scholarly journals Can Unilateral Kyphoplasty Replace Bilateral Kyphoplasty in Treatment of Osteoporotic Vertebral Compression Fractures? A Systematic Review and Meta-analysis

2016 ◽  
Vol 8;19 (8;11) ◽  
pp. 551-563
Author(s):  
Yang

Background: Kyphoplasty has been proven to be an efficient method to relieve patient suffering from osteoporotic vertebral compression fractures (OVCFs). Because of its technological superiority, unilateral kyphoplasty consumes less operative time and bone cement than traditional bilateral kyphoplasty. However, there is controversy about which method is most efficient in the treatment of OVCFs. Thus, an overall analysis should be performed to shed light on the facts corroborating both procedures. Objective: To evaluate the safety and efficacy of unipedicular kyphoplasty versus bipedicular kyphoplasty in treating OVCFs. Study Design: Inclusion criteria were randomized controlled trials focusing on comparing unilateral versus bilateral balloon kyphoplasty in treatment of OVCFs. The exclusion criteria contained infection, neoplastic etiology, traumatic fracture, neural compression, neurological deficit, spinal stenosis, previous surgery at the involved vertebral body, long-term use of steroids, and kyphoplasty with other invasive or semi-invasive intervention treatment. Retrospective studies, reviews, technology introductions, and biochemical trials were also excluded. Settings: The PubMed MEDLINE, Cochrane Library, Web of Science, and EMBASE were systematic searched. Only randomized controlled trials published up to June 2015 comparing unilateral kyphoplasty with bilateral kyphoplasty in treatment of OVCFs were identified. Methods: Two researchers independently screeded the works for inclusion and data extraction. The Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) system was used to assess the methodological quality and evidence synthesis. Results: Six articles with 563 patients were enrolled in this study. Results showed that the unilateral approach required less surgical time (MD, -23.19; 95% CI, [-27.08, -19.31]; P < 0.00001) and cement consumption (MD, -2.07; 95% CI, [-2.23, -1.91]; P < 0.00001), as well as a reduced cement leakage ratio (RR, 0.59; 95% CI, [0.35, 0.99]; P < 0.05) and improved short-term general health (MD, 1.48; 95% CI, [0.02, 2.93], P < 0.05). No significant difference was found in the visual analog scale score (short-term and long-term), Oswestry Disability Index score (mid-term and long-term) kyphotic angle reduction, restoration rate of anterior vertebral height, vertebral height loss rate, postoperative adjacent-level fractures, or in other assessments of 36-Item Short Form Health Survey parameters (short-term and long-term). Limitations: Only 6 studies were included, so that the sample size was still relatively small and publication bias could not be revealed in this study. Observation time of some data was inconsistent. All of these problems could influence the reliability of the results. Conclusion: Both unilateral kyphoplasty and bilateral kyphoplasty are safe and effective treatments for OVCFs. However, when operative time, cement volume, cement leakage, short-term general health, radiation dose, and hospitalization costs are taken into consideration, unilateral kyphoplasty may be the better choice. Yet, more high-quality RCTs with long-term follow-up are still required to make the final conclusion. Key words: Kyphoplasty, unilateral approach, bilateral approach, osteoporotic vertebral compression fractures, meta-analysis

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Hongyu Wei ◽  
Chunke Dong ◽  
Yuting Zhu ◽  
Haoning Ma

Abstract Background A systematic review and meta-analysis to assess the pros and cons of percutaneous vertebroplasty (PVP) versus kyphoplasty (PKP) for osteoporotic vertebral compression fractures (OVCFs) with intravertebral cleft (IVC) including all available evidence from controlled trials. Methods Databases including Pubmed, Embase, Cochrane Library, China National Knowledge Infrastructure (CNKI), and Wanfang Data were searched to identify relevant studies comparing PVP and PKP for OVCFs with IVC. The outcomes mainly included visual analog scale (VAS), Oswestry Disability Index (ODI), local kyphotic angle (LKA), rate of vertebral height (VH%), and adverse events. Results Nine studies enrolling 688 patients were eligible for meta-analysis. The results indicated no significant differences between the two groups in the short-and long-term VAS, ODI, LKA, or VH% (P > 0.05). Compared with PVP, PKP was associated with significantly longer operation time (P < 0.05), higher cost (P > 0.05), and more injected cement volume (P < 0.05). In terms of adverse events, PKP has a lower risk of cement leakage (P < 0.05), while with no significant difference in adjacent-level fracture rates (P > 0.05). Conclusion The two procedures have similar short- and long-term pain relief, functional recovery, local kyphosis correction, and vertebral height maintenance in OVCFs with IVC. PKP is superior to PVP for the injected cement volume, and lower cement leakage rate, however, with longer operation time, more fluoroscopy times, and higher cost. Further randomized controlled trials (RCTs) should be conducted to confirm these results.


