Objective To investigate the feasibility and effectiveness of selective treatment of senile osteoporotic thoracolumbar burst fractures of Denis type B with kyphoplasty and Jack vertebral dilator. Methods Between August 2007 and May 2011, 30 patients (32 vertebra) with osteoporotic thoracolumbar burst fractures of Denis type B were treated with kyphoplasty and Jack vertebral dilator. There were 7 males and 23 females, aged 57-85 years (mean, 76.9 years). The injured vertebrae included T11 in 2 vertebrae, T12 in 11 vertebrae, L1 in 7 vertebrae, L2 in 5 vertebrae, L3 in 3 vertebrae, and L4 in 4 vertebrae. The visual analogue scale (VAS) score, Oswestry disability index (ODI), the anterior and middle height of the vertebral body, and the Cobb angle were assessed before and after operation. Results The operation was completed smoothly in all cases; no cement leakage or intraoperative complication was found. Obvious back pain relief was achieved in all patients after operation. Thirty patients were followed up at 1 week and 6 months after operation. The VAS score was decreased from 8.2 ± 1.3 before operation to 1.5 ± 0.9 at 1 week after operation and 1.9 ± 0.5 at 6 months after operation; the ODI was decreased from 82.4% ± 15.0% to 17.8% ± 9.5% and 23.0% ± 8.6%; the anterior height of the vertebral body was increased from (19.5 ± 3.2) mm to (24.8 ± 3.0) mm and (24.0 ± 2.6) mm; the middle height of the vertebral body was increased from (18.5 ± 3.4) mm to (23.7 ± 3.7) mm and (22.8 ± 3.5) mm; the Cobb angle was decreased from (14.9± 7.5)° to (7.6 ± 6.0)° and (8.3 ± 6.0)°; and there were significant differences in the VAS score, ODI, the anterior and middle height of the vertebral body, and the Cobb angle between at pre- and at post-operation (P lt; 0.05), but no significant difference between at 1 week and at 6 months after operation (P gt; 0.05). Conclusion Kyphoplasty with Jack vertebral dilator for selective treatment of senile osteoporotic thoracolumbar burst fractures of Denis type B can restore the anterior and middle height of the vertebral body, correct the Cobb angle, and relieve pain, and it has good short-term effectiveness and safety.
ObjectiveTo investigate the efficacy and safety of over-bending rod reduction and fixation technique via posterior approach in the treatment of unstable fresh thoracolumbar burst fracture.MethodsA clinical data of 27 patients with unstable fresh thoracolumbar burst fracture, who were met the inclusive criteria and admitted between January 2018 and October 2019, was retrospectively analyzed. There were 15 males and 12 females with an average age of 41.8 years (range, 26-64 years). The fractures were caused by falling from height in 14 cases, traffic accident in 8 cases, and crushing by a heavy objective in 5 cases. The interval between injury and operation was 1-7 days (mean, 3.2 days). The injured fracture was located at T10 in 1 case, T11 in 3 cases, T12 in 6 cases, L1 in 7 cases, L2 in 7 cases, and L3 in 3 cases. According to AO classification, there were 11 cases of type A3, 7 cases of type B, and 9 cases of type C. Neurological function was rated as grade A in 3 cases, grade B in 7 cases, grade C in 5 cases, and grade D in 12 cases according to the American Spinal Injury Association (ASIA) grading. All cases were treated by over-bending rod reduction and fixation technique via posterior approach, and 16 cases were combined with limited fenestration decompression. The evaluation indicators consisted of operation time, intraoperative blood loss, the compression ratio of the anterior vertebral height, the invasion rate of the injured vertebra into the spinal canal, the Cobb angle of segmental kyphosis, visual analogue scale (VAS) score, and Oswestry Disability Index (ODI).ResultsThe operation time was 67-128 minutes (mean, 81.6 minutes), and the intraoperative blood loss was 105-295 mL (mean, 210 mL). All patients were followed up 12-23 months (mean, 17.2 months). A total of 178 pedicle screws were implanted during operation, and the accuracy of the implantation was 98.9% (176/178). The compression ratios of the anterior vertebral height at the early postoperatively and last follow-up were significantly increased when compared with preoperative one (P<0.05), and the invasion rate of the injured vertebra into the spinal canal, Cobb angle, VAS score, and ODI were significantly lower than those preoperatively (P<0.05). Except that the ODI at last follow-up was significantly lower than that of the early postoperative period (P<0.05), there was no significant difference between the last follow-up and the early postoperative period for other indicators (P>0.05). At last follow-up, the neurological function was rated as grade A in 1 case, grade B in 2 cases, grade C in 4 cases, grade D in 9 cases, and grade E in 11 cases according to the ASIA grading, showing significant difference when compared with that before operation (Z=–3.446, P=0.001).ConclusionOver-bending rod reduction and fixation technique can effectively restore vertebral height, reset the invaded vertebral block, and selectively perform limited decompression and posterolateral bone grafting to ensure the completeness of intravertebral decompression and stability, which is one of the effective methods to treat unstable fresh thoracolumbar burst vertebral fracture.
