经皮椎体成形术自固化磷酸钙人工骨充填治疗骨质疏松性胸腰椎压缩性骨折

目的探讨应用经皮椎体成形术(PVP)自固化磷酸钙人工骨(CPC)充填治疗骨质疏松性胸腰椎压缩性骨折的临床疗效。方法自2004年1月起,对26例29个椎体骨质疏松性胸腰椎压缩骨折患者,采用术中手法复位、PVP自固化CPC充填治疗。结果26例患者经单侧或双侧椎弓根穿刺椎体成形术成功治愈。胸腰椎自固化CPC平均充填量为4.6mL。术中CPC渗漏者5例5个椎体。无一例出现严重并发症。经3～8个月(平均4.6个月)随访,术后所有患者疼痛消失。除3例椎体高度丢失15%外,其余椎体高度平均恢复达正常的80%。结论PVP自固化CPC充填治疗骨质疏松性胸腰椎压缩性骨折是一种安全、简单、有效的方法。     

Refractures in cemented vertebrae after percutaneous vertebroplasty: a retrospective analysis

Percutaneous vertebroplasty is an efficient procedure to treat pain due to osteoporotic vertebral compression fractures. However, refracture of cemented vertebrae occurs occasionally after vertebroplasty. It is unclear whether such fractures are procedure-related or part of the natural course of osteoporosis. The effect of potentially important covariates on refracture risk in cemented vertebrae has not been evaluated previously. We retrospectively analyzed the incidence and possible causative mechanism of refracture in patients who had received only one vertebroplasty for a single level of vertebral compression fracture. We assessed the following covariates: age, sex, body weight, height, lumbar spine bone mineral density, treated vertebral level, pre-existing untreated vertebral compression fracture, and gas-containing vertebrae before treatment. Surgical variables, including surgical approach, cement injected, and anterior vertebral height restoration, were also analyzed. Anti-osteoporotic treatment after surgery was recorded. Multiple logistic regression analysis was used to determine the relative risk of refractures of cemented vertebrae. Over all, 98 patients were evaluated with a mean follow-up of 26.9 ± 12.4 months (range, 7–55 months). We identified 62 refractures and the mean loss of anterior vertebral height was 13.3% (range 3.2–40.3%). The greater the anterior vertebral height obtained from vertebroplasty, the greater the risk of refracture occurring (P < 0.01). Gas-containing vertebrae were also prone to refracture after the procedure (P = 0.01). Anti-osteoporotic treatment was of borderline significance between refractured and non-refractured vertebrae (P = 0.07). Only restoration of anterior vertebral height was positively associated with refracture during the follow-ups (P < 0.01). In conclusion, refractures of cemented vertebrae after vertebroplasty occurred in 63% of osteoporotic patients. Significant anterior vertebral height restoration increases the risk of subsequent fracture in cemented vertebrae.     

An ex vivo biomechanical evaluation of an inflatable bone tamp used in the treatment of compression fracture

STUDY DESIGN: Ex vivo biomechanical study using osteoporotic cadaveric vertebral bodies. OBJECTIVES: To determine if the inflatable bone tamp (tamp) restores height to compressed vertebral bodies and to compare the biomechanical properties of isolated, fractured osteoporotic vertebral bodies treated by kyphoplasty (tamp) or vertebroplasty. SUMMARY OF BACKGROUND DATA: Previous biomechanical studies have shown that vertebroplasty increases vertebral body strength and restores vertebral body stiffness, but does not restore vertebral body height lost as a result of compression fracture. METHODS: Compression fractures were experimentally created in 16 osteoporotic VBs assigned to either the tamp or percutaneous vertebroplasty group. The tamp treatment consisted of inserting balloon-like devices into the vertebral body, inflating the bone tamp, and filling the void with Simplex P (Howmedica, Rutherford, NJ) bone cement. The percutaneous vertebroplasty treatment consisted of directly injecting Cranioplastic bone cement (CMW, Blackpool, UK) into the vertebral body. Pre- and posttreatment heights were measured, and the repaired vertebral bodies were recompressed to determine posttreatment strength and stiffness values. RESULTS: The tamp treatment resulted in significant restoration (97%) of vertebral body height lost after compression, whereas percutaneous vertebroplasty treatment resulted in a significantly lower restoration of lost height (30%) (P < 0.05). Both treatments resulted in significantly stronger vertebral bodies relative to their initial state (P < 0.05). The tamp treatment restored vertebral body stiffness to initial values, but the percutaneous vertebroplasty treatment did not (P < 0.05). CONCLUSIONS: Tamp treatment resulted in significantly greater height restoration than did percutaneous vertebroplasty, without loss of vertebral body strength or stiffness.     