2013 ◽  
Vol 5;16 (5;9) ◽  
pp. 447-453
Author(s):  
Huilin Yang

Background: Osteoporotic vertebral compression fractures (VCFs) commonly occur in aged people. Balloon kyphoplasty (KP) has been proven to be efficacious for pain relief and reduction of vertebral height for patients with osteoporotic VCFs. However, very little is known about the comparison of clinical and radiographic outcomes between unilateral and bilateral balloon KP in treating this kind of patients. Objective: To compare the safety and long-term radiographic and clinical outcomes of unilateral or bilateral balloon KP to treat patients with osteoporotic VCFs. Study Design: A systemic review and meta-analysis of all randomized controlled trials (RCTs) comparing the analgesic efficacy, radiographic outcomes, and complications between unilateral and bilateral balloon KP in patients with osteoporotic VCFs. Setting: The MEDLINE, EMBASE, Pubmed, CINAHL databases, Bandolier, and the Cochrane Controlled Trials Register were systematically searched for evidence from their inception to July 2012 by 2 of the authors (J.L. and L.Z.). Methods: Relevant reports were reviewed by 2 assessors independently and the reference lists of retrieved papers were scrutinized to identify further studies for inclusion, using guidelines set by PRISMA statement criteria. Results: Three RCTs were enrolled in this study. The VAS scores showed no statistical difference between the groups before surgery and either at short-term or long-term follow-up. There was no statistical significance in polymethylmethacrylate (PMMA) leakage between the groups. Analysis of 2 studies showed statistical significance in surgery time (WMD -23.77 [-27.83, -19.71]; P < 0.00001) and PMMA (WMD -1.65 [-2.28, -1.02]; P < 0.00001) consumption between the groups. Limitations: There were few data sources from which to extract abstracted data or published studies. There were only 3 RCTs that met criteria enrollment in this meta-analysis. The quality of these trials was quite low (Jadad score: 1-2). Variable reporting of end points and inconsistent definitions meant that we were not able to include every study for each outcome. There was also clinical heterogeneity among the studies. Conclusion: The efficacy of both unilateral and bilateral balloon KP to provide rapid, significant, and sustained pain relief for patients with osteoporotic VCFs is validated. Unilateral balloon KP is a reasonable treatment for patients with osteoporotic VCFs considering that it could achieve equivalent pain relief with less surgery time and PMMA consumption compared to bilateral balloon KP. There was no evidence to prove that unilateral balloon KP results in higher incidence of PMMA leakage than bilateral balloon KP. Although unilateral balloon KP was less efficacious in the reduction of fractured vertebral body, it is still unclear if the clinical results of balloon KP were positively correlated with the restoration of vertebral height and amount. Key words: Kyphoplasty, unilateral approach, bilateral approach, , postoperative pain, osteoporotic fractures


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Kunpeng Li ◽  
Changbin Ji ◽  
Dawei Luo ◽  
Wen Zhang ◽  
Hongyong Feng ◽  
...  