Objective To assess the effectivness of different bone graft fusion ways in the treatment of thoracolumbar burst fractures. Methods Between June 2000 and June 2009, 126 cases of thoracolumbar burst fractures were treated by onestageposterior short segment internal fixation combined with bone graft fusion. All patients had acute spine and spinal injuryat the levels of T11-L2, who were with different degrees of neural function injury (below Frankel grade D). The patients were randomly divided into 3 groups and were treated respectively by centrum combined with interbody bone graft fusion (group A), posterolateral bone graft fusion (group B), and ring bone graft fusion (group C) combined with posterior short segment pedicle instrumentation. The changes of the Cobb angle, correction loss of Cobb angle, bone fusion rate, internal fixation failure rate, Oswestry Disabil ity Index (ODI), and Frankel grade of the fracture vertebral were observed after operation to evaluate the effectiveness of different bone graft fusion ways. Results All 126 cases were followed up 24-32 months (mean, 28 months). The operation time and bleeding volume in group C were significantly larger than those in groups A and B (P lt; 0.05), but no significant difference was found between groups A and B (P gt; 0.05). At 2 years after operation and last follow-up, the Cobb angle and correction loss in group B were significantly larger than those in groups A and C (P lt; 0.05), but there was no significant difference between groups A and C (P gt; 0.05). At last follow-up, the bone fusion rate and internal fixation failure rate were 100% and 0 in group A, 78.6% and 21.4% in group B, and 97.5% and 0 in group C; there were significant differences between group B and groups A, C (P lt; 0.05), but no significant difference was found between groups A and C (P gt; 0.05). ODI and Frankel grade were obviously improved after operation, showing significant differences between preoperation and last follow-up (P lt; 0.05) in 3 groups, between group B and groups A, C (P lt; 0.05), but no significant difference was found between groups A and C (P gt; 0.05). Conclusion The centrum combined with interbody bone graft fusion is best in 3 bone graft fusion ways because of its optimum bone fusion and according with human body biomechanics mechanism. Back outboard bone graft fusion may not a appropriate bone fusion way because of its high internal fixation failure rate and not according with human body biomechanics mechanism. The ring bone graft fusion may not be an indispensable bone fusion way because of its common bone fusion ratio and lower cost-performance ratio.
Objective To investigate the effect of the sequence of intermediate instrumentation with long screws and distraction-reduction on mild to moderate thoracolumbar fractures treated by posterior open and short-segmental fixation. MethodsThe clinical data of 68 patients with mild to moderate thoracolumbar burst fractures who met the selection criteria between January 2016 and June 2019 were retrospectively analyzed. The patients were divided into group ISDRF (intermediate screws then distraction-reduction fixation, 32 cases) and group DRISF (distraction-reduction then intermediate screws fixation, 36 cases) according to the different operation methods. There was no significant difference between the two groups in age, gender, body mass index, fracture segment, cause of injury, and preoperative load-sharing classification score, thoracolumbar injury classification and severity score, vertebral canal occupational rate, back pain visual analogue scale (VAS) score, anterior height of fractured vertebra, and Cobb angle (P>0.05). The operation time, intraoperative blood loss, complications, and fracture healing time were recorded and compared between the two groups. The vertebral canal occupational rate, anterior height of fractured vertebra, kyphosis Cobb angle, and back pain VAS score before and after operation were used to evaluate the effectiveness. Results There was no significant difference in intraoperative blood loss and operation time between the two groups (P>0.05). No vascular or spinal nerve injury and deep infections or skin infections occurred in both groups. At 1 week after operation, the vertebral canal occupational rate in the two groups was significantly improved when compared with that before operation (P<0.05), no significant difference was found in the difference of vertebral canal occupational rate before and after operation and improvement between the two groups (P>0.05). The patients in both groups were followed up 18-24 months, with an average of 22.3 months. All vertebral fractures reached bone union at 6 months postoperatively. At last follow-up, there was no internal fixation failures such as broken screws, broken rods or loose screws, but there were 2 cases of mild back pain in the ISDRF group. The