Die Wertigkeit der Ballonkyphoplastie bei der osteoporotischen Wirbelkörperfraktur

BACKGROUND DATA: Patients with osteoporotic vertebral compression fractures frequently complain of pain and a loss of function and mobility. Such fractures are associated with an increased mortality. The common treatment with bed rest, bracing or osteosynthesis does not lead to satisfying results. With two new surgical techniques, vertebroplasty and kyphoplasty, an internal stabilisation of osteoporotic vertebral fractures is possible. METHODS: All patients were treated by kyphoplasty. With a minimal invasive dorsal approach, an inflatable bone tamp is placed in the fractured vertebral body. This tamp can restore the vertebral body height and create a cavity, which is filled with bone cement under low pressure. The advantage of kyphoplasty compared to vertebroplasty is the restoration of the vertebral height and a decreased cement leakage rate. We performed a prospective, interdisciplinary study with a follow-up of 12 months. We treated 192 vertebral fractures in 102 patients. Augmentation was performed with polymethylmethacrylate in 138 cases and with a new injectable calcium phosphate-cement in 54 vertebral bodies. Outcome data were obtained with two different spine-scores and by the radiomorphometric evaluation of x-rays before and after treatment. RESULTS: We noticed a significant improvement in pain and function in 89% of the patients. All patients showed a regain of vertebral height of on average 17%. In 7% of all treated vertebral bodies, we noticed cement leakage, which was, however, far below the rates published for vertebroplasty (20-70%). There were two complications, bleeding due to an unknown coagulopathy and a violation of the myelon by malpunction. CONCLUSION: Kyphoplasty is a reliable and minimally invasive method for stabilizing fractured osteoporotic vertebral bodies. Improvement of pain and function and a regain in height of the treated vertebral body can be accomplished.     

Percutaneous vertebroplasty for symptomatic osteoporotic vertebral compression fracture adjacent to lumbar instrumented circumferential fusion

The purpose of this study was to evaluate the efficacy and safety of percutaneous vertebroplasty for patients with symptomatic osteoporotic vertebral compression fractures adjacent to lumbar instrumented circumferential fusion. Between January 2005 and June 2010, eighteen patients in the authors' institution with lumbar instrumented circumferential fusion had adjacent symptomatic osteoporotic vertebral compression fractures. The patients received percutaneous vertebroplasty using polymethylmethacrylate bone cement augmentation. Radiographs and magnetic resonance imaging were used. The visual analog pain scale and modified Brodsky's criteria were used to compare clinical outcomes pre- and postoperatively. Minimum follow-up was 18 months. Dual-energy x-ray absorptiometry scan confirmed osteoporosis in all patients. The average interval between fusion surgery and sustaining osteoporotic vertebral compression fractures was 24.8 months. The average interval between sustaining osteoporotic vertebral compression fractures and undergoing percutaneous vertebroplasty was 49.3 days. One-level percutaneous vertebroplasty was performed in 13 patients, and 2 levels were performed in 5 patients. The patients' visual analog pain scale scores improved by an average of 53 points postoperatively. Fifteen patients returned to preinjury activities of daily living. The average restoration of the fractured vertebral body height was 12.1%. No major surgery-related complications, occurred except asymptomatic cement leakage in 3 patients. Elderly patients undergoing lumbar instrumented fusion surgery should be aware of the possibility of adjacent vertebral compression fractures. Percutaneous vertebroplasty is a minimally invasive and effective procedure to treat such adjacent segment disease.     