AbstractSevere osteoporotic vertebral compression fractures (OVCFs) were considered as relative or even absolute contraindication for vertebroplasty and kyphoplasty and these relevant reports are very limited. This study aimed to evaluate and compare the efficacy of vertebroplasty with high-viscosity cement and conventional kyphoplasty in managing severe OVCFs. 37 patients of severe OVCFs experiencing vertebroplasty or kyphoplasty were reviewed and divided into two groups, according to the procedural technique, 18 in high-viscosity cement percutaneous vertebroplasty (hPVP) group and 19 in conventional percutaneous kyphoplasty (cPKP) group. The operative time, and injected bone cement volume were recorded. Anterior vertebral height (AVH), Cobb angle and cement leakage were also evaluated in the radiograph. The rate of cement leakage was lower in hPVP group, compared with cPKP group (16.7% vs 47.4%, P = 0.046). The patients in cPKP group achieved more improvement in AVH and Cobb angle than those in hPVP group postoperatively (37.2 ± 7.9% vs 43.0 ± 8.9% for AVH, P = 0.044; 15.5 ± 4.7 vs 12.7 ± 3.3, for Cobb angle, P = 0.042). At one year postoperatively, there was difference observed in AVH between two groups (34.1 ± 7.4 vs 40.5 ± 8.7 for hPVP and cPKP groups, P = 0.021), but no difference was found in Cobb angle (16.6 ± 5.0 vs 13.8 ± 3.8, P = 0.068). Similar cement volume was injected in two groups (2.9 ± 0.5 ml vs 2.8 ± 0.6 ml, P = 0.511). However, the operative time was 37.8 ± 6.8 min in the hPVP group, which was shorter than that in the cPKP group (43.8 ± 8.2 min, P = 0.021). In conclusion, conventional PKP achieved better in restoring anterior vertebral height and improving kyphotic angle, but PVP with high-viscosity cement had lower rate of cement leakage and shorter operative time with similar volume of injected cement.


2017 ◽  
Vol 59 (5) ◽  
pp. 577-585 ◽  
Author(s):  
Chang Gao ◽  
Min Zong ◽  
Wen-tao Wang ◽  
Lei Xu ◽  
Da Cao ◽  
...  

Background Percutaneous kyphoplasty (PKP) is a common treatment modality for painful osteoporotic vertebral compression fractures (OVCFs). Pre- and postoperative identification of risk factors for cement leakage and follow-up complications would therefore be helpful but has not been systematically investigated. Purpose To evaluate pre- and postoperative risk factors for the occurrence of short-term cement leakages and long-term complications after PKP for OVCFs. Material and Methods A total of 283 vertebrae with PKP in 239 patients were investigated. Possible risk factors causing cement leakage and complications during follow-up periods were retrospectively assessed using multivariate analysis. Cement leakage in general, three fundamental leakage types, and complications during follow-up period were directly identified through postoperative computed tomography (CT). Results Generally, the presence of cortical disruption ( P = 0.001), large volume of cement ( P = 0.012), and low bone mineral density (BMD) ( P = 0.002) were three strong predictors for cement leakage. While the presence of intravertebral cleft and Schmorl nodes ( P = 0.045 and 0.025, respectively) were respectively identified as additional risk factors for paravertebral and intradiscal subtype of cortical (C-type) leakages. In terms of follow-up complications, occurrence of cortical leakage was a strong risk factor both for new VCFs ( P = 0.043) and for recompression ( P = 0.004). Conclusion The presence of cortical disruption, large volume of cement, and low BMD of treated level are general but strong predictors for cement leakage. The presence of intravertebral cleft and Schmorl nodes are additional risk factors for cortical leakage. During follow-up, the occurrence of C-type leakage is a strong risk factor, for both new VCFs and recompression.


