BACKGROUND We report a case of Intracardiac,pulmonary,and intravenous cement embolism after cement-augmented pedicle screw instrumentation in treating spondylolisthesis underlying osteoporotic bone,which was successfu...BACKGROUND We report a case of Intracardiac,pulmonary,and intravenous cement embolism after cement-augmented pedicle screw instrumentation in treating spondylolisthesis underlying osteoporotic bone,which was successfully managed by conservative treatment.We describe the treatment and outcome of the patient,hoping to shed light on the management of bone cement embolism.CASE SUMMARY A 67-year-old female suffered from progressive low back pain and numbness in lower extremities for 30 years.She was diagnosed with L4 and L5 spondylolisthesis,spinal stenosis,and osteoporosis.The patient underwent spinal canal decompression,an interbody fusion of L4/5 and L5/S1,cement-augmented pedicle screw instrumentation in L4-L5 segments,and regular pedicle screw in S1 segments.Three days postoperatively,a sudden drop in oxygen saturation occurred.Computerized tomography scan confirmed Intracardiac,pulmonary,and intravenous embolism.The patient was treated conservatively by continuous low-flow oxygen inhalation,anti-coagulation,and antibiotic therapy for 1 mo and continued anticoagulation treatment for 6 mo.The patient showed no further symptoms in a 30-mo follow-up.CONCLUSION Intracardiac,pulmonary cement embolism after cement-augmented pedicle screw instrumentation is extremely rare.Careful clinical and radiographic evaluation is required in multiple sites of bone cement embolism.Conservative treatment may be a primary consideration in scattered emboli without life-threatening conditions,but a clinical decision should be made on an individualized basis.展开更多
Objective To evaluate short-teerm clinical and radiographic results of a novel expandable pedicle screw instrumentation combined with cement augmentation in surgery for severely osteoporotic spine.Methods From October...Objective To evaluate short-teerm clinical and radiographic results of a novel expandable pedicle screw instrumentation combined with cement augmentation in surgery for severely osteoporotic spine.Methods From October 2006 to October展开更多
Objective:To introduce a key-vertebral-screws technique(KVST) in the surgical treatment of scoliosis extending to main thoracic levels, and to find the role of fulcrum bending in predicting the result of surgical trea...Objective:To introduce a key-vertebral-screws technique(KVST) in the surgical treatment of scoliosis extending to main thoracic levels, and to find the role of fulcrum bending in predicting the result of surgical treatment for scoliosis by this technique. Methods: Seventeen consecutive patients with scoliosis extending to main thoracic spine,who underwent pure posterior fusion without anterior or posterior release by KVST between January 2004 and July 2005 were evaluated for fulcrum bending flexibility, surgical correction rate, fulcrum bending correction index (FBCI) in main thoracic curves. Universal Spine System (USS) instrumentation was used in 15 cases,Monarch in another 2 cases. The severity of the curves was measured by Cobb's method using Rad Work 6. 0 software. Preoperative standing AP radiographs, preoperative fulcrum bending anterioposterior (AP) radiographs, postoperative standing AP radiographs, and most recent follow-up standing AP radiographs for spine were measured and recorded. All the data were analyzed with two-sample paired t-test by Origin 7. 0 software. Results: Infection and neurological complications were not noted. No major complications were found. Just one case had some axial back pain, which got a full recovery from physiotherapy for 2 weeks. In the X-ray, there was an average correction of 71. 5% of the fused main thoracic curves, which had no significant lose of correction in final follow-up. For the whole fused main thoracic curves, the fulcrum bending flexibility were lower to operation correction rate (P = 0. 013). The average FBCI was 123%. From the data, the more rigid curves (especially fulcrum bending flexibility <50%), the more correction rate operation could get, compared with fulcrum bending flexibility. Conclusion: (1) KVST is a good method in the surgical treatment of thoracic scoliosis, which can get satisfying result with lower medical cost. (2) Fulcrum bending flexibility is lower than operative correction rate by KVST in main thoracic curves (P<0. 05). In the more rigid curves assessed by fulcrum-bending radiograph, the operative corrective could be gained, especially in the curves which FBCI is lower than 50%.展开更多
目的:探讨后路侧弯全节段椎弓根螺钉固定矫治单胸弯特发性脊柱侧凸(AIS)时下固定融合椎(LIV)的选择.方法:2003年5月～2003年10月,采用侧弯全节段椎弓根螺钉固定矫治38例单胸弯AIS患者,其中,Lenke Ⅰ A 20例,Lenke Ⅰ B 18例,均采用站立...目的:探讨后路侧弯全节段椎弓根螺钉固定矫治单胸弯特发性脊柱侧凸(AIS)时下固定融合椎(LIV)的选择.方法:2003年5月～2003年10月,采用侧弯全节段椎弓根螺钉固定矫治38例单胸弯AIS患者,其中,Lenke Ⅰ A 20例,Lenke Ⅰ B 18例,均采用站立位胸弯下旋转中立椎(NV)结合骶正线的方法确定LIV.术前摄站立前后、侧位,卧位左右侧屈位片,术后2周、6个月、12个月摄站立前后位和侧位平片,观察手术前后的躯干平衡、失代偿情况.结果:围手术期未出现脊髓、神经根损伤等严重并发症,平均融合8.4个节段.胸弯由术前平均57.4°矫正至术后平均11.3°,腰弯由术前平均26.8°自发矫正至平均4.9°;下固定融合椎的倾斜角由术前平均18.1°纠正至平均3.5°.胸椎矢状面Cobb角由术前平均27.1°改善至平均32.3°;水平面顶椎旋转度由术前Ⅰ～Ⅲ度改善至0～Ⅰ度.经过1年以上的随访,仅1例患者出现轻度失代偿,其余患者躯干平衡良好,未发现失代偿现象.结论:采用后路侧弯全节段椎弓根螺钉技术矫治单胸弯AIS患者时结合站立位下NV和CSVL确定LIV,可在保证矫形效果的同时节省融合节段,保存更多的腰椎活动节段.展开更多
基金Fundamental Research Funds for the Central Universities,No.20ykpy94.
