Vertebral osteonecrosis: MR imaging findings and related changes on adjacent levels.
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BACKGROUND AND PURPOSE: No prior report has comprehensively discussed the intravertebral vacuum cleft sign and the fluid sign on MR images of vertebral osteonecrosis. The purpose of this study was to investigate MR images of osteonecrotic vertebral bodies and adjacent intervertebral disks and vertebral bodies. METHODS: We retrospectively reviewed MR images of patients with vertebral osteonecrosis. Affected vertebral bodies with osteonecrosis were defined as an avascular area (nonenhanced area on enhanced T1-weighted images) with collections of intravertebral fluid (hyperintense signal on T2-weighted images), air (signal void on all images), or both. The degree of vertebral collapse was classified as mild (>50%) or severe (<50%) preserved vertebral height. Changes in adjacent intervertebral disks or vertebral bodies 2 above and 2 below the affected vertebrae were compared. RESULTS: We enrolled 112 patients (30 men, 82 women; 121 vertebral bodies) in our study. Intravertebral air alone was observed in 48 involved levels (39.7%), intravertebral fluid alone was found in 47 (38.8%), and both coexisted in 26 (21.5%). Degree of vertebral collapse in affected vertebral bodies significantly differed with presence of air or fluid (P < .05). Vertebral compression fractures adjacent to the affected vertebral bodies were more common in those with intravertebral air alone than in those with intravertebral fluid alone (P < .05). CONCLUSION: Vertebral collapse was more advanced and adjacent vertebral compression fractures were more frequent in patients with intravertebral air than in those with intravertebral fluid. (+info)
Balloon kyphoplasty in the management of vertebral compression fractures: an updated systematic review and meta-analysis.
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This systematic review updates the understanding of the evidence base for balloon kyphoplasty (BKP) in the management of vertebral compression fractures. Detailed searches of a number of electronic databases were performed from March to April 2006. Citation searches of included studies were undertaken and no language restrictions were applied. All controlled and uncontrolled studies were included with the exception of case reports. Prognostic factors responsible for pain relief and cement leakage were examined using meta-regression. Combined with previous evidence, a total of eight comparative studies (three against conventional medical therapy and five against vertebroplasty) and 35 case series were identified. The majority of studies were undertaken in older women with osteoporotic vertebral compression fractures with long-term pain that was refractory to medical treatment. In direct comparison to conventional medical management, patients undergoing BKP experienced superior improvements in pain, functionality, vertebral height and kyphotic angle at least up to 3-years postprocedure. Reductions in pain with BKP appeared to be greatest in patients with newer fractures. Uncontrolled studies suggest gains in health-related quality of life at 6 and 12-months following BKP. Although associated with a finite level of cement leakage, serious adverse events appear to be rare. Osteoporotic vertebral compression fractures appear to be associated with a higher level of cement leakage following BKP than non-osteoporotic vertebral compression fractures. In conclusion, there are now prospective studies of low bias, with follow-up of 12 months or more, which demonstrate balloon kyphoplasty to be more effective than medical management of osteoporotic vertebral compression fractures and as least as effective as vertebroplasty. Results from ongoing RCTs will provide further information in the near future. (+info)
Kyphoplasty: an assessment of a new technology.
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Kyphoplasty is a new procedure for the treatment of vertebral compression fractures that is being performed with increasing frequency. Representing the Technology Assessment Committee of the American Society of Interventional and Therapeutic Neuroradiology, we present a review of the available information regarding this new technology. (+info)
A biomechanical comparison of kyphoplasty using a balloon bone tamp versus an expandable polymer bone tamp in a deer spine model.
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We performed a biomechanical study to compare the augmentation of isolated fractured vertebral bodies using two different bone tamps. Compression fractures were created in 21 vertebral bodies harvested from red deer after determining their initial strength and stiffness, which was then assessed after standardised bipedicular vertebral augmentation using a balloon or an expandable polymer bone tamp. The median strength and stiffness of the balloon bone tamp group was 6.71 kN (sd 2.71) and 1.885 kN/mm (sd 0.340), respectively, versus 7.36 kN (sd 3.43) and 1.882 kN/mm (sd 0.868) in the polymer bone tamp group. The strength and stiffness tended to be greater in the polymer bone tamp group than in the balloon bone tamp group, but this difference was not statistically significant (strength p>0.8, and stiffness p=0.4). (+info)
Percutaneous vertebroplasty compared with optimal pain medication treatment: short-term clinical outcome of patients with subacute or chronic painful osteoporotic vertebral compression fractures. The VERTOS study.
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PURPOSE: To prospectively assess the short-term clinical outcome of patients with subacute or chronic painful osteoporotic vertebral compression fractures (VCF) treated with percutaneous vertebroplasty (PV) compared with optimal pain medication (OPM). METHODS: Randomization of patients in 2 groups: treatment by PV or OPM. After 2 weeks, patients from the OPM arm could change therapy to PV. Patients were evaluated 1 day and 2 weeks after treatment. Visual analog score (VAS) for pain and analgesic use were assessed before, and 1 day and 2 weeks after start of treatment. Quality of Life Questionnaire of the European Foundation for Osteoporosis (QUALEFFO) and Roland-Morris Disability (RMD) questionnaire scores were assessed before and 2 weeks after start of treatment. Follow-up scores in patients requesting PV treatment after 2 weeks OPM treatment were compared with scores during their OPM period. RESULTS: Eighteen patients treated with PV compared with 16 patients treated with OPM had significantly better VAS and used less analgesics 1 day after treatment. Two weeks after treatment, the mean VAS was less but not significantly different in patients treated with OPM, whereas these patients used significantly less analgesics and had better QUALEFFO and RMD scores. Scores in the PV arm were influenced by occurrence of new VCF in 2 patients. After 2 weeks OPM, 14 patients requested PV treatment. All scores, 1 day and 2 weeks after PV, were significantly better compared with scores during conservative treatment. CONCLUSION: Pain relief and improvement of mobility, function, and stature after PV is immediate and significantly better in the short term compared with OPM treatment. (+info)
Outcomes of patients receiving long-term corticosteroid therapy who undergo percutaneous vertebroplasty.