2013 ◽  
Vol 4;16 (4;7) ◽  
pp. 277-290
Author(s):  
Qin Fu

Background: Kyphoplasty reduces the pain caused by osteoporotic vertebral compression fracture (OVCF). Although the procedure is typically carried out using a bilateral approach, it is now increasingly performed using a unilateral approach because of the concern for longterm adverse effects. However, little evidence is available to demonstrate superior safety of the unilateral approach. Objective: The purpose of this study was to compare the short- and long-term safety and efficacy of unilateral vs. bilateral kyphoplasty. Study Design: A systematic review and meta-analysis of randomized controlled trials. Settings: MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, and abstracts published in the related orthopedic journals were systematically searched up to September 2012, using “unilateral kyphoplasty” and “osteoporotic vertebral compression fractures” as key words. Methods: Two investigators independently searched and identified relevant reports and abstracts using the PRISMA statement criteria. Relevant studies cited by the identified papers were also included. The level of evidence was classified as good, fair, and limited (or poor) based on the quality of evidence developed by the U.S. Preventive Services Task Force (USPSTF). Results: Four randomized controlled trials (RCTs) of 159 cases were enrolled. The methodological quality of the articles was determined as moderate. We did not find any significant difference between unilateral and bilateral kyphoplasty on pain relief, in either short-term or long-term follow-up (P = 0.65 and P = 0.69, respectively). The rate of adjacent vertebral fracture was not statistically different with a P value of 0.88 and 95% CI (confidence intervals) of 0.25-3.26. Cement leakage was comparable between unilateral and bilateral kyphoplasty (P = 0.56, 95% CI = 0.46-4.26). The loss of vertebral height in long-term follow-up was not different (P = 0.10, 95% CI = -0.39-4.54). Operation time and cement dosage were considerably less for unilateral kyphoplasty (P < 0.01 and P < 0.05, respectively). Limitations: Only 4 RCTs and 159 patients were included in this systematic review. Publication bias also existed among the studies included. Conclusions: Both unilateral and bilateral kyphoplasty are effective in alleviating the back pain caused by OVCF. Two approaches have the same degree of safety. More RCTs are needed to examine the efficacy and adverse reactions of the 2 approaches. Key words: Unilateral kyphoplasty, bilateral kyphoplasty, osteoporotic vertebral compression fractures, systematic review, meta-analysis, randomized controlled trials


2015 ◽  
Vol 3;18 (3;5) ◽  
pp. 209-221
Author(s):  
Zhaomin Zheng

Background: Percutaneous vertebroplasty (PVP) and percutaneous balloon kyphoplasty (PKP) can increase bone strength as well as alleviate the pain caused by vertebral compression fractures (VCFs), and both procedures rely on polymethyl methacrylate (PMMA) cement injected into the fractured vertebra for mechanical stabilization of the VCFs. However, there is debate over which of these 2 surgical procedures can give better short-term and long-term outcomes. A lot of studies and meta-analysis were designed to assess the advantages and drawbacks of PKP and PVP in the treatment of VCFs, but most of them didn’t consider the effect of VCF levels on the treatment outcome, which can influence the results. Objective: To assess the safety and efficacy of PKP compared to PVP in the treatment of single level osteoporotic vertebral compression fractures (OVCF). Study Design: Studies with the following criteria were included: patients with VCFs due to osteoporosis; PKP comparing PVP; study design, RCT or prospective or retrospective comparative studies. Furthermore, the studies which reported at least one of the following outcomes: subjective pain perception, quality of life evaluation, incidence of new adjacent vertebral fracture, bone cement leakage, and post-operative kyphotic angle. Articles were excluded in our meta-analysis if they had a neoplastic etiology (i.e., metastasis or myeloma), infection, neural compression, traumatic fracture, neurological deficit, spinal stenosis, severe degenerative diseases of the spine, previous surgery at the involved vertebral body, and PKP or PVP with other invasive or semi-invasive intervention treatment. Setting: University hospital. Methods: A systematic search of all articles published through May 2014 was performed by Medline, EMASE, OVID, and other databases. All the articles that compared PKP with PVP on single level OVCF were identified. The evidence quality levels of the selected articles were evaluated by Grade system. Data about the clinical outcomes and complications were extracted and analyzed. Results: Eight studies, encompassing 845 patients, met the inclusion criteria. Overall, the results indicated that there were significant differences between the 2 groups in the short-term visual analog scale (VAS) scores, the long-term Oswestry Disability Index (ODI), short- and long-term kyphosis angle, the kyphosis angle improvement, the injected cement, and the cement leakage rates. However, there were no significant differences in the long-term VAS scores, the short-term ODI scores, the short- and long-term SF-36 scores, or the adjacent-level fracture rates. Limitations: Statistical efficacy can be improved by more studies, low evidence based non-RCT articles are likely to induce various types of bias, no accurate definition of short-term and long-term outcome time points. Conclusion: PKP and PVP are both safe and effective surgical procedures in treating OVCF. PKP has a similar long-term pain relief, function outcome (short-term ODI scores, short-and long-term SF-36 scores), and new adjacent VCFs in comparison to PVP. PKP is superior to PVP for the injected cement volume, the short-term pain relief, the improvement of short- and long-term kyphotic angle, and lower cement leakage rate. However, PKP has a longer operation time and higher material cost than PVP. To confirm this evaluation, a large multi-center randomized controlled trial (RCT) should be conducted. Key words: Percutaneous, kyphoplasty, vertebroplasty, osteoporosis vertebral compression fracture, pain, meta-analysis Pain Physician 201


