RESUMO
Objective To analyze the influence of radial neck fracture on the upper limb function in older children,and to evaluate the curative effect of plate fixation in the treatment of Salter-Harris Ⅱ type of radial neck fracture.Methods The clinical data of 16 older children with radial neck fractures who treated by T plate internal fixation were retrospectively analyzed.16 cases were closed fractures,merging radial nerve injury in 1 case,3 cases of distal humerus fractures,1 case with rib fractures,fractures were Salter-Harris Ⅱ type,adopt steel plate internal fixa tion.Results 1 6 patients were followed up for 9-1 8 months.X-ray healing time was 6-9 weekson average 7.6 weeks.No malunion and no healing,no case of epiphyseal injuries.1 patient appeared steel block forearm supination.Postoperative patients with forearm pronation were greater than 90° supination were greater than 60 °.No radial nerve injury.Evaluation results were good.Conclusion Clinical treatment effect of open reduction and plate internal fixation in the treatment of older children with Salter-Harris Ⅱ type of radial neck fracture is satisfactory.Surgical treatment not only can enhance the fracture stability,but also can do the elbow joint function exercise to prevent dysfunction much earlier.
RESUMO
A cochlear implant is a new device to be implanted in the inner ear and restore partial hearing to profoundly deaf people. This article first presents the acoustic simulation principle based on CIS speech processing strategy, and then proposes an improved speech synthesis model of this acoustic simulation. Finally, on the basis of acoustic simulation experiments□results on normally hearing listeners, we get a close speech recognition to the result of implants patients, and suggest that our improvement be effective on evaluating cochlea processing strategies.
RESUMO
Cochlear Implant bypasses damaged hair cells and stimulates the auditory nerve directly in the cochlea. Wavelets are especially useful for speech processing of CI, since in the case of wavelets one speaks of a constant-Q filter bank as well as the cochlea. In this paper, a continuous wavelet has application in the filter bank design and an effective result is obtained. Also the lifting scheme, the so-called second generation of wavelet, is adopted, combined with pitch extraction algorithm, to extract fundamental frequency of speech signal. Veracious result is obtained, which shows the great potential of wavelet an lifting scheme in the application in speech processing strategy for cochlear implants based on characteristics of Chinese language.
