目的:探讨应用笑脸棒(smiley face rod,SFR)技术治疗腰椎峡部裂伴Ⅰ度滑脱的临床疗效。方法:回顾性分析我科2019年1月~2024年12月应用SFR节段内固定技术治疗的腰椎峡部裂伴Ⅰ度滑脱患者22例,其中男性18例,女性4例,年龄12~55岁(28.7±...目的:探讨应用笑脸棒(smiley face rod,SFR)技术治疗腰椎峡部裂伴Ⅰ度滑脱的临床疗效。方法:回顾性分析我科2019年1月~2024年12月应用SFR节段内固定技术治疗的腰椎峡部裂伴Ⅰ度滑脱患者22例,其中男性18例,女性4例,年龄12~55岁(28.7±12.6岁),体质指数(body mass index,BMI)18~29kg/m^(2)(22.7±3.4kg/m^(2)),术前病程6~60个月(12.3±14.3个月),随访时间6~19个月(9.1±4.5个月)。记录手术时间及术中出血量。术前、术后3个月、6个月采用腰痛视觉模拟量表(visual analogue scale,VAS)评分、Oswestry功能障碍指数(Oswestry disability index,ODI)和日本骨科协会(Japanese Orthopaedic Association,JOA)评分评估临床效果。术前和术后6个月行X线、CT等检查,测量术前和术后椎间盘高度、滑移距离、滑移率、腰椎前凸角、椎间隙活动范围,评价患者术后滑脱改善程度、活动度及骨愈合情况。分析年龄、BMI及术前病程与峡部骨愈合率的相关性。结果:手术时间86~200min(131.8±32.8min),出血量50~150mL(86.4±41.4mL)。术后患者腰骶部疼痛明显缓解,术后3个月及6个月时VAS评分、ODI及JOA评分均较术前明显改善(P<0.05)。与术前相比,术后6个月滑脱距离、滑移率、前凸角明显下降(P<0.05)。术前与术后6个月的手术节段和上一节段的椎间盘高度比、手术间隙和上一节段椎间隙活动范围均无明显差异(P<0.05)。术后6个月随访时峡部裂骨完全愈合率为81.82%(18/22),一侧峡部骨愈合及其他类型部分骨愈合率为13.63%(3/22),不愈合率为4.55%(1/22)。年龄、BMI及术前病程是影响骨愈合情况的潜在因素。结论:应用SFR技术治疗腰椎峡部裂伴Ⅰ度滑脱可有效提高术后腰椎稳定性,显著改善腰痛症状,保留腰椎运动功能,一定程度避免椎间盘高度塌陷。展开更多
The regular semigroups S with an idempotent set Es = {e0,e1,…,en,…} such that e0>e1>…>en>…is called a regularω-semigroup. In [5] Reilly determined the structure of a regular bisimpleω-semigroup as BR...The regular semigroups S with an idempotent set Es = {e0,e1,…,en,…} such that e0>e1>…>en>…is called a regularω-semigroup. In [5] Reilly determined the structure of a regular bisimpleω-semigroup as BR(G,θ), which is the classical Bruck-Reilly extension of a group G. Warne investigated the regular bisimpleωn-semigroups, he proved in [6] that展开更多
One of the most fundamental problems in theoretical biology is to explain the mechanisms by which patterns and forms are created in the living world. In his seminal paper 'The Chemical Basis of Morphogenesis',...One of the most fundamental problems in theoretical biology is to explain the mechanisms by which patterns and forms are created in the living world. In his seminal paper 'The Chemical Basis of Morphogenesis', Turing showed that a system of coupled reaction-diffusion equations can be used to describe patterns and forms in biological systems. However, the first experimental evidence to the Turing patterns was observed by De Kepper and her associates(1990) on the CIMA reaction in an open unstirred reactor, almost 40 years after Turing's prediction.展开更多
This paper studies multi-solitons of non-integrable generalized Davey-Stewartson system in the elliptic-elliptic case. By extending the method for constructing multi-solitons of non-integrable nonlinear SchrSdinger eq...This paper studies multi-solitons of non-integrable generalized Davey-Stewartson system in the elliptic-elliptic case. By extending the method for constructing multi-solitons of non-integrable nonlinear SchrSdinger equations and systems developed by Martel et al. to the present non-integrable generalized Davey- Stewartson system and overcoming some new difficulties caused by the nonlocal operator B, we prove the existence of multi-solitons for this system. Furthermore, we also give a generalization of this result to a more general class of equations with nonlocal nonlinearities.展开更多
This paper is devoted to studying the initial value problem of the Ginzburg-Landau type equations. We treat the case where the nonlinear interaction function is a general continuous function, not required to satisfy a...This paper is devoted to studying the initial value problem of the Ginzburg-Landau type equations. We treat the case where the nonlinear interaction function is a general continuous function, not required to satisfy any smoothness conditions. Local and global existence results of solutions of the problem are given. Decay estimates are also shown.展开更多
基金Supported by the NSFC(No．10571061)Guangdong national science foundation(No．0501332)．
文摘The regular semigroups S with an idempotent set Es = {e0,e1,…,en,…} such that e0>e1>…>en>…is called a regularω-semigroup. In [5] Reilly determined the structure of a regular bisimpleω-semigroup as BR(G,θ), which is the classical Bruck-Reilly extension of a group G. Warne investigated the regular bisimpleωn-semigroups, he proved in [6] that
文摘One of the most fundamental problems in theoretical biology is to explain the mechanisms by which patterns and forms are created in the living world. In his seminal paper 'The Chemical Basis of Morphogenesis', Turing showed that a system of coupled reaction-diffusion equations can be used to describe patterns and forms in biological systems. However, the first experimental evidence to the Turing patterns was observed by De Kepper and her associates(1990) on the CIMA reaction in an open unstirred reactor, almost 40 years after Turing's prediction.
基金supported by National Natural Science Foundation of China (Grant No. 11571381)
文摘This paper studies multi-solitons of non-integrable generalized Davey-Stewartson system in the elliptic-elliptic case. By extending the method for constructing multi-solitons of non-integrable nonlinear SchrSdinger equations and systems developed by Martel et al. to the present non-integrable generalized Davey- Stewartson system and overcoming some new difficulties caused by the nonlocal operator B, we prove the existence of multi-solitons for this system. Furthermore, we also give a generalization of this result to a more general class of equations with nonlocal nonlinearities.
基金This work is supported by the China National Science Foundation （No. 10471157）.
文摘This paper is devoted to studying the initial value problem of the Ginzburg-Landau type equations. We treat the case where the nonlinear interaction function is a general continuous function, not required to satisfy any smoothness conditions. Local and global existence results of solutions of the problem are given. Decay estimates are also shown.