2021 ◽  
Author(s):  
Hai-Tao Zhu ◽  
De-Gang Ding ◽  
Shui Wang ◽  
Yu-Long Zhu

Abstract Background & Aim: Osteoporotic vertebral compression fractures (OVCFs) are acknowledged as common occurred fractures among humans, especially for the elderly population. The minimally invasive percutaneous methods such as kyphoplasty as well as vertebroplasty have been valid and effective tools in terms of reducing clinical problems, which are associated with more beneficial effects as compared to traditional methods such as open surgery or conservative treatment. Hence, we conducted the current meta-analysis in order to gather updated evidence available for the systematical assessment of the clinical and radiographic outcomes of VP in comparison of KP.Methods: Publications on comparison kyphoplasty versus vertebroplasty in treatment of OVCFs were collected. After rigorous and thorough review of quality, we extracted the data on the basis of eligible trials, which analyzed the summary hazard ratios (HRs) of the endpoints of interested.Results: Totally, our inclusion criteria involved five studies. 561subjects involving 334 patients received VP and 227 patients received KP were included, of which patients receiving KP or VP failed to show any significant differences in the visual analog scale (VAS) scores (MD =-0.02, 95% CI -0.40 – 0.35; P = 0.91),and the risk of cement leakage (OR =1.60, 95% CI 0.82 – 3.12; P = 0.17). Nevertheless, the Oswestry Disability Index (ODI) scores (MD =-1.56, 95% CI -2.39 – -0.73; P = 0.0002), the injected cement volume (MD =-0.40, 95% CI -0.77 – -0.04; P = 0.03) and the operation time (MD =-9.67, 95% CI -11.55 – -7.80; P <0.00001) in VP group were linked to markedly lower trend in comparison of KP group with significant statistical difference.Conclusion: The present meta-analysis controls the acceptable level of the efficacy across the involved trials. The VP had ODI scores, the injected cement volume and the operation time exerted several advantages in this meta-analysis. Yet, VP failed to show benefits in terms of the VAS scores and cement leakage in comparison of KP therapy. Given the combined results of our study, the optimal treatment for patient harboring OVCFs should be determined by further high-quality and multi-center RCTs along with longer follow-ups as well as larger sample size.


2019 ◽  
Vol 48 (4) ◽  
pp. 030006051989476
Author(s):  
Zhangzhe Zhou ◽  
Zhiyong Sun ◽  
Yimeng Wang ◽  
Xiaoyu Zhu ◽  
Zhonglai Qian

Objective To compare the safety and efficacy of kyphoplasty in the treatment of occult and non-occult osteoporotic vertebral compression fractures (OOVF). Material and Methods From 2015 to 2017, 82 OOVF and 105 non-occult osteoporotic vertebral compression fractures (N-OOVF) were evaluated with the Visual Analog Scale (VAS), Oswestry Disability Index (ODI), and vertebral height preoperatively, immediately postoperatively, and one year postoperatively. Operative time, fluoroscopy time, and cement injection volume were recorded. Results Compared with the preoperative VAS and ODI scores, the scores of both groups were significantly improved after surgery. Preoperative ODI and VAS scores of the OOVF were lower than those of the N-OOVF. The operative time, fluoroscopy time, and bone cement injection volume of the OOVF were significantly lower than those of the N-OOVF. Vertebral height of the N-OOVF improved significantly after surgery. There were differences in cement leakage and adjacent vertebral fractures between the two groups. Conclusion Compared with N-OOVF, OOVF are safer with kyphoplasty, and it is necessary to diagnose OOVF in a timely manner.


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