Decision-making in burst fractures of the thoracolumbar and lumbar spine

The most common site of injury to the spine is the thoracolumbar junction which is the mechanical transition junction between the rigid thoracic and the more flexible lumbar spine. The lumbar spine is another site which is more prone to injury. Absence of stabilizing articulations with the ribs, lordotic posture and more sagitally oriented facet joints are the most obvious explanations. Burst fractures of the spine account for 14% of all spinal injuries. Though common, thoracolumbar and lumbar burst fractures present a number of important treatment challenges. There has been substantial controversy related to the indications for nonoperative or operative management of these fractures. Disagreement also exists regarding the choice of the surgical approach. A large number of thoracolumbar and lumbar fractures can be treated conservatively while some fractures require surgery. Selecting an appropriate surgical option requires an in-depth understanding of the different methods of decompression, stabilization and/or fusion. Anterior surgery has the advantage of the greatest degree of canal decompression and offers the benefit of limiting the number of motion segments fused. These advantages come at the added cost of increased time for the surgery and the related morbidity of the surgical approach. Posterior surgery enjoys the advantage of being more familiar to the operating surgeons and can be an effective approach. However, the limitations of this approach include inadequate decompression, recurrence of the deformity and implant failure. Though many of the principles are the same, the treatment of low lumbar burst fractures requires some additional consideration due to the difficulty of approaching this region anteriorly. Avoiding complications of these surgeries are another important aspect and can be achieved by following an algorithmic approach to patient assessment, proper radiological examination and precision in decision-making regarding management. A detailed understanding of the mechanism of injury and their unique biomechanical propensities following various forms of treatment can help the spinal surgeon manage such patients effectively and prevent devastating complications.     

胸腰椎爆裂骨折的治疗和展望

胸腰椎爆裂骨折占胸腰椎骨折的50%以上,其经常导致神经损伤和脊柱后凸畸形,对于每一种类型的骨折其治疗方法各不相同,目前应用于临床的方法有保守疗法、前路手术、后路手术、前后路联合手术及微创手术,然而最佳的治疗方法仍然是不明确的,没有一种精确的分型来指导爆裂骨折的治疗及手术方式的选择。文章综述了胸腰椎爆裂骨折的治疗进展。有研究表明无神经损伤的稳定型爆裂骨折保守治疗和手术治疗并无明显差别。伴有神经损伤的不稳定型爆裂骨折早期手术减压和稳定是应当考虑的,有研究表明对于短节段固定联合各种不同方式的椎体成形术重建前柱可以明显减少内固定失败及远期脊柱后凸畸形的发生率而受到广大脊柱外科医生的推崇。按照生物力学原理及考虑到患者固定节段后相邻节段退变的发生,非融合技术已逐渐应用于临床,其远期疗效尚需进一步研究证实。     

Relationship between the functional outcomes and radiological results of conservatively treated displaced proximal humerus fractures in the elderly: A prospective study

Purpose:

The purpose of this prospective study is to investigate the relationship between the functional outcome and the radiographic results of conservatively treated two-, three- and four-part proximal humeral fractures in patients aged over 65 years.

Materials and Methods:

The study comprised 29 prospectively followed cases aged over 65 years who presented with displaced proximal humerus fracture between 2009 and 2011. The fractures were classified according to the Neer classification and all met the displacement criteria described by Neer. Standard physical therapy program was applied. Patients were evaluated clinically using Constant shoulder score, quick form of disabilities of arm, shoulder and hand score and visual analog scale. At the final follow-up, humeral head position in the coronal plane was assessed with neck-shaft angle. Any complication was recorded during the treatment period. Correlation between the functional outcomes and final radiologic results were statistically analyzed.

Results:

Data were analyzed from 29 cases (21 female, 8 male) with a mean age was 78 ± 8.6 years (range 65-93 years). The mean follow-up period was 18.2 ± 4.07 months (range 12-26 months). Functional results were significantly related with initial fragmentation. However, there was no correlation between the functional outcomes and the final geometry of the humeral head. Despite the union occurred with deformity, the functional outcome were satisfactory.

Conclusion:

The results of this study show that initial fragmentation has a negative effect on the functional results. However, the changed position of the humeral head on coronal plane does not affect the final functional results.     

