Objective To evaluate surgical strategy of decompression via posterior-anterior approach and anterior fixation in treatment fracture-dislocation of lower cervical spine with bilateral facet joints dislocation. Methods...Objective To evaluate surgical strategy of decompression via posterior-anterior approach and anterior fixation in treatment fracture-dislocation of lower cervical spine with bilateral facet joints dislocation. Methods This展开更多
Anterior lumbar interbody fusion （ALiF） followed by posterior pedicle screw fixation （PSF） in a second procedure is mostly used to implement lumbar spine fusion. ALIF followed by an- terior lumbar screw-plate has ...Anterior lumbar interbody fusion （ALiF） followed by posterior pedicle screw fixation （PSF） in a second procedure is mostly used to implement lumbar spine fusion. ALIF followed by an- terior lumbar screw-plate has a lot of advantages, but its biomechanical stability requires confirma- tion. This study evaluated the biomechanical stability of a novel anterior lumbar locked screw-plate （ALLSP） by comparison with posterior lumbar PSF. Twelve fresh human cadaveric lumbar speci- mens （L4-L5） were assigned to four groups： ALIF^PSF group, ALIF＋ALLSP （both fixed） group, ALIF group and an untreated control （both non-fixed） group. The first three groups received implan- tation of a rectangular titanium cage. Tests under axial compression, flexion, extension, lateral bend- ing, or rotation showed that the fixed groups had significantly stronger stability than the non-fixed groups （P=-0.000 for all）. The ALIF＋ALLSP group had significantly greater axial stiffness under ap- plied axial compression and significantly less angular displacement under rotational forces than the ALIF＋PSF group. The angular displacement of the ALIF＋ALLSP group was less under flexion than that of the ALIF＋PSF, and the angular displacement under lateral bending and extension was greater, but these differences were not statistically significant. In summary, the ALLSP conforms to the ante- rior lumbar spine and has good biomechanical stability. It is a reliable choice for enhancing the sta- bility of ALIF.展开更多
Objective:To investigate a novel surgical method for multilevel cervical spondylotic myeIopa- thy(CSM).Methods:Totally 21 patients with multilevel CSM undergoing a novel surgical procedure from April 2001 to January 2...Objective:To investigate a novel surgical method for multilevel cervical spondylotic myeIopa- thy(CSM).Methods:Totally 21 patients with multilevel CSM undergoing a novel surgical procedure from April 2001 to January 2004 were analyzed retrospectively.All patients experienced anterior cervical decompression surgery in subsection,autograft fusion and internal fixation.Preoperative,immediate post- operative and follow-up image data,X-rays and semi-quantitative Japanese orthopaedics association(JOA) scores were used to evaluate the restoration of lordosis(Cobb's angle),intervertebral heights,the stabili- ty of the cervical spine and the improvement of neurological impairment.Results:Preoperative symptoms were markedly alleviated or disappeared in most of the patients.According to the JOA scores,the ratio of improvement in neurological function was 72.2%,including excellent in 9 cases(42.9%),good in 7 cases (33.30%),fair in 3 cases(14.3%)and poor in 2 cases(9.5%).Immediate postoperative X-rays showed obvious improvements in lordosis and in the intervertebral height of the cervical spine(P<0.01).There is no evidence of instrument failure during the mean follow-up period of 14.2 months(9-24 months, P>0.01).Conclusion:Anterior cervical decompression in subsection,autograft fusion and internal fixa- tion is a rational effective method for the surgical treatment of multilevel CSM.展开更多
To review the clinical efficacy of minimally invasive pedicle fixation combined with anterior small incision focus debridement for single-segment lumbar spine tuberculosis,a total of 31 patients with single-segment ma...To review the clinical efficacy of minimally invasive pedicle fixation combined with anterior small incision focus debridement for single-segment lumbar spine tuberculosis,a total of 31 patients with single-segment marginal lumbar tuberculosis were enrolled in the study.All the patients received quadruple anti-tuberculosis chemotherapy for 2 weeks before surgery and treatment with minimally invasive posterior internal fixation,anterior small incision focus debridement,and bone graft fusion.Those patients with preoperative kyphosis deformity were initially treated with appropriate posterior distraction correction.Except for 1 patient who healed 2 weeks after medical dressing change,the remaining30 patients healed as expected.All the patients had no screwrelated surgical complications,neurological dysfunction,vascular injury,and other complications.The average visual analog scale scores at 3 months postoperatively were significantly decreased to1.4±1.5(P<0.05).In conclusion,under the premise of treatment using appropriate,effective anti-tuberculosis agents,this surgical procedure for managing patients with lumbar vertebral tuberculosis achieved satisfactory results,effectively reducing the exposure range and fusion segments in simple anterior focus debridement and internal fixation.Using minimally invasive posterior pedicle screw fixation can effectively increase spine stability,reduce fusion segment,and decrease anterior surgical trauma and complications.展开更多
