional plaster external fixation can better maintain the distal radius fractures high, ulnar deviation, radial palmar tilt, after reduction and six weeks later, and they had no significant difference(P > 0.05); According to the modified Green and O ’Brien wrist score standard, the plastic splint and plaster external fixation have similar effect on the improvement of wrist joint function, pain, grip strength, range of motion and clinical curative(P > 0.05) after six weeks, but the plasticity splint fixation is better than external plaster at to improve the situation, the scope of activities of the wrist joint function and clinical curative effect of fixed(P < 0.05) after three month.Conclusion The plasticity splint can also provide certain pressure to maintain the stability of the fracture; plasticity splint for the treatment of A2 type B distal radius fractures is superior to the traditional plaster on the medium-term clinical efficacy, which is worthy of further study.