多节段胸腰椎脊柱骨折的手术治疗

目的探讨椎弓根钉棒系统治疗多节段胸腰椎脊柱骨折的手术方式与疗效。方法采用后路切开复位、椎弓根钉棒系统内固定、选择性椎管减压及后外侧植骨融合手术治疗44例多节段胸腰椎骨折患者,对患者术前与随访时的ASIA分级、伤椎椎体高度矫正率进行分析。结果全部患者平均随访12个月,未发现内固定物松动、断裂,椎体高度由术前平均49.3%恢复至术后平均92.5%。ASIA分级较术前平均提高1.2级。结论后路切开复位、椎弓根钉棒系统内固定基础上选择性椎管减压＋植骨融合是治疗多节段胸腰椎脊柱骨折的理想选择。     

前路手术治疗胸腰椎爆裂性骨折

目的探讨前路手术治疗胸腰椎爆裂性骨折的手术时机、临床疗效和主要并发症。方法经前路椎管减压、复位矫形、自体髂骨植骨Z-p late内固定治疗胸腺椎爆裂性骨折20例。伤后4~72 h手术12例、10 d~6个月手术8例。结果1例手术中死亡。19例获3~18个月的随访,平均10个月。Frankel分级:A级1例无恢复;B级恢复到C级2例,恢复到D级1例;C级恢复到D级5例,恢复到E级2例;D级恢复到E级9例。术后摄片示椎管减压充分,后凸畸形完全纠正。3个月后植骨融合,Cobb角丢失6°~9°,平均7.3°。主要并发症为大出血、肋间神经痛、股外侧皮神经损伤。结论前路入路治疗胸腰椎爆裂性骨折临床疗效良好,新鲜的胸腰椎爆裂性骨折限期手术失血少。     

A functional outcomes survey of elderly patients who sustained distal radius fractures

Purpose  

This study aims to examine the subjective functional outcomes of patients 70 years or older who sustained distal radius fractures through the use of the Disability of the Arm, Shoulder, and Hand (DASH) and Short Form-8 Health (SF-8) surveys.     

AF钉内固定胸腰椎体骨折体会

2000年8月～2005年6月,笔者使用AF钉内固定治疗胸腰椎骨折29例,取得了满意效果.     

Near-anatomical reduction and stabilization of burst fractures of the lower thoracic or lumbar spine

Summary Thirty-one consecutive symptomatic patients with burst fractures of the lower thoracic or lumbar spine (T11-L4) were treated by early surgery in a 36-month period, with near-anatomical reduction being achieved via the postero-lateral route. Fusion and reconstruction of the vertebral body was done by using autologous or processed bovine bone. Correction of the kyphotic deformity was obtained by using distraction rods or transpedicular devices. The post-operative mean degree of kyphosis, percent vertebral height, and percent canal stenosis showed statistically significant differences, compared with the corresponding pre-operative mean values. All but one of the 25 patiens with incomplete paraplegia exhibited neurological improvement, with complete recovery occurring in 20 cases (median followup: 16 months) irrespective of the location of the lesion at the thoraco-lumbar junction (T11-L1) or the lower lumbar segment (L2-L4). Out of the 6 patients with pre-operative complete paraplegia, useful motor power returned in one case with a lesion below L1.The results confirm the suitability of the postero-lateral route and are consistent with the assumption that early near-anatomical reduction and stabilization favours maximum neurological recovery in symptomatic patients.     

前后联合入路治疗严重腰椎爆裂性骨折

目的 探讨前后联合入路治疗严重腰椎爆裂性骨折的疗效.方法 回顾性分析2000年2月至2006年12月收治并获得随访的34例严重腰椎爆裂性骨折患者,男31例,女3例;年龄23～48岁,平均35.4岁.损伤部位:L_1 10例,L_2 14例,L_3 6例,L_4 4例;骨折按AO分型均为A3型;脊髓神经损伤按Frankel分级:A级4例,B级10例,C级14例,D级6例.术前椎体前缘高度丢失37%～71%,平均丢失46.6%±5.1%;后凸Cobb角5°～45°,平均25.5°±3.1°;腰椎管骨块侵入占椎管矢状径百分比为57%～98%,平均72.5%±3.1%.其中采用一期前后路手术19例,分期前后路手术15例. 结果 手术时间3.5～5.0 h,平均4.3 h;术中出血1400～2200 mL,平均1700 mL;输血1000～1600 mL,平均1280mL.术后椎体前缘高度恢复至正常的95%～100%,平均98.6%;后凸Cobb角-11°～9°,平均-2.0°±1.1°,与术前比较差异均有统计学意义(P<0.05).29例椎管得到彻底减压,无骨折块占位,其余5例椎管侧方仍有少量骨块.所有患者随访11～84个月,平均42.5个月.最后随访时伤椎前缘高度及后凸Cobb无明显丢失,与术后比较差异无统计学意义(P>0.05).无假关节形成,未出现内固定松动、断裂现象.脊髓神经功能除4例A级无变化外,其余均有Ⅰ～Ⅲ级的恢复,最后恢复到C级2例,D级15例,E级13例. 结论 前后联合入路是治疗严重腰椎爆裂性骨折的有效方法 ,但应严格把握手术适应证.     