陈旧性与新鲜性压缩骨折行椎体成形术的临床对比研究

目的回顾性对比研究陈旧性与新鲜性椎体压缩性骨折行经经皮椎体成形术（percutaneouss vertebra plasty,PVP）后的临床效果。方法对24例老年骨质疏松性胸腰椎压缩性骨折患者行PVP治疗,将研究对象按陈旧性骨折和新鲜性骨折分为2组,分别拍摄2组术前、术后标准正侧位X线片,从而对骨折椎体高度的恢复、后凸畸形的矫正及疼痛视觉模拟量表（visual analogue scale,VAS）评分进行研究对比。结果所有患者术后平均随访6个月,无严重并发症发生。2组患者术后疼痛缓解且恢复良好,均恢复日常活动能力。但陈旧性压缩性骨折患者术后椎体高度恢复和后凸畸形的矫正程度均不如新鲜性骨折患者。结论 PVP术操作简单、创伤小,对于骨质疏松性椎体压缩性骨折的治疗效果明显,尤其对新鲜骨折效果显著,且对于缓解陈旧性骨折疼痛症状也有良好效果。     

改良法经皮椎体成形术治疗骨质疏松性椎体重度压缩骨折

目的探讨改良法经皮椎体成形术(PVP)治疗骨质疏松性椎体重度压缩骨折的可行性、疗效及椎体高度的变化。方法回顾性分析应用改良法PVP治疗的36例骨质疏松症患者并46节重度压缩骨折椎体的临床及影像学资料。患者术前接受二维CT及MR检查。术中采用单侧跨中线穿刺,注射骨水泥前摒弃椎体骨静脉造影。术后1日复查二维CT。于CT矢状面图像测量椎体高度,并比较PVP术前及术后椎体前缘、中央和后缘的高度变化。结果 36例患者采用单侧跨中线穿刺治疗全部成功,椎体前缘、中央、后缘恢复高度分别为(2.37±2.10)mm、(2.61±2.21)mm、(0.23±0.44)mm。随访1～29个月,完全缓解(CR)、部分缓解(PR)和无效(NR)例数分别为27例、8例、1例,总有效率为97.22%。结论改良法PVP治疗骨质疏松性椎体重度压缩骨折可行、有效,可提高压缩椎体的高度。     

Percutaneous vertebroplasty for the treatment of osteoporotic burst fractures

Background  Vertebroplasty is a minimally invasive surgical procedure which involves injecting polymethylmethacrylate into the compressed vertebral body. At present the indications include the treatment of osteoporotic compression fractures, vertebral myeloma, and metastases. The value of vertebroplasty in osteoporotic compression fracture has been discussed comprehensively. The surgical operation for burst fractures without neurological deficit remains controversial. Some authors have asserted that vertebroplasty is contraindicated in patients with burst fracture. However, we performed the procedure, after considering the patents general condition, to reduce surgical risks and the duration of immobilisation. The purpose of this study is to investigate clinical outcomes, kyphosis correction, wedge angle, and height restoration of thoraco-lumbar osteoporotic burst fractures treated by percutaneous vertebroplasty. Materials and methods  Twenty-five patients with osteoporotic burst fracture were treated with postural reduction followed by vertebroplasty. We measured the kyphosis, wedge angle, spinal canal compromise and the height of the fractured vertebral body initially, after postural reduction, and after vertebroplasty. Findings  The average height of the collapsed vertebral bodies was 24.8% of the original height. Average kyphosis angle was 19.4° and average wedge angle was 19.8° at first. Mean canal encroachment was initially 25.1%. Kyphosis angle, wedge angle, and anterior, middle, and posterior height improved significantly after the procedure. The mean amelioration of the spinal canal encroachment after vertebroplasty was 23.3%. The average increase in anterior vertebral body height was 7.5 mm, central was 5.8 mm, and posterior was 0.9 mm. The mean reduction in kyphosis angle was 6.8° and the mean reduction in wedge angle was 9.7°. Conclusion  Although vertebroplasty has been considered as contraindicated in thoraco-lumbar burst fractures, we successfully used the procedure as a safe treatment in patients with osteoporotic burst fracture without neurologic deficit. This method could eliminate the need for and risks of major spinal surgery. We would like to offer it as a relatively safe and effective methods of management in thoraco-lumbar burst fractures.     