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BACKGROUND AND PURPOSE: The purpose of this study was to determine the efficacy and rate of complications in patients undergoing percutaneous vertebroplasty (PVP) for vertebral compression fractures as a result of secondary osteoporosis caused by long-term corticosteroid use compared with patients with primary osteoporosis treated with PVP. MATERIALS AND METHODS: A retrospective review of all patients undergoing PVP was conducted to identify patients who also received long-term corticosteroid therapy. Outcomes including pain, periprocedural complications, and frequency of new fractures in patients receiving corticosteroids were compared with control patients undergoing PVP for primary osteoporosis. RESULTS: Sixty-eight patients receiving long-term corticosteroid therapy underwent 79 PVP procedures. Patients treated with corticosteroids undergoing PVP were significantly younger and more likely to be male compared with control subjects. Patients receiving long-term corticosteroid treatment experienced significant pain relief immediately postprocedure and at 1 week, 1 month, 6 months, 1 year and 2 years postprocedure (P < .0001 at all time points). Patients receiving corticosteroids experienced similar decreases in pain from baseline compared with control subjects at all follow-up time points (P > .05). The complication rate for patients receiving corticosteroids was 4.4% compared with 3.4% for control subjects (P = .60). Patients on long-term corticosteroid treatment did not have an increased risk of new fractures after PVP compared with control subjects (P = .68). CONCLUSIONS: Percutaneous vertebroplasty performed for vertebral compression fractures as a result of long-term corticosteroid therapy is as safe and effective in relieving pain as PVP performed in patients with vertebral compression fractures as a result of primary osteoporosis. (+info)
AIM: The aim of this study is to evaluate the safety and effectiveness of antalgic and functional results after interdisciplinary approach and treatment of vertebral compression fractures (VCF) with percutaneous balloon kyphoplasty (KP) by the pain medicine specialist. METHODS: Between April and December 2004, after informed consent, 13 patients have been treated for a total amount of 15 KP. For L5 - T11 level spinal anesthesia was performed, above T11 local infiltration was used. The following parameters were recorded: intraoperative course, postoperative course, pain before and after treatment, vertebral height restoring and quality of life measuring on visual analogical scale (VAS) and quality of life questionnaire of the European Foundation for Osteoporosis (QUALEFFO) scale. RESULTS: No complications or adverse events were recorded. VAS values for pain were 6.2+/-2.1 preKP vs 3.3+/-1.7 and 4.5+/-1.1 respectively postKP and at follow-up, with statistically significant differences. Vertebral heights were 53.5+/-16%, 71.2+/-21% and 68.1+/-13.5%, preKP, postKP and at follow-up respectively, with statistically significant differences, similarly to quality of life related parameters and QUALEFFO score. CONCLUSION: Back pain due to vertebral compression fractures is a quite frequent diagnosis for the pain medicine specialist; KP is a new technique showing an association of a low incidence of complications with a success rate, both on pain control and on vertebral height restoring. In our study, KP proved to be a safe technique with a high success rate, both for pain relief and for vertebral height restoring, with immediate results and important consequences on the patient's quality of life, physical and mental status, with a low incidence of complications due also to the choice of performing this procedure in locoregional anesthesia. (+info)
Vertebroplasty, first 1000 levels of a single center: evaluation of the outcomes and complications.
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BACKGROUND AND PURPOSE: Percutaneous polymethylmethacrylate (PMMA) vertebroplasty has become a common procedure for treatment of pain and disability associated with vertebral compression fractures. We reviewed the experience with our first 1000 consecutively treated vertebral compression fractures in an attempt to demonstrate both the short- and long-term safety and efficacy of percutaneous vertebroplasty. MATERIALS AND METHODS: The first 1000 compression fractures treated by vertebroplasty at our institution were identified from a comprehensive prospectively acquired vertebroplasty data base. All patients treated with vertebroplasty were included, regardless of the underlying pathologic cause. Chart reviews of the procedure notes, imaging studies, clinical visits, and follow-up telephone interviews were performed for each patient. Evaluation at each follow-up time point included pain response (subjective and visual analog pain score), change in mobility, change in pain medication usage, and modified Roland-Morris Disability Questionnaire. Statistical analysis was performed on the pain response and change in the Roland-Morris score at each follow-up time point. Significant procedure-related complications that occurred from the time of the procedure were also specifically extracted from the patients' charts. RESULTS: There was a dramatic improvement in all the evaluated parameters following percutaneous vertebroplasty. The improvement in pain, mobility, medication usage, and Roland-Morris score was noticed immediately after the procedure and persisted through the 2-year follow-up. There was a low rate of complications from the procedure, the most common being rib fractures. CONCLUSION: According to our results, practitioners can quote a high success rate and low complication rate for vertebroplasty when making treatment recommendations for painful spinal compression fractures. (+info)