下腰椎爆裂性骨折的损伤特点和手术治疗选择

目的：探讨自行设计的下腰椎爆裂性骨折的评分系统用于指导手术方式选择的可行性。方法：回顾性分析2006年1月至2011年12月采用手术治疗,且资料完整的56例下腰椎单椎体爆裂性骨折病例,男42例,女14例;年龄19～65岁,平均43．1岁。高处坠落伤40例,交通伤12例,重物砸伤4例。损伤部位：L337例,L4 16例,L53例。按AO分型：A3．1型17例,A3．2型14例,A3.3型25例。脊髓神经功能按Frankel分级：B级2例,C级5例,D级9例,E级40例。按A0分型、后柱是否损伤及椎管占位程度进行综合评分,根据评分,分别选择跨伤椎固定、经伤椎置钉固定、联合后前入路和Ⅰ期后入路手术方式。对比术前、术后即刻和末次随访时Cobb角、伤椎前缘高度恢复及椎管占位情况的变化,观察植骨融合情况以及内固定是否存在弯曲、松动或断裂现象。采用Frankel分级标准评定脊髓神经恢复情况,末次随访时对患者的局部疼痛和工作状态进行评定。结果：56例切口无感染,未出现脊髓神经症状加重现象。均获得随访,随访时间12-60个月,平均28．5个月,随访期间未出现内固定松动或断裂现象。在Cobb角、椎体前缘高度及椎管占位恢复方面,术后即刻与术前相比,差异有统计学意义（P〈0．05）,术后即刻与末次随访时相比,差异无统计学意义（P〉0．05）。植骨融合情况：跨伤椎固定方式融合13例,经伤椎固定方式融合20例,联合后前入路和Ⅰ期后入路方式20例均获得植骨融合。脊髓神经功能有1-2级的恢复,C级1例,D级3例,E级52例。患者局部疼痛评定：Pl52例,P23例,P31例。工作状态分级：W112例,W239例,W35例。结论：由于下腰椎与胸腰段在解剖、生物力学方面的差异,其具有完全不同的损伤特点。而根据AO分型、后柱是否损伤及椎管占位程度进行的综合评分,是指导下腰椎爆裂性骨折手术治疗选择的较好方法,下腰椎爆裂性骨折应根据损伤程度而采用不同的手术方法。     

前路手术治疗胸腰椎爆裂性骨折不同方法的临床评价

目的评价胸腰椎爆裂性骨折前路手术减压植骨融合与加用脊柱椎体内固定两种手术方法的临床疗效。方法102例胸腰椎爆裂性骨折病例,52例行前路手术切除突入椎管内骨块减压,撑开骨折间隙取自体髂骨块结构性植骨;另50例在减压植骨融合的基础上放置椎体钢板加压固定。结果术后随访5～62个月,分别进行术后疼痛、功能恢复、下肢肌力与感觉情况、脊柱畸形发生率等评价,两组手术方法疗效差异无显著性。结论单纯行椎管减压植骨融合术可以达到与椎体钢板内固定手术相同的维持脊柱稳定的效果,同时缩短手术时间,减轻患者经济负担。两种方法比较,前者有更大的优越性。     

Long-term results of transpedicle body augmenter in treating burst fractures

Background:

Short-segment fixation alone to treat thoracolumbar burst fractures is common but it has a 20-50% incidence of implant failure and rekyphosis. A transpedicle body augmenter (TpBA) to reinforce the vertebral body via posterior approach has been reported to prevent implant failure and increase the clinical success rate in treating burst fracture. This article is to evaluate the longterm results of short-segment fixation with TpBA for treatment of thoracolumbar burst fractures.