闭合复位及撬拨法在椎体成形术中的应用

目的 探讨闭合复位及撬拨法在椎体成形术治疗骨质疏松性压缩骨折中椎体高度的恢复及后凸畸形矫正的效果.方法 2005年1月至2007年6月应用闭合复位及椎体成形术中经椎弓根用穿刺针撬拨塌陷的椎体终板治疗38例骨质疏松性压缩骨折患者,手术前后用视觉模拟评分及Oswestry功能障碍指数的变化来评价患者疼痛缓解和功能改善情况,参照Lee等方法观测病椎的高度和后凸畸形的改变以及骨水泥在椎体内的分布. 结果术后随访6～24个月,平均13.4个月.视觉模拟评分从术前平均(8.6±2.3)分降至术后平均(3.8±2.6)分,差异有统计学意义(P<0.05);Oswestry功能障碍指数指数从术前平均64.8%降至术后平均48.7%,差异有统计学意义(P<0.05).椎体前、中、后壁高度平均增加5.8mm、6.6mm、1.0mm,椎体后凸畸形矫正平均9.7°,椎体高度前、中、后壁恢复率平均为54.6%、58.1%、46.5%,手术前后差异均有统计学意义(P<0.05). 结论闭合复位结合椎体成形术中撬拨法是治疗骨质疏松性压缩骨折的有效方法.     

三维CT与C型臂X线机引导椎体成形术治疗椎体骨质疏松性骨折的比较分析

目的比较分析三维CT与C型臂X线机引导经皮椎体成形术(percutaneous vertebro-plasty,PVP)治疗骨质疏松性椎体压缩骨折的疗效和特点。方法 60例骨质疏松性椎体压缩骨折患者随机分成两组,每组30例,分别以三维CT和C型臂X线机引导经皮椎体成形术,记录手术时间、穿刺次数、骨水泥注射量。术前及术后1 d进行疼痛视觉类比评分(VAS),测量伤椎高度,随访伤椎高度丢失情况。结果随访9～24个月,平均13个月。两组患者均无严重并发症发生,术后疼痛视觉类比评分(VAS)、伤椎高度均较术前明显改善,至末次随访仍效果良好。两组术中比较三维CT引导穿刺准确度高,手术时间较短,但骨水泥注射量较C型臂X线机组少。结论三维CT与C型臂X线机引导经皮椎体成形术疗效无差别,三维CT引导穿刺准确率更高,C型臂X光机引导能够实时监控骨水泥注射过程。     

The dynamic mobility of vertebral compression fractures.

