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1.  Vertebroplasty Using Calcium Phosphate Cement for Osteoporotic Vertebral Fractures: Study of Outcomes at a Minimum Follow-up of Two Years 
Asian Spine Journal  2012;6(1):34-42.
Study Design
A case-series study.
Purpose
To assess the long-term clinical and radiographic outcomes after vertebroplasty using calcium phosphate cement (CPC) for treatment of osteoporotic vertebral fractures (OVF).
Overview of Literature
Vertebroplasty has become common for the treatment of OVF. However, few studies have reported the clinical application of CPC to vertebroplasty.
Methods
We reviewed 86 consecutive patients undergoing 99 vertebroplasties using CPC. Following repositioning and curettage of the pathological soft tissue of the vertebral body (VB), vertebroplasty using CPC was performed in patients with osteoporotic burst fracture and pseudoarthrosis (procedure A). Vertebroplasty was also performed in patients with osteoporotic compression fractures (procedure B). Back pain and lower back pain were evaluated using the visual analogue scale (VAS). The VB deformity index was measured in a lateral radiograph as the ratio of the VB's height to its longitudinal diameter.
Results
The mean age at time of surgery was 77 years old. The mean duration of follow-up was forty-four months. All patients reported decreased pain according to the VAS immediately after vertebroplasty, and pain relief was maintained at the last follow-up in all patients without new OVFs. Complete bone union was observed in all cases by six months after surgery. The mean recovery rate of deformity index was 5.9% in procedure A and 0.02% in procedure B at the final follow-up visit.
Conclusions
Vertebroplasty using CPC gave a satisfactory outcome and no delayed complications in elderly patients with osteoporotic vertebral fractures at follow-up times of at least two years.
doi:10.4184/asj.2012.6.1.34
PMCID: PMC3302913  PMID: 22439086
Osteoporosis; Vertebral fracture; Biodegradable bone cement substitutes; Calcium phosphate cement; Vertebroplasty
2.  Postoperative Meningitis in Patients with Cervical Cord Tumor: A Case Report 
Asian Spine Journal  2010;4(2):136-140.
Postoperative meningitis after spinal surgery is a rare complication that can result in a life-threatening condition. Linezolid (LZD) is an oxazolidinone which has been approved in Japan for infections caused by methicillin-resistant Staphylococcus aureus. The authors encountered a case of postoperative meningitis with cerebrospinal fluid leakage (liquorrhoea) that occurred after resection of a cervical cord tumor. The infection was caused by methicillin-resistant Staphylococcus epidermidis(MRSE). Debridement and suture of the dura matter was carried out. LZD was given intravenously. The infection was cured without any sequelae. Based on this result, we concluded that LZD might be considered as one of the first choices for the treatment of postsurgical meningitis caused by MRSE.
doi:10.4184/asj.2010.4.2.136
PMCID: PMC2996627  PMID: 21165319
CSF leakage; Postoperative meningitis; Surgical site infection; Methicillin-resistant Staphylococcus epidermidis; Linezolid
3.  The Effectiveness of Gefitinib on Spinal Metastases of Lung Cancer - Report of Two Cases - 
Asian Spine Journal  2008;2(2):109-113.
Lung cancer has a high mortality rate and is often diagnosed at the metastatic stage. Recently, gefitinib, a molecule target therapeutic drug, has offered a new approach for patients with non-small-cell lung cancer (NSCLC). This report describes the effects of gefitinib on bone metastases in two patients with NSCLC. The pain induced by a bone metastasis was relieved after the administration of gefitinib. Furthermore, the radiographs and CT findings showed sclerotic changes that matched those of the metastatic bone tumor after gefitinib administration in both patients. It is believed that gefitinib inhibited tumor cell proliferation and induced normal bone formation. In patients with NSCLC, gefitinib may be effective in the treatment of bone metastases.
doi:10.4184/asj.2008.2.2.109
PMCID: PMC2852086  PMID: 20404966
Gefitinib; Bone metastases; Lung cancer

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