文摘BACKGROUND We report a case of Intracardiac,pulmonary,and intravenous cement embolism after cement-augmented pedicle screw instrumentation in treating spondylolisthesis underlying osteoporotic bone,which was successfully managed by conservative treatment.We describe the treatment and outcome of the patient,hoping to shed light on the management of bone cement embolism.CASE SUMMARY A 67-year-old female suffered from progressive low back pain and numbness in lower extremities for 30 years.She was diagnosed with L4 and L5 spondylolisthesis,spinal stenosis,and osteoporosis.The patient underwent spinal canal decompression,an interbody fusion of L4/5 and L5/S1,cement-augmented pedicle screw instrumentation in L4-L5 segments,and regular pedicle screw in S1 segments.Three days postoperatively,a sudden drop in oxygen saturation occurred.Computerized tomography scan confirmed Intracardiac,pulmonary,and intravenous embolism.The patient was treated conservatively by continuous low-flow oxygen inhalation,anti-coagulation,and antibiotic therapy for 1 mo and continued anticoagulation treatment for 6 mo.The patient showed no further symptoms in a 30-mo follow-up.CONCLUSION Intracardiac,pulmonary cement embolism after cement-augmented pedicle screw instrumentation is extremely rare.Careful clinical and radiographic evaluation is required in multiple sites of bone cement embolism.Conservative treatment may be a primary consideration in scattered emboli without life-threatening conditions,but a clinical decision should be made on an individualized basis.
文摘Objective To evaluate short-teerm clinical and radiographic results of a novel expandable pedicle screw instrumentation combined with cement augmentation in surgery for severely osteoporotic spine.Methods From October 2006 to October
文摘Objective:To introduce a key-vertebral-screws technique(KVST) in the surgical treatment of scoliosis extending to main thoracic levels, and to find the role of fulcrum bending in predicting the result of surgical treatment for scoliosis by this technique. Methods: Seventeen consecutive patients with scoliosis extending to main thoracic spine,who underwent pure posterior fusion without anterior or posterior release by KVST between January 2004 and July 2005 were evaluated for fulcrum bending flexibility, surgical correction rate, fulcrum bending correction index (FBCI) in main thoracic curves. Universal Spine System (USS) instrumentation was used in 15 cases,Monarch in another 2 cases. The severity of the curves was measured by Cobb's method using Rad Work 6. 0 software. Preoperative standing AP radiographs, preoperative fulcrum bending anterioposterior (AP) radiographs, postoperative standing AP radiographs, and most recent follow-up standing AP radiographs for spine were measured and recorded. All the data were analyzed with two-sample paired t-test by Origin 7. 0 software. Results: Infection and neurological complications were not noted. No major complications were found. Just one case had some axial back pain, which got a full recovery from physiotherapy for 2 weeks. In the X-ray, there was an average correction of 71. 5% of the fused main thoracic curves, which had no significant lose of correction in final follow-up. For the whole fused main thoracic curves, the fulcrum bending flexibility were lower to operation correction rate (P = 0. 013). The average FBCI was 123%. From the data, the more rigid curves (especially fulcrum bending flexibility <50%), the more correction rate operation could get, compared with fulcrum bending flexibility. Conclusion: (1) KVST is a good method in the surgical treatment of thoracic scoliosis, which can get satisfying result with lower medical cost. (2) Fulcrum bending flexibility is lower than operative correction rate by KVST in main thoracic curves (P<0. 05). In the more rigid curves assessed by fulcrum-bending radiograph, the operative corrective could be gained, especially in the curves which FBCI is lower than 50%.
文摘目的:探讨后路侧弯全节段椎弓根螺钉固定矫治单胸弯特发性脊柱侧凸(AIS)时下固定融合椎(LIV)的选择.方法:2003年5月～2003年10月,采用侧弯全节段椎弓根螺钉固定矫治38例单胸弯AIS患者,其中,Lenke Ⅰ A 20例,Lenke Ⅰ B 18例,均采用站立位胸弯下旋转中立椎(NV)结合骶正线的方法确定LIV.术前摄站立前后、侧位,卧位左右侧屈位片,术后2周、6个月、12个月摄站立前后位和侧位平片,观察手术前后的躯干平衡、失代偿情况.结果:围手术期未出现脊髓、神经根损伤等严重并发症,平均融合8.4个节段.胸弯由术前平均57.4°矫正至术后平均11.3°,腰弯由术前平均26.8°自发矫正至平均4.9°;下固定融合椎的倾斜角由术前平均18.1°纠正至平均3.5°.胸椎矢状面Cobb角由术前平均27.1°改善至平均32.3°;水平面顶椎旋转度由术前Ⅰ～Ⅲ度改善至0～Ⅰ度.经过1年以上的随访,仅1例患者出现轻度失代偿,其余患者躯干平衡良好,未发现失代偿现象.结论:采用后路侧弯全节段椎弓根螺钉技术矫治单胸弯AIS患者时结合站立位下NV和CSVL确定LIV,可在保证矫形效果的同时节省融合节段,保存更多的腰椎活动节段.
