Study on electroacupuncture improving the single-foot supporting phase rate of stroke patients / 中国针灸

<p><b>OBJECTIVE</b>To provide biomechanics basis for acupuncture improving motor function of stroke patients.</p><p><b>METHODS</b>With randomized controlled trial method, 21 cases were randomly divided into a control group (n = 10) and an acupuncture group (n = 10). The control group was only treated with basic neurology therapies, and acupuncture at Shenshu (BL 23), Qihaishu (BL 24), Dachangshu (BL 25) and Pishu (BL 20) etc. were added in the acu-puncture group. After treatment for 2 weeks, the scores of Fugl-Meyer (lower limb part) and Barthel Index assessment before and after treatment were compared, and the changes of the single-foot supporting phase rate were observed.</p><p><b>RESULTS</b>After treatment, the scores of Fugl-Meyer (lower limb part) and Barthel Index assessment had no significant difference in the two groups as compared with those before treatment (P > 0.05), and the single-foot supporting phase rate in acupuncture group had very significant improvement as compared with both those before treatment and those in the control group (P < 0.05 and P < 0.01, respectively).</p><p><b>CONCLUSION</b>Acupuncture can increase the single-foot supporting phase rate of stroke patients and the biomechanics assessment is more sensitive than the rehabilitation scale assessment.</p>

3-dimensional CT cephalometry before and after mandibular angle osteotomy and its clinical significance / 中华整形外科杂志

<p><b>OBJECTIVE</b>To investigate the change of skeleton structure and masseter after mandibular angle osteotomy and its clinical significance in preoperative design.</p><p><b>METHODS</b>3-dimensional CT cephalometry was performed before and after surgery in 18 cases of prominent mandibular angle.</p><p><b>RESULTS</b>Pre- and post-operative data were compared. Significant differences between the pre- and post-operative data were found in the mandibular angle, the distance between mandibular angle, length of ramus, ectropion angle of mandibular angle, triangle Go-Me-Go, the thickness, width and length of masseter.</p><p><b>CONCLUSIONS</b>It indicates the skeleton structure is changed and some kind of atrophy happens in the masseter after operation. So we suggest partial resection of masseter should be unnecessary for mandibular angle osteotomy.</p>

3-dimensional finite elements vitodynamics analysis for mandible after mandibular angle osteotomy / 中华整形外科杂志

<p><b>OBJECTIVE</b>To investigate the changes of mandibular vitodynamics in powerful bite working condition and impact working condition after mandibular angle osteotomy through 3-dimensional finit element analysis.</p><p><b>METHODS</b>A patient of prominent mandibualr angle without malocclusion was selected and underwent 3-dimensional CT before and after operation. The DICOM data of 3-dimensional CT were read by Mimics software and 3-dimensional images were reconstructed. Then the 3-dimensional images were changed into IGES format and imported into ANSYS10.0. The boundary constrained condition and pre-processing condition was setting in ANSYS10.0 software. The 3-dimensional finite element models were generated in ANSYS10.0. Solution process was running and most powerful bite working condition and impact working condition were simulated and calculated.</p><p><b>RESULTS</b>In static stress analysis, the stress peak and stress maximal value point of mandible were basically at equal pace in preoperative and postoperative models. In transience dynamic stress analysis, although stress discrepancies were found in part time point and some region of mandible between preoperative model and postoperative model, the direction and topography of main stress were basically at equal pace. Main stress distributed beside external oblique line and concentrates at the neck of condyle. There was no significant difference of stress conduction and distribution between preoperative and postoperative models.</p><p><b>CONCLUSIONS</b>Compared with preoperative model, postoperative model has different transduction phases of stress, but has almost the same tolerance extents of main stress.</p>

Experiment of using distraction osteogenesis to repair skull defect / 中华整形外科杂志

<p><b>OBJECTIVE</b>To explore the possibility of using distraction osteogenesis to repair skull defect.</p><p><b>METHODS</b>17 goats with one year age were chosen randomly. The animals were divided to 3 groups. Group A includes 7 goats, a 3.0 cm x 2.2 cm rectangle skull defect is created on both sides of parietal area. Group B includes 5 goats, a 2.2 cm x 2.2 cm square skull defect was created on right side of parietal area. Group C includes 5 goats, a 3 cm x 1 cm rectangle skull defect was created on both sides of parietal area. Accordingly, different size of transport discs were created on right side of skull and the distraction apparatus is implanted. 3-D CT was done to measure the skull defect on group A. Biomechanical test was done on group B. Process of bone formation illustrated by histological stain, scan and transparent electric microscope was observed on group C.</p><p><b>RESULTS</b>Group A measured by 3-D CT showed that skull defect of experimental side have been repaired by distraction osteogenesis. There was definitely difference between experimental and control side (P < 0.01). Group B measured by biomechanical test showed no definitely difference between experimental and normal side (maximum load P = 0.235 > 0.05, rigidity P = 0.213 > 0.05). Group C showed that the process of bone formation was typical intramembranous.</p><p><b>CONCLUSIONS</b>The evidence showed that skull defect of goat can be repaired by distraction osteogenesis.</p>

Complications of scalp coronal incision: analysis, prevention, and treatment / 中华整形外科杂志

<p><b>OBJECTIVE</b>The aim of this study was to analyze the complications of coronal incision and investigate the methods of prevention.</p><p><b>METHODS</b>The retrospective analysis was based on 149 cases, who have had operations since 1997 for congenital craniofacial malformation, second deformation of craniomaxillofacial trauma, maxillofacial tumor or cosmetic purposes.</p><p><b>RESULTS</b>Of them, there were injury of unilateral frontal branch of the facial nerve in 3 cases, subcutaneous hematoma in 9 cases, alopecia in 12 cases, incision scar in 14 cases, obvious strip scar in 2 cases, pains, numbness and paraesthesia in 23 cases, ptosis of facial soft tissue in 8 cases and infection in 4 cases.</p><p><b>CONCLUSIONS</b>The coronal incision has the merits of distinct exposure, hidden incision scar, but its complications can not be neglected. During the operation, care should be taken to anatomical layers, protecting the blood vessel and nerve bundle in order to reduce complications.</p>

Surgical management of craniomaxillofacial fibrous dysplasia / 中华整形外科杂志

<p><b>OBJECTIVE</b>To explore the method to obtain good aesthetic and functional results in surgical management of craniomaxillofacial fibrous dysplasia and correct the grotesque deformity.</p><p><b>METHODS</b>According to the type of the lesions, different excision and reconstruction methods were used.</p><p><b>RESULTS</b>19 cases (4 monostotic cases and 15 polyostotic cases) were surgically treated. The period of follow-up range from 9 months to 5 years, all patients obtained satisfactory aesthetic and functional results. No relapse happened during follow up.</p><p><b>CONCLUSIONS</b>Based on modern craniomaxillofacial techniques and computer aided design, extensive radical excision and craniomaxillofacial skeleton reconstruction could be safely accomplished, and the better results were obtained, both aestheticly and functionally.</p>