intra-group comparison showed that the back pain VAS score, the anterior height of fractured vertebra, and the Cobb angle of the two groups were significantly improved at each time point postoperatively (P<0.05); the VAS scores at 12 months postoperatively and last follow-up were also improved when compared with that at 1 week postoperatively (P<0.05). At last follow-up, the anterior height of fractured vertebra in the ISDRF group was significantly lost when compared with that at 1 week and 12 months postoperatively (P<0.05), the Cobb angle had a significant loss when compared with that at 1 week postoperatively (P<0.05); the anterior height of fractured vertebra and Cobb angle in DRISF group were not significantly lost when compared with that at 1 week and 12 months postoperatively (P>0.05). The comparison between groups showed that there was no significant difference in the remission rate of VAS score between the two groups at 1 week postoperatively (P>0.05), the recovery value of the anterior height of fractured vertebra in ISDRF group was significantly higher than that in DRISF group (P<0.05), the loss rate at last follow-up was also significantly higher (P<0.05); the correction rate of Cobb angle in ISDRF group was significantly higher than that in DRISF group at 1 week postoperatively (P<0.05), but there was no significant difference in the loss rate of Cobb angle between the two groups at last follow-up (P>0.05). ConclusionIn the treatment of mild to moderate thoracolumbar burst fractures with posterior short-segment fixation, the instrumentation of long screws in the injured vertebrae does not affect the reduction of the fracture fragments in the spinal canal. DRISF can better maintain the restored anterior height of the fractured vertebra and reduce the loss of kyphosis Cobb angle during the follow-up, indicating a better long-term effectiveness.
Objective To evaluate the effectiveness of spinal canal decompression assisted by unilateral biportal endoscopy (UBE) and percutaneous uniplanar pedicle screw internal fixation in the treatment of lumbar burst fractures with neurological symptoms. Methods Between June 2021 and December 2022, 10 patients with single level lumbar burst fracture with neurological symptoms were treated with spinal canal decompression assisted by UBE and percutaneous uniplanar pedicle screw internal fixation. There were 7 males and 3 females with an average age of 43.1 years (range, 21-57 years). The injured vertebrae located at L1 in 2 cases, L2 in 4 cases, L3 in 3 cases, and L4 in 1 case. There were 7 cases of AO type A3 fractures and 3 cases of AO type A4 fractures. The total operation time, the time of operation under endoscopy, and complications were recorded. Pre- and post-operative visual analogue scale (VAS) score and American Spinal Injury Association (ASIA) scale (grading A-E corresponding to assigning 1-5 points for statistical analysis) were used to evaluate effectiveness. X-ray film and CT were performed to observe the fracture healing, and the ratio of anterior vertebral body height, Cobb angle, and rate of spinal canal invasion were measured to evaluate the reduction of fracture.Results All operations was successfully completed, and the spinal canal decompression and the bone fragment in spinal canal reduction completed under the endoscopy. Total operation time was 119 minutes on average (range, 95-150 minutes), and the time of operation under endoscopy was 46 minutes on average (range, 35-55 minutes). There was no complication such as dural sac, nerve root, or blood vessel injury during operation. All incisions healed by first intention. All patients were followed up 18.7 months on average (range, 10-28 months). The VAS score after operation significantly decreased when compared with that before operation (P<0.05), and further improved at last follow-up (P<0.05). The ASIA scale after operation significantly improved when compared with that before operation (P<0.05), and there was no significant difference (P>0.05) in the ASIA scale between at 1 week after operation and at last follow-up. The imaging examination showed that the screw position was good and the articular process joint was preserved. During follow-up, there was no loosening, fracture, or fixation failure of the internal fixation. The ratio of anterior vertebral body height and Cobb angle significantly improved, the rate of spinal canal invasion significantly decreased after operation (P<0.05), and without significant loss of correction during the follow-up (P>0.05). Conclusion Spinal canal decompression assisted by UBE and percutaneous uniplanar pedicle screw fixation is a feasible minimally invasive treatment for lumbar burst fractures with neurological symptoms, which can effectively restore the vertebral body sequence, as well as relieve the compression of spinal canal, and improve the neurological function.