Materials and Methods:

Patients included in the study had a single-level burst fracture involving T11-L2 and no distraction or rotation element with limited neurological deficit. Patients in the control group (n = 42) were treated with short-segment posterior instrumentation alone, whereas patients in the augmented group (n = 90) were treated with a titanium spacer designed for transpedicle body reconstruction. The followup was 48-101 months. The radiographic and clinical results were evaluated and compared by Student''s t test and Fisher''s exact test.

Results:

The blood loss, operation time and hospitalization were similar in both the groups. The immediate postoperative anterior vertebral restoration rate of the augmented group was similar to that of the control group (97.6% ± 2.4% vs. 96.6% ± 3.2%). The final anterior vertebral restoration was greater in the augmented group than in the control group (93.3% ± 3.4% vs. 62.5% ± 11.2%). Immediate postoperative kyphotic angles were not significantly different between the groups (3.0° ± 1.8° vs. 5.1° ± 2.3°). The final kyphotic angles were less in the augmented group than the control group (7.3° ± 3.5° vs. 20.1° ± 5.4°). The augmented group had less (P < 0.001) implant failure [0% (n=0) vs. 23.8% (n=10)] for the control group) and more patients (P < 0.001) with no pain or minimal or occasional pain (Grade P1 or P2) than the control group [90.0% (n=81) vs. 66.7% (n=28)]. All patients in the augmented group and 39 (92.8%) patients in the control group experienced neurological recovery to Frankel Grade E. Three patients in the control group had improvement to Frankel Grade D from Frankel Grade C, but later had deterioration to Frankel Grade C because of loosening and dislodgement of the implant.

Conclusion:

Posterior body reconstruction with TpBA can maintain kyphosis correction and vertebral restoration, prevent implant failure and lead to better clinical results.     

Short segment pedicle screw instrumentation and augmentation vertebroplasty in lumbar burst fractures: an experience

To assess the efficacy and feasibility of vertebroplasty and posterior short-segment pedicle screw fixation for the treatment of traumatic lumbar burst fractures. Short-segment pedicle screw instrumentation is a well described technique to reduce and stabilize thoracic and lumbar spine fractures. It is relatively a easy procedure but can only indirectly reduce a fractured vertebral body, and the means of augmenting the anterior column are limited. Hardware failure and a loss of reduction are recognized complications caused by insufficient anterior column support. Patients with traumatic lumbar burst fractures without neurologic deficits were included. After a short segment posterior reduction and fixation, bilateral transpedicular reduction of the endplate was performed using a balloon, and polymethyl methacrylate cement was injected. Pre-operative and post-operative central and anterior heights were assessed with radiographs and MRI. Sixteen patients underwent this procedure, and a substantial reduction of the endplates could be achieved with the technique. All patients recovered uneventfully, and the neurologic examination revealed no deficits. The post-operative radiographs and magnetic resonance images demonstrated a good fracture reduction and filling of the bone defect without unwarranted bone displacement. The central and anterior height of the vertebral body could be restored to 72 and 82% of the estimated intact height, respectively. Complications were cement leakage in three cases without clinical implications and one superficial wound infection. Posterior short-segment pedicle fixation in conjunction with balloon vertebroplasty seems to be a feasible option in the management of lumbar burst fractures, thereby addressing all the three columns through a single approach. Although cement leakage occurred but had no clinical consequences or neurological deficit.     

The analysis of the variables,affecting outcome in surgically treated tibia pilon fractured patients

Introduction

Treatment of tibia pilon fractures is challenging. Outcome after tibia pilon fractures depend on multiple factors. Aim of this study is to evaluate the potential variables that are known to affect the outcome after tibia pilon fractures.

Patients and methods

Forty patients with 42 tibia pilon fractures with a one-year follow-up, who had undergone surgical treatment between January 2007 and June 2011, were evaluated, retrospectively. Patients were divided into 3 groups regarding the choice of surgical treatment (Group A-22 patients treated with open reduction-internal fixation; Group B-9 patients treated with mini-open reduction-internal fixation and external fixation; and Group C-11 patients treated with closed reduction-external fixation). Fractures were classified using Müller-AO and Rüedi/Allgöwer classifications. Quality of reduction was evaluated using Ovadia and Beals’ criteria. All patients underwent functional assessment using AOFAS ankle-hindfoot scale and Teeny–Wiss scoring system at the last follow-up.