We have observed that some osteoporotic vertebral compression fractures (VCFs) are mobile. The purpose of this report was to document the existence of dynamic fracture mobility, estimate the frequency of dynamic mobility in patients referred for vertebroplasty, define the magnitude and nature of dynamic mobility, and consider the implications of the dynamic mobility of osteoporotic VCFs. This was a prospective radiographic analysis of 41 consecutive patients with 65 VCFs who underwent vertebroplasty. Preoperative standing lateral radiographs of the fractured vertebrae were compared with supine cross-table lateral radiographs to determine the presence or absence of dynamic mobility. Postoperative standing lateral radiographs were evaluated to document fracture mobility and assess final vertebral height restoration. Radiographs were manually digitized to calculate vertebral body morphometrics. Dynamic fracture mobility was demonstrated in 44% of patients (35% of treated vertebrae) who underwent vertebroplasty. Postoperatively, in mobile fractures, average anterior vertebral height increased 106% compared with initial fracture height (absolute increase, 8.41 +/- 0.4 mm). Mean lateral vertebral area increased from 48% to 80% of normal, and kyphotic angle decreased 40%. Mobile fractures dominated at the thoracolumbar junction. Intravertebral clefts were defined and identified in every mobile fracture and were absent from every nonmobile (fixed) fracture. This radiographic series documents the previously unrecognized occurrence of dynamic fracture mobility in many osteoporotic VCFs. Fracture mobility can be substantial and clinically significant. Any intervention that claims vertebral height restoration must control for the occurrence of dynamic fracture mobility.     

Minimally invasive treatment of osteoporotic vertebral body compression fractures.

BACKGROUND CONTEXT: Seven hundred thousand osteoporotic compression fractures occur yearly. Approximately 260,000 lead to severe pain, and 150,000 require hospital admissions. Associated with the fractures are increased loss of pulmonary function (90% decreased forced vital capacity per fracture level) and an increase in gastrointestinal complications (early satiety, and therefore malnutrition) and increased mortality (greater than that associated with osteoporotic hip fractures). New treatments available for these painful disorders include kyphoplasty and vertebroplasty. The injections of polymethylmethacrylate into the vertebrae (vertebroplasty technique) decrease pain and improve function. Kyphoplasty (percutaneous placement of a balloon tamp to improve height and create a void, and then the filling of this void with cement) improves function, decreases pain and helps realign the spine. PURPOSE: To compare kyphoplasty and vertebroplasty, and assess their various merits, treatment indications, and outcomes. STUDY DESIGN/SETTING: Literature review with presentation of early results of a national, clinical study. METHODS: Literature review for overview. Retrospective chart/patient review for clinical data presented on kyphoplasty. RESULTS: Ninety-five percent of individuals treated for painful osteoporotic compression fractures have significant improvement in symptoms and function after kyphoplasty or vertebroplasty. Kyphoplasty improves vertebral body height and kyphotic alignment by 50%, if performed within 3 months of the onset of the fracture collapse. CONCLUSIONS: Vertebroplasty and kyphoplasty both have roles in the treatment of painful osteoporotic compression fractures. Only kyphoplasty helps improve height and kyphosis, which should help prevent pulmonary and gastrointestinal complications.     

四步法单侧入路椎体成形术在胸椎骨质疏松性骨折中的应用

目的探讨四步法单侧入路的经皮椎体成形术(PVP)在胸椎骨质疏松性骨折中的应用。方法运用四步法,对胸椎骨质疏松性骨折椎体进行单侧入路的经皮椎体成形术,计录手术时间,观察骨水泥弥散分布情况,在术前、术后3 d、术后12个月随访时进行疼痛视觉类比评分(VAS)。结果18例21个椎体操作均成功,手术时间10~25 min,平均(16±2.2)min,骨水泥在椎体内弥散分布均越过椎体中线,VAS评分由术前(8.5±1.2)分降低至(2.5±1.4)分,术后效果良好。结论四步法单侧入路椎体成形术治疗胸椎骨质疏松性骨折简单快速、安全有效。     