文摘Objective To evaluate surgical strategy of decompression via posterior-anterior approach and anterior fixation in treatment fracture-dislocation of lower cervical spine with bilateral facet joints dislocation. Methods This
基金supported by the Chongqing Key Tech nologies R&D Program(CSTC,No.2010AB5118-4)
文摘Anterior lumbar interbody fusion （ALiF） followed by posterior pedicle screw fixation （PSF） in a second procedure is mostly used to implement lumbar spine fusion. ALIF followed by an- terior lumbar screw-plate has a lot of advantages, but its biomechanical stability requires confirma- tion. This study evaluated the biomechanical stability of a novel anterior lumbar locked screw-plate （ALLSP） by comparison with posterior lumbar PSF. Twelve fresh human cadaveric lumbar speci- mens （L4-L5） were assigned to four groups： ALIF^PSF group, ALIF＋ALLSP （both fixed） group, ALIF group and an untreated control （both non-fixed） group. The first three groups received implan- tation of a rectangular titanium cage. Tests under axial compression, flexion, extension, lateral bend- ing, or rotation showed that the fixed groups had significantly stronger stability than the non-fixed groups （P=-0.000 for all）. The ALIF＋ALLSP group had significantly greater axial stiffness under ap- plied axial compression and significantly less angular displacement under rotational forces than the ALIF＋PSF group. The angular displacement of the ALIF＋ALLSP group was less under flexion than that of the ALIF＋PSF, and the angular displacement under lateral bending and extension was greater, but these differences were not statistically significant. In summary, the ALLSP conforms to the ante- rior lumbar spine and has good biomechanical stability. It is a reliable choice for enhancing the sta- bility of ALIF.
文摘Objective:To investigate a novel surgical method for multilevel cervical spondylotic myeIopa- thy(CSM).Methods:Totally 21 patients with multilevel CSM undergoing a novel surgical procedure from April 2001 to January 2004 were analyzed retrospectively.All patients experienced anterior cervical decompression surgery in subsection,autograft fusion and internal fixation.Preoperative,immediate post- operative and follow-up image data,X-rays and semi-quantitative Japanese orthopaedics association(JOA) scores were used to evaluate the restoration of lordosis(Cobb's angle),intervertebral heights,the stabili- ty of the cervical spine and the improvement of neurological impairment.Results:Preoperative symptoms were markedly alleviated or disappeared in most of the patients.According to the JOA scores,the ratio of improvement in neurological function was 72.2%,including excellent in 9 cases(42.9%),good in 7 cases (33.30%),fair in 3 cases(14.3%)and poor in 2 cases(9.5%).Immediate postoperative X-rays showed obvious improvements in lordosis and in the intervertebral height of the cervical spine(P<0.01).There is no evidence of instrument failure during the mean follow-up period of 14.2 months(9-24 months, P>0.01).Conclusion:Anterior cervical decompression in subsection,autograft fusion and internal fixa- tion is a rational effective method for the surgical treatment of multilevel CSM.
基金supported by the National Natural Science Foundation of China(No.81272024).
文摘To review the clinical efficacy of minimally invasive pedicle fixation combined with anterior small incision focus debridement for single-segment lumbar spine tuberculosis,a total of 31 patients with single-segment marginal lumbar tuberculosis were enrolled in the study.All the patients received quadruple anti-tuberculosis chemotherapy for 2 weeks before surgery and treatment with minimally invasive posterior internal fixation,anterior small incision focus debridement,and bone graft fusion.Those patients with preoperative kyphosis deformity were initially treated with appropriate posterior distraction correction.Except for 1 patient who healed 2 weeks after medical dressing change,the remaining30 patients healed as expected.All the patients had no screwrelated surgical complications,neurological dysfunction,vascular injury,and other complications.The average visual analog scale scores at 3 months postoperatively were significantly decreased to1.4±1.5(P<0.05).In conclusion,under the premise of treatment using appropriate,effective anti-tuberculosis agents,this surgical procedure for managing patients with lumbar vertebral tuberculosis achieved satisfactory results,effectively reducing the exposure range and fusion segments in simple anterior focus debridement and internal fixation.Using minimally invasive posterior pedicle screw fixation can effectively increase spine stability,reduce fusion segment,and decrease anterior surgical trauma and complications.
