目的:分析股骨转子间骨折获得内侧皮质正性支撑对于股骨近端防旋髓内钉(proximal femoral nail antirotation,PFNA)疗效的影响。方法:回顾性分析2017年1至2019年1月安徽医科大学第三附属医院采用PFNA治疗的股骨转子间骨折(AO/OTA31A2型)...目的:分析股骨转子间骨折获得内侧皮质正性支撑对于股骨近端防旋髓内钉(proximal femoral nail antirotation,PFNA)疗效的影响。方法:回顾性分析2017年1至2019年1月安徽医科大学第三附属医院采用PFNA治疗的股骨转子间骨折(AO/OTA31A2型)113例,其中男43例,女70例。根据术后X线片正位片中头颈骨块内侧皮质与股骨干内侧皮质相对位置关系,将行PFNA治疗的股骨粗隆间骨折患者分为正性支撑组(n=75),中性支撑组(n=21),负性支撑组(n=17)。比较3组年龄、性别、手术时间、术中出血量、术后即刻尖顶距、术后完全负重时间、股骨颈长度丢失、颈干角丢失、髋关节Harris评分。结果:患者均获得完整随访,随访时间8~14(平均10.6)个月。3组年龄、性别、手术时间、术中出血量及术后即刻尖顶距的比较差异无统计学意义(P>0.05)。比较术后6个月随访影像学检查与术后即刻X线片,获得内侧皮质正性支撑患者的术后完全负重时间、股骨颈长度丢失及颈干角变化明显少于负性支撑患者,术后6个月正性支撑组髋关节Harris评分高于负性支撑组,差异均有统计学意义(均P<0.05)。结论:股骨转子间骨折复位中正性支撑时,头颈骨块与股骨干间可获得更稳定的支撑,有效避免并发症的发生。展开更多
Adolescence is a critical period for neurodevelopment. Evidence from animal studies suggests that isolated rearing can exert negative effects on behavioral and brain development. The present study aimed to investigate...Adolescence is a critical period for neurodevelopment. Evidence from animal studies suggests that isolated rearing can exert negative effects on behavioral and brain development. The present study aimed to investigate the effects of adolescent social isolation on latent inhibition and brain-derived neurotrophic factor levels in the forebrain of adult rats. Male Wistar rats were randomly divided into adolescent isolation (isolated housing, 38-51 days of age) and social groups. Latent inhibition was tested at adulthood. Brain-derived neurotrophic factor levels were measured in the medial prefrontal cortex and nucleus accumbens by an enzyme-linked immunosorbent assay. Adolescent social isolation impaired latent inhibition and increased brain-derived neurotrophic factor levels in the medial prefrontal cortex of young adult rats. These data suggest that adolescent social isolation has a profound effect on cognitive function and neurotrophin levels in adult rats and may be used as an animal model of neurodevelopmental disorders.展开更多
文摘目的:分析股骨转子间骨折获得内侧皮质正性支撑对于股骨近端防旋髓内钉(proximal femoral nail antirotation,PFNA)疗效的影响。方法:回顾性分析2017年1至2019年1月安徽医科大学第三附属医院采用PFNA治疗的股骨转子间骨折(AO/OTA31A2型)113例,其中男43例,女70例。根据术后X线片正位片中头颈骨块内侧皮质与股骨干内侧皮质相对位置关系,将行PFNA治疗的股骨粗隆间骨折患者分为正性支撑组(n=75),中性支撑组(n=21),负性支撑组(n=17)。比较3组年龄、性别、手术时间、术中出血量、术后即刻尖顶距、术后完全负重时间、股骨颈长度丢失、颈干角丢失、髋关节Harris评分。结果:患者均获得完整随访,随访时间8~14(平均10.6)个月。3组年龄、性别、手术时间、术中出血量及术后即刻尖顶距的比较差异无统计学意义(P>0.05)。比较术后6个月随访影像学检查与术后即刻X线片,获得内侧皮质正性支撑患者的术后完全负重时间、股骨颈长度丢失及颈干角变化明显少于负性支撑患者,术后6个月正性支撑组髋关节Harris评分高于负性支撑组,差异均有统计学意义(均P<0.05)。结论:股骨转子间骨折复位中正性支撑时,头颈骨块与股骨干间可获得更稳定的支撑,有效避免并发症的发生。
基金supported by the National Natural Science Foundation of China, grant No. 31070910, 91132728the Knowledge Innovation Program of the Chinese Academy of Sciences (KSCX2-EW-J-8)the Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences
文摘Adolescence is a critical period for neurodevelopment. Evidence from animal studies suggests that isolated rearing can exert negative effects on behavioral and brain development. The present study aimed to investigate the effects of adolescent social isolation on latent inhibition and brain-derived neurotrophic factor levels in the forebrain of adult rats. Male Wistar rats were randomly divided into adolescent isolation (isolated housing, 38-51 days of age) and social groups. Latent inhibition was tested at adulthood. Brain-derived neurotrophic factor levels were measured in the medial prefrontal cortex and nucleus accumbens by an enzyme-linked immunosorbent assay. Adolescent social isolation impaired latent inhibition and increased brain-derived neurotrophic factor levels in the medial prefrontal cortex of young adult rats. These data suggest that adolescent social isolation has a profound effect on cognitive function and neurotrophin levels in adult rats and may be used as an animal model of neurodevelopmental disorders.