Objective To assess the effectiveness of percutaneous pedicle screw fixation and minimally invasive decompression in the same incision for type A3 thoracolumbar burst fracture. Methods Between May 2014 and February 2016, 43 cases of type A3 thoracolumbar burst fracture with or without nerve symptoms were treated with pedicle screw fixation and neural decompression. Of them, 21 patients underwent percutaneous pedicle screw fixation and minimally invasive decompression in the same incision (percutaneous group), and the other 22 patients underwent traditional open surgery (open group). There was no significant difference in gender, age, cause of injury, fractures level, preoperative American Spinal Injury Association (ASIA) grade, thoracolumbar injury classification and severity (TLICS) score, load-sharing classification, height of injury vertebrae, kyphotic Cobb angle, and spinal canal encroachment between 2 groups (P>0.05). The length of soft tissue dissection, operation time, intraoperative blood loss, postoperative drainage, X-ray exposure times, and incision visual analogue scale (VAS) score at 1 day after operation were recorded and compared. At last follow-up, Japanese Orthopaedic Association (JOA) score and low back pain VAS score were recorded and compared respectively. The ASIA grade recovery was evaluated; the height of injury vertebrae, kyphotic Cobb angle, and spinal canal encroachment were assessed postoperatively. Results Percutaneous group was significantly better than open group in the length of soft tissue dissection, intraoperative blood loss, postoperative drainage, and incision VAS at 1 day after operation (P<0.05), but no significant difference was found in operation time between 2 groups (P>0.05); however, X-ray exposure times of open group were significantly better than that of percutaneous group (P<0.01). The patients were followed up 12 to 19 months (mean, 15.1 months) in 2 groups. All patients achieved effective decompression. No complications of iatrogenic neurological injury and internal fixation failure occurred. The height of injury vertebrae, kyphotic Cobb angle, and spinal canal encroachment of the fractured vertebral body were significantly improved at 3 days after operation when compared with preoperative ones (P<0.05), but no significant difference was found between 2 groups (P>0.05). At last follow-up, JOA score and low back pain VAS score of percutaneous group were significantly better than those of open group (P<0.05). The neurological function under grade E was improved at least one ASIA grade in 2 groups, but no significant difference was shown between 2 groups (Z=0.480, P=0.961). Conclusion Percutaneous pedicle screw fixation and minimally invasive decompression in the same incision for type A3 thoracolumbar burst fracture has satisfactory effectiveness. And it has the advantages of minimal trauma, quick recovery, safeness, and reliableness.
ObjectiveTo compare the effective of short-segment pedicle instrumentation with bone grafting and pedicle screw implanting in injured vertebra and cross segment pedicle instrumentation with bone grafting in injured vertebra for treating thoracolumbar fractures. MethodsA prospective randomized controlled study was performed in 40 patients with thoracolumbar fracture who were in accordance with the inclusive criteria between June 2010 and June 2012. Of 40 patients, 20 received treatment with short-segment pedicle screw instrumentation with bone grafting and pedicle screw implanting in injured vertebra in group A, and 20 received treatment with cross segment pedicle instrumentation with bone grafting in injured vertebra in group B. There was no significant difference in gender, age, affected segment, disease duration, Frankel grade, Cobb angle, compression rate of anterior verterbral height, visual analogue scale (VAS) score, and Japanese Orthopaedic Association (JOA) score between 2 groups before operation (P>0.05). The operation time, blood loss, Cobb angle, compression rate of anterior vertebral height, loss of disc space height, Frankel grade, VAS and JOA scores were compared between 2 groups. ResultsThere was no significant difference in the operation time and blood loss between 2 groups (P>0.05). Primary healing of incision was obtained in all patients, and no early complication of infection or lower limb vein thrombus occurred. Forty patients were followed up 12-16 months (mean, 14.8 months). No breaking or displacement of internal fixation was observed. The improvement of Frankel grading score was 0.52±0.72 in group A and 0.47±0.63 in group B, showing no significant difference (t=0.188, P=0.853) at 12 months after operation. The Cobb angle, compression rate of anterior verterbral height, and VAS score at 1 week and 12 months, and JOA score at 12 months were significantly improved when compared with preoperative ones in 2 groups (P<0.05). No significant difference was found in Cobb angle, disc space height, VAS score, and JOA score between 2 groups at each time point (P>0.05), but the compression rate of anterior verterbral height in group A was significantly lower than that in group B (P<0.05). The loss of disc space height next to the internal fixation or the injured vertebra was observed in 2 groups at 12 months, but showing no significant difference (P>0.05). ConclusionCompared with cross segment pedicle instrumentation, short-segment pedicle screw instrumentation with bone grafting and pedicle screw implanting in injured vertebra can recover and maintain the affected vertebra height in treating thoracolumbar fractures, but it could not effectively prevent degeneration of adjacent segments and the loss of kyphosis correction degree.