经皮椎体成型术在骨质疏松性椎体压缩骨折中的临床应用分析

目的探讨经皮椎体成型术在骨质疏松性椎体压缩骨折中的临床疗效。方法对笔者所在医院就诊的18例患者采用经皮椎体成型术治疗骨质疏松性胸腰椎压缩骨折,手术在C臂机监测下,经皮向椎体内穿刺并注入骨水泥,并对患者术后椎体疼痛症状及椎体前缘高度进行分析。结果术后全部患者获得随访,随访时间1～18个月,平均11个月,患者腰背部疼痛明显好转,椎体前缘高度无明显继发丢失,椎体后凸角度无明显增大。结论经皮椎体成型术治疗骨质疏松性椎体压缩骨折安全有效,疗效满意。     

经皮椎体成形术与经皮后凸成形术治疗胸腰椎压缩性骨折

目的探讨经皮椎体成形术（percutaneous vertebroplasty,PVP）及经皮后凸成形术（percutaneous kyphoplasty,PKP）治疗骨质疏松性胸腰椎压缩性骨折的临床疗效。方法回顾性分析行PVP或PKP治疗骨质疏松性胸腰椎骨折的患者38例,共54个节段,临床均表现为腰背部痛,且无神经症状及体征。其中33个节段采用PKP治疗,21个节段采用PVP治疗。结果术后1个月门诊随访患者疼痛视觉模拟量表（visual analogue scale,VAS）与活动能力评分均较术前明显改善,未发生骨水泥渗漏及神经受损等症状。术后3个月复查未见椎体压缩。结论应用PVP或PKP治疗骨质疏松性胸腰椎压缩性骨折应用PVP或PKP可有效缓解疼痛,恢复椎体高度。     

经皮椎体成形术后椎体再发骨折的危险因素分析

目的探讨经皮椎体成形（PercutaneousVertebroplasty,PVP）术后椎体再发骨折的发生机制及危险因素。方法回顾分析我院2006—03—2011-01月行经皮椎体成形术患者96例（137个椎体）,动态监测其术后状态及正常椎体再发骨折情况,对患者年龄,性别,骨密度,初始骨折的节段,骨水泥注入量,骨水泥椎间隙渗漏,局部矢状面后凸成角,椎体高度恢复、抗骨质疏松治疗进行统计学分析。结果术后21例病人32个椎体新发骨折,其中18个椎体为邻近椎体,低骨密度、椎体高度过度．恢复、骨水泥渗漏有统计学意义（P〈0．05）。结论低骨密度、椎体高度过度恢复、骨水泥椎间隙渗漏是PVP术后新发椎体骨折的独立危险因素。术后坚持抗骨质疏松药物治疗能够降低新发椎体骨折的发生。     

骨质疏松性胸腰椎骨折椎体强化术后发生邻近椎体骨折的危险因素分析

目的 探讨骨质疏松性椎体压缩性骨折(osteoporotic vertebral compression fracture,OVCF)病人椎体强化术治疗后发生邻近椎体骨折的高危因素.方法 回顾性研究2012年3月至2014年8月苏北人民医院骨科收治的OVCF病人200例(263椎),收集病人的年龄、性别、椎体高度恢复、Cobb角、脊柱侧凸畸形、骨折病史、骨水泥量、骨水泥渗漏、骨密度等资料,应用单因素分析观察每种因素与椎体再骨折发生的相关性,筛查出可疑的相关因素,然后采用多因素Logistic回归分析得出影响椎体强化术后发生邻近椎体骨折的高危因素.结果 所有病人均获2年以上随访,平均随访时间为2.5年.共35例(45椎)发生再骨折,再骨折率为17.5%.单因素统计分析发现对椎体成形术后邻近节段再发骨折有影响的变量有:年龄、椎体高度恢复、Cobb角恢复、脊柱侧凸畸形、骨折病史、骨水泥渗漏、骨密度.多因素Logistic回归分析结果显示,年龄(OR:1.08,95%CI:1.04~1.13)、椎体高度恢复(OR:1.06,95%CI:1.01~1.11)、Cobb角(OR:4.03,95%CI:1.21~13.40)、脊柱侧凸畸形(OR:2.56,95%CI:1.12~5.85)和发生骨水泥渗漏(OR:6.25,95%CI:0.04~0.73)是发生再骨折的危险因素,而骨密度(OR:0.37,95%CI:0.22~0.65)是发生再骨折的保护因素.结论 年龄越大、椎体高度恢复越高、Cobb角越大、骨密度越低、有脊柱侧凸畸形和骨水泥渗漏的病人更容易发生术后邻近椎体再骨折.     