Results

Mean age of the patients was 49 (20–80). There were eight 43-B3, six 43-C1, twelve 43-C2 and sixteen 43-C3 fractures according to Müller-AO classification and ten type 1, ten type 2 and twenty two type 3 fractures according to Rüedi/Allgöwer classification. There were 15 (35.7%) open fractures. No statistically significant relation was found between quality of reduction and type of surgery. Also no significant relation was found between the type of surgery and functional scores. No significant correlation was found between functional scores and Müller-AO classification, but functional scores were found significantly worse in Rüedi/Allgöwer type 3 fractures. Functional scores were found significantly related to the quality of reduction. Early complications were seen in 22 and late complications were seen in 9 fractures. No statistically significant relation was found between complications, type of surgery and functional scores.

Conclusion

The most important factor affecting outcome in surgically treated tibia pilon fractures was quality of reduction. Poor functional scores were found independent from the type of surgery and quality of reduction in Rüedi/Allgöwer type 3 fractures, which was characterized with articular surface comminution and metaphyseal impaction.     

经椎旁肌间隙入路在胸腰椎骨折治疗中的应用

 目的 探讨经椎旁肌间隙入路治疗胸腰椎骨折的手术方法及其与传统手术方法的比较。方法 2006年 10月至 2008年 10月, 52例无神经损伤表现的胸腰椎骨折患者被纳入研究。±据 Denis骨折分型, 压缩型骨折 17例, 爆裂型骨折 35例, 其中男 37例, 女 15例;年龄 18耀59岁, 平均 46.5岁。 T4骨折 1例, T7骨折 2例, T8骨折 1例, T10骨折 3例, T11骨折 5例, T12骨折 14例, L1骨折 16例, L2骨折 9例, L3骨折 1例。影像学检查示: 椎管内占位约1/3, 突入椎管骨块均匀完整, 无碎裂及翻转。患者±次纳入研究, 分为两组, 其中 20例患者采用传统后正中入路, 其他 32例患者采用经椎旁肌间隙入路, 均行后路椎弓根螺钉固定。结果两组患者在性别、年龄、损伤节段、受伤至手术时间及随访时间方面比较, 差异均无统计学意义。经肌间隙入路较传统后正中入路在手术时间、术中出血量、引流放置时间、术后引流量、术后下地时间, 疼痛视觉模拟评分及 Oswestry功能障碍指数等方面具有显著优势, 两组间比较各项指标差异均有统计学意义。至 2009年 10月, 所有患者均获得随访, 平均时间 21.5个月(12耀36个月), 所有患者伤椎椎体高度均无丢失, 内固定无松动、断裂。结论与传统手术方法相比, 经椎旁肌间隙入路治疗胸腰椎骨折可完整保留脊柱后方复合体结构, 具有创伤小、出血少和恢复快等优点, 是一种安全实用的手术方法, 疗效满意。     

Nonoperatively treated burst fractures of the thoracic and lumbar spine in adults: a 23- to 41-year follow-up