Objective To investigate the effect of preventing the loss of correction and vertebral defects after thoracolumbar burst fractures treated with recombinant human bone morphogenetic protein 2 (rhBMP-2) and allogeneic bone grafting in injured vertebra uniting short-segment pedicle instrumentation. Methods A prospective randomized controlled study was performed in 48 patients with thoracolumbar fracture who were assigned into 2 groups between June 2013 and June 2015. Control group (n=24) received treatment with short-segment pedicle screw instrumentation with allogeneic bone implanting in injured vertebra; intervention group (n=24) received treatment with short-segment pedicle screw instrumentation combining with rhBMP-2 and allogeneic bone grafting in injured vertebra. There was no significant difference in gender, age, injury cause, affected segment, vertebral compression degree, the thoracolumbar injury severity score (TLICS), Frankel grading for neurological symptoms, Cobb angle, compression rate of anterior verterbral height between 2 groups before operation (P>0.05). The Cobb angle, compression rate of anterior vertebral height, intervertebral height changes, and defects in injured vertebra at last follow-up were compared between 2 groups. Results All the patients were followed up 21-45 months (mean, 31.3 months). Bone healing was achieved in 2 groups, and there was no significant difference in healing time of fracture between intervention group [(7.6±0.8) months] and control group [(7.5±0.8) months] (t=0.336, P=0.740). The Frankel grading of all patients were reached grade E at last follow-up. The Cobb angle and compression rate of anterior verterbral height at 1 week after operation and last follow-up were significantly improved when compared with preoperative ones in 2 groups (P<0.05). There was no significant difference in Cobb angle and compression rate of anterior verterbral height between 2 groups at 1 week after operation (P>0.05), but the above indexes in intervention group were better than those in control group at last follow-up (P<0.05). At last follow-up, there was no significant difference of intervertebral height changes of internal fixation adjacent upper position, injured vertebra adjacent upper position, injured vertebra adjacent lower position, and internal fixation adjacent lower position between 2 groups (P>0.05). Defects in injured vertebra happened in 18 cases (75.0%) in control group and 5 cases (20.8%) in intervention group, showing significant difference (χ2=14.108, P=0.000); and in patients with defects in injured vertebra, bone defect degree was 7.50%±3.61% in control group, and was 2.70%±0.66% in intervention group, showing significant difference (t=6.026, P=0.000). Conclusion Treating thoracolumbar fractures with short-segment pedicle screw instrumentation with rhBMP-2 and allogeneic bone grafting in injured vertebra can prevent the loss of correction and vertebral defects.
