Chinese Med J Peking
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Chinese Med J Peking · Oct 2008
ReviewClinical update of pulsed electromagnetic fields on osteoporosis.
To understand the effects of low-frequency pulsed electromagnetic fields (PEMFs) on chronic bony pain, bone mineral density (BMD), bone strength and biochemical markers of bone metabolism in the patients of osteoporosis. ⋯ Low-frequency PEMFs relieves the pain of primary osteoporosis quickly and efficiently, enhances bone formation and increases BMD of secondary osteoporosis. But the effects of PEMFs on bone mineral density of primary osteoporosis and bone resorption were controversial.
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Chinese Med J Peking · Oct 2008
Clinical outcome of dental implants placed in fibula-free flaps for orofacial reconstruction.
Functional reconstruction of the jaw defect due to tumor resection poses a challenging problem in maxillofacial surgery. The osteocutaneous fibula free flap in combination with simultaneous or second stage insertion of dental implants has exhibited growing popularity for such reconstructions. This study was aimed at evaluating the clinical status and the success rates of dental implants inserted in fibula-free flaps for orofacial reconstruction following ablation of tumors. ⋯ Vascularized fibula bone grafts provide a firm basis for the placement of dental implants in jaw reconstruction. Implants placed in fibula bone grafts were shown to integrate normally. The double-barrel technique, or increasing the height of the fibula flap by vertical distraction osteogenesis before implant placement in the mandible, is desirable from a functional and esthetic point of view.
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Chinese Med J Peking · Oct 2008
The height of the osteotomy and the correction of the kyphotic angle in thoracolumbar kyphosis.
This study investigated the relationship between the height of osteotomy and the correction of the kyphotic angle during posterior closing wedge osteotomy with instrumentation and the spinal osteotomy with cage inserting into the intervertebral gap and closing posteriorly by a single posterior approach in thoracolumbar kyphosis, and using this relationship as the basis of the preoperative design. ⋯ The therapeutic effect is significant for both posterior closing wedge osteotomy with instrumentation and spinal osteotomy with cage inserting into the intervertebral gap and closing posteriorly by a single posterior approach. The posterior closing wedge osteotomy with instrumentation is an easier approach with the mean angle of the correction per 1 mm of 2.5 degrees and the maximum angle of correction of 45 degrees . The spinal osteotomy with cage inserting into the intervertebral gap and closing posteriorly by a single posterior approach is more efficient with the mean angle of correction per 1 mm of 6.2 degrees . It should be reserved for the severe cases of thoracolumbar kyphosis. We can also use the formula to help us constructing preoperative design.
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Chinese Med J Peking · Sep 2008
Multicenter StudyPrognostic analysis of refractory anaemia in adult myelodysplastic syndromes.
Patients with myelodysplastic syndrome (MDS) display a very diverse pattern. In this study, we investigated prognostic factors and survival rate in adult patients with MDS refractory anaemia (MDS-RA) diagnosed according to French-American-British classification and evaluated the International Prognostic Scoring System (IPSS) for Chinese patients. ⋯ Chinese patients were younger, and had lower incidence of cytogenetic abnormalities, more severe cytopenias but a more favourable prognosis than Western patients. The major prognostic factors were lower white blood cell count, lower platelet count and fewer abnormal karyotypes. The international prognostic scoring system risk group was not an independent prognostic factor for Chinese myelodysplastic syndrome patients with refractory anaemia patients.