BACKGROUND CONTEXT: Several studies report a favorable short-term outcome after nonoperatively treated two-column thoracic or lumbar burst fractures in patients without neurological deficits. Few reports have described the long-term clinical and radiological outcome after these fractures, and none have, to our knowledge, specifically evaluated the long-term outcome of the discs adjacent to the fractured vertebra, often damaged at injury and possibly at an increased risk of height reduction and degeneration with subsequent chronic back pain. PURPOSE: To evaluate the long-term clinical and radiological outcome after nonoperatively treated thoracic or lumbar burst fractures in adults, with special attention to posttraumatic radiological disc height reduction. STUDY DESIGN: Case series. PATIENT SAMPLE: Sixteen men with a mean age of 31 years (range, 19-44) and 11 women with a mean age of 40 years (range, 23-61) had sustained a thoracic or lumbar burst fracture during the years 1965 to 1973. Four had sustained a burst fracture Denis type A, 18 a Denis type B, 1 a Denis type C, and 4 a Denis type E. Seven of these patients had neurological deficits at injury, all retrospectively classified as Frankel D. OUTCOME MEASURES: The clinical outcome was evaluated subjectively with Oswestry score and questions regarding work capacity and objectively with the Frankel scale. The radiological outcome was evaluated with measurements of local kyphosis over the fractured segment, ratios of anterior and posterior vertebral body heights, adjacent disc heights, pedicle widths, sagittal width of the spinal canal, and lateral and anteroposterior displacement. METHODS: From the radiographical archives of an emergency hospital, all patients with a nonoperatively treated thoracic or lumbar burst fracture during the years 1965 to 1973 were registered. The fracture type, localization, primary treatment, and outcome were evaluated from the old radiographs, referrals, and reports. Twenty-seven individuals were clinically and radiologically evaluated a mean of 27 years (range, 23-41) after the injury. RESULTS: At follow-up, 21 former patients reported no or minimal back pain or disability (Oswestry Score mean 4; range, 0-16), whereas 6 former patients (of whom 3 were classified as Frankel D at baseline) reported moderate or severe disability (Oswestry Score mean 39; range, 26-54). Six former patients were classified as Frankel D, and the rest as Frankel E. Local kyphosis had increased by a mean of 3 degrees (p<.05), whereas the discs adjacent to the fractured vertebrae remained unchanged in height during the follow-up. CONCLUSIONS: Nonoperatively treated burst fractures of the thoracic or lumbar spine in adults with or without minor neurological deficits have a predominantly favorable long-term outcome, and there seems to be no increased risk for subsequent disc height reduction in the adjacent discs.     

经椎弓根硬膜前方减压治疗胸腰椎爆裂性骨折

目的探讨一种治疗胸腰椎爆裂性骨折的有效方法。方法2004年5月~2006年1月,行经椎弓根硬膜前方减压植骨治疗20例胸腰椎爆裂性骨折。其中,男13例、女7例;年龄为30~65岁,平均42.3岁。按照AO脊柱骨折分类:A318例、B21例、C21例。Frankel分级:A级4例、B级6例、C级5例、D级3例、E级2例。均行半椎板切除,经椎弓根硬膜前方减压植骨,辅以未减压侧后外侧植骨,全部加用椎弓根钉内固定。对后凸畸形的矫正、病椎压缩程度的恢复、脊髓神经功能的康复进行评估,观察融合情况。结果20例患者均获得随访,随访时间为6~15个月,平均8.3月。Frankel分级:A级2例、B级4例、C级5例、D级5例、E级4例。术后摄片示椎管减压充分,后凸畸形完全纠正。3个月后植骨明显融合,术后6月Cobb角丢失4°~9°,平均7.3°。结论在严格的掌握适应症的前提下,经椎弓根硬膜前方减压是一种安全有效的胸腰椎爆裂性骨折治疗方法。     

2种内固定方法治疗胸腰段椎体爆裂骨折的回顾性研究

目的 探讨短节段固定和长节段椎弓根内固定在治疗胸腰段椎体爆裂骨折的疗效。方法 回顾性分析自2006-03-2012-06行手术治疗的68例胸腰段椎体爆裂骨折的临床资料,对2组的手术时间、术中出血量、影像学指标以及脊髓功能恢复情况等进行比较。结果 65例获得随访,其中短节段固定组31例,长节段固定组34例,随访时间为12-37个月（平均18.4个月）。65例中出现断钉3例,均为短节段固定组,螺钉松动4例,其中1例为长节段固定组,3例为短节段固定组。短节段组的手术时间和术中平均出血量均要明显少于长节段组,2组间手术前后影像学指标（Cobb角、椎体前缘高度、椎管占位比）比较,差异无统计学意义（P〉0.05）。2组术后Cobb角以及椎管占位比均明显小于术前,椎体前缘高度相比术前则明显增加。2组神经功能恢复情况差异无统计学意义（P〉0.05）。结论 短节段固定与长节段椎弓根内固定治疗胸腰段椎体爆裂性骨折均能取得良好效果,短节段固定组创伤较小,但断钉或螺钉松动等并发症的发生率更高。     

椎弓根螺钉治疗胸腰椎爆裂型骨折

胸腰椎爆裂骨折往往伴有脊髓伸经损伤,目前公认的治疗方法是早期复位内固定,恢复脊柱的正常排列及椎管容积,使受损脊髓神经获得减压。2001年3月～2003年3月,笔者对37例胸腰椎爆裂型骨折患者采用椎弓根螺钉复位内固定,取得较好疗效。