骨质疏松性压缩骨折椎体成形术后再发椎体骨折

目的研究椎体骨质疏松性压缩骨折行椎体成形术后再发骨折的规律及相关危险因素。方法 2005年12月至2009年8月,收治外伤所致胸腰椎骨质疏松性压缩骨折行PVP治疗并资料完整的病例218例,其中男44例,女174例;年龄48～82岁,平均72.1岁。收集术前、术后1d、末次随访（至少18个月）时影像资料,对新发骨折情况进行统计分析。结果 218例（286个椎体）患者中,有22例患者进行2次以上PVP治疗,60.7%的新发椎体骨折为相邻椎体骨折;相邻椎体新发骨折较非相邻椎体新发骨折发生更快（P〈0.001）;在椎体骨折2次以上的病例,高龄、低骨密度的病例再发椎体骨折比例较大（P〈0.005）;将单次及多次骨折（2次以上）两组病例比较,性别和骨水泥注入量无明显差异（P〉0.05）。结论椎体成形术后数年内易新发椎体骨折,其中相邻椎体骨折所占比例更大,且发生更快;高龄、低骨密度的患者再发骨折可能性更大。椎间盘骨水泥渗漏亦对相邻椎体骨折的发生起重要影响。     

骨水泥椎间渗漏与椎体成形术术后再发椎体压缩骨折相关性研究

目的 评估骨水泥椎间渗漏与椎体成形术（percutaneous vertebroplasty,PVP）术后再发椎体压缩骨折风险的相关性.方法对2009年6月～2011年6月行PVP手术治疗的153例骨质疏松性椎体压缩骨折患者进行回顾性研究,根据椎体再发骨折情况分为再发骨折组与对照组,记录2组患者骨密度、骨水泥注射量与骨水泥椎间隙渗漏情况.结果共124例患者（148个椎体）获得完整随访,平均随访18个月;24例患者（32个椎体）再发椎体压缩骨折.再发椎体压缩骨折患者骨水泥椎间渗透率为25.0%（6/24）与对照组的21.0%（21/100）差异无统计学意义（P＞0.05）.再发椎体压缩骨折患者骨密度低于对照组,差异有统计学意义（P＜0.05）.结论 骨水泥椎间渗漏并不增加PVP术后再发椎体压缩骨折风险,低骨密度是再发椎体骨折的危险因素.     

单侧穿刺囊袋加压椎体成形术治疗胸腰椎骨质疏松性骨折

目的探讨单侧穿刺囊袋加压椎体成形术治疗胸腰椎骨质疏松性骨折的临床疗效。方法对35例胸腰椎骨质疏松性骨折患者行单侧穿刺囊袋加压椎体成形术治疗。观察骨水泥渗漏情况、疼痛VAS评分和伤椎椎体高度恢复情况。结果患者均顺利完成手术。手术时间35~96(52.20±15.59)min;术中出血量2~15(6.06±2.66)ml。未出现骨水泥渗漏及肺栓塞。患者均获得随访,时间12~24(17.00±3.33)个月。术后3 d、术后1个月及末次随访时,VAS评分较术前明显下降(P<0.05),伤椎椎体前缘、中部高度比及Cobb角较术前明显改善(P<0.05)。结论单侧穿刺囊袋加压椎体成形术治疗胸腰椎骨质疏松性骨折具有微创、骨水泥渗漏率低、疗效确切的优点,但其安全性仍需大样本进行远期观察。