ObjectiveTo investigate the correlative factors for the efficacy of surgical treatment for single segment degenerative lumbar spinal disorders. MethodsFrom October 2008 to November 2010, a prospective non-randomized controlled study was carried out on 179 patients who were diagnosed to have L4-5 degenerative lumbar spinal disorders and underwent surgical treatment. Ninety-seven patients were included in our study, including 64 males and 33 females, aged between 21 and 86 years old, averaging 49.0. The follow up lasted for an average of 18.9 (12-27) months. The correlative factors including age, sex, body mass index, preoperative psychological state and degree of low back pain, surgical methods, combination with adjacent segment degeneration and recurrence state were analyzed. Single and multiple-factor Logistic regression analysis was used to determine the relationship between independent factors and surgical results of lumbar degenerative disease. ResultsAt the last follow-up, Japanese Orthopaedic Association scores were improved to 22.40±3.18 with an improving rate of (68.5±15.7)% compared with the preoperative condition (7.61±3.09), and the difference was significant (t=-33.031, P<0.001). Univariate analysis showed that all factors were variables associated with the surgical results excluding sex and age (P<0.05). Multiple-factor logistic regression analysis showed that the preoperative psychological state, combination with adjacent segment degeneration and surgical methods had important impact on the surgical results (P<0.05). ConclusionSurgical treatment of lumbar degenerative disease is effective. The preoperative psychological state, combination with adjacent segment degeneration and surgical methods are important factors associated with the surgical results.
ObjectiveTo investigate the influence of uncovertebral joint foraminal part excision on the motion response, stability and clinical outcomes after single-level cervical disc replacement. MethodsThe clinical data of 57 patients with cervical spondylotic radiculopathy, who underwent single-level Prestige LP cervical disc replacement in West China Hospital of Sichuan University from January 2012 to January 2015, were retrospectively analyzed.According to whether to have the uncovertebral joint foraminal part excision in the process of operation, two groups were divided, named excision group and non-excision group.The Japanese Orthopedic Association score (JOA), neck disability index (NDI) and visual analogue score (VAS) were used to evaluate the clinical outcomes pre-and post-operatively.The stability, overall cervical alignment, range of motion of treated levels in flexion-extension and lateral bending, and the transverse and longitudinal diameter of intervertebral foramen were measured by X-ray and CT-3D examination.The complications and reoperations were also recorded. ResultsThere were statistically significant improvement in the JOA, NDI, neck VAS and arm VAS scores in both of the two groups after the surgery (P < 0.05).The improvement of the NDI and the arm VAS scores were more obvious after the surgery in excision group.The overall cervical alignment, the range of motion of treated levels in flexion-extension and lateral bending were well maintained post-operatively (P > 0.05), and the differences between the two groups were not significant (P > 0.05).The transverse diameter of intervertebral foramen was significantly increased in excision group post-operatively (P < 0.05) while the longitudinal diameter was not (P > 0.05);both of the transverse and longitudinal diameter of intervertebral foramen didn't differ much post-operatively in the non-excision group (P > 0.05).All the prostheses showed a good stability.No prostheses shift, dislocation or unfixed prostheses were found. ConclusionUncovertebral joint foraminal part excision can be used in single-level Prestige LP cervical disc replacement, which is safe and reliable.