Objective To discuss the improved method and effectiveness of posterior pedicle-screw fixation combined with restoring and grafting through the injured vertebrae for treating thoracolumbar burst fracture. Methods Between March 2008 and September 2010, 21 patients with thoracolumbar burst fracture were treated by posterior pedicle-screw fixationcombined with restoring and grafting through the injured vertebrae. Of 21 cases, 15 were male and 6 were female with an age range of 20-61 years (mean, 38.4 years). Affected segments included T12 in 5 cases, L1 in 7 cases, L2 in 5 cases, and T12-L1 in 4 cases. According to Frankel classification for neurological function, 2 cases were rated as grade A, 4 cases as grade B, 6 cases as grade C, 5 cases as grade D, and 4 cases as grade E; based on Denis classification, all 21 cases were burst fractures, including 7 cases of type A, 11 cases of type B, and 3 cases of type C. The X-ray film was taken to measure the relative height of fractured vertebrae and Cobb’s angle, and the function of the spinal cord was evaluated at preoperation, postoperation, and last followup. Results All the incisions healed primarily. The 21 patients were followed up 12-30 months (mean, 26 months). No loosening or breakage of screws and rods occurred. X-ray films showed good bone heal ing with the heal ing time from 12 to 23 months (mean, 16 months). The Cobb’s angles at 1 week and 1 year postoperatively were (3.4 ± 2.4)° and (5.2 ± 3.2)° respectively, showing significant differences when compared with preoperative angle (22.1 ± 1.2)° (P lt; 0.05), while no significant difference between 1 week and 1 year after operation (P gt; 0.05). The anterior height of injured vertebrae recovered from (14.6 ± 2.1) mm (40.2% ± 1.5% of the normal) at preoperation to (36.0 ± 2.0) mm (95.3% ± 1.3% of the normal) at 1 week, and to (35.0 ± 2.4) mm (94.4% ± 2.5% of the normal) at 1 year; significant differences were found between preoperation and postoperation (P lt; 0.05), while no significant difference between 1 week and 1 year after operation (P gt; 0.05). At 1 year after operation, the Frankel neurological function grade was improved in varying degrees, showing significant difference when compared with preoperative grade (χ2=11.140, P=0.025). Conclusion Improved method of posterior pedicle-screw fixation combined with restoring and grafting through the injured vertebrae in treatment of thoracolumbar burst fracture can reconstructthe anterior and middle column stabil ity and prevent loss of Cobb’s angle and height of vertebrae.
ObjectiveTo study the effectiveness of posterior laminotomy decompression and bone grafting via the injured vertebrae for treatment of thoracolumbar burst fractures. MethodsBetween November 2010 and November 2012, 58 patients with thoracolumbar burst fractures were treated by posterior fixation combined with posterior laminotomy decompression and intervertebral bone graft in the injured vertebrae. There were 40 males and 18 females with a mean age of 48 years (range, 25-58 years). According to Denis classification, 58 cases had burst fractures (Denis type B); based on neurological classification of spinal cord injury by American Spinal Injury Association (ASIA) classifications, 5 cases were rated as grade A, 18 cases as grade B, 20 cases as grade C, 14 cases as grade D, and 1 case as grade E. Based on thoracolumbar burst fractures CT classifications there were 5 cases of type A, 20 cases of type B1, 10 cases of type B2, and 23 cases of type C. The time between injury and operation was 10 hours to 9 days (mean, 7.2 days). The CT was taken to measure the space occupying of vertebral canal. The X-ray film was taken to measure the relative height of fractured vertebrae for evaluating the vertebral height restoration, Cobb angle for evaluating the correction of kyphosis, and ASIA classification was conducted to evaluate the function recovery of the spinal cord. ResultsThe operations were performed successfully, and incisions healed primarily. All the patients were followed up 12-18 months (mean, 15 months). CT showed good bone graft healing except partial absorption of vertebral body grafted bone; no loosening or breakage of screws and rods occurred. The stenosis rates of fractured vertebral canale were 47.56%±14.61% at preoperation and 1.26%±0.62% at 1 year after operation, showing significant difference (t=24.46, P=0.00). The Cobb angles were (16.98±3.67)° at preoperation, (3.42±1.45)° at 1 week after operation, (3.82±1.60)° at 1 year after operation, and (4.84±1.70)° at 3 months after removal of internal fixation, showing significant differences between at pre-and post-operation (P < 0.05). The relative heights of fractured vertebrae were 57.10%±6.52% at preoperation, 96.26%±1.94% at 1 week after operation, 96.11%±1.97% at 1 year after operation, and 96.03%±1.96% at 3 months after removal of internal fixation, showing significant differences between at pre-and post-operation (P < 0.05). At 1 year after operation, the neural function was improved 1-3 grades in 56 cases. Based on ASIA classifications, 1 case was rated as grade A, 4 cases as grade B, 10 cases as grade C, 23 cases as grade D, and 20 cases as grade E. ConclusionTreatment of thoracic and lumbar vertebrae burst fractures by posterior laminotomy decompression and bone grafting via the injured vertebrae has satisfactory effectiveness, which can reconstruct vertebral body shape and height with spinal cord decompression and good vertebral healing. It is a kind of effective solution for thoracolumbar burst fracture.