颏下皮瓣动脉网构筑的显微外科解剖

目的:为颏下皮瓣移植提供更精准的颏下动脉走行、分支、分布、动脉网构筑及皮瓣切取范围的显微外科解剖学资料。方法:2015年3月至2020年3月,采用36例成人头颈部新鲜标本制成血管铸型标本（72侧）,向双侧颈外动脉内注入红色丙烯晴-丁二烯-苯乙烯（ABS）填充剂,观测颏下动脉的走行、分支、分布和动脉网的构筑特点。结果:颏...     

不同程度的下肢动脉钙化对全膝关节置换术的伤口并发症分析

目的探讨术前X线提示的血管钙化全膝关节置换术的患者是否会出现伤口缺血等并发症的增加。方法通过回顾性分析2015年1月至2016年12月我院术中应用止血带的初次全膝关节置换术的患者资料,根据术前X线是否存在血管钙化分为三组:内膜钙化、中膜钙化及无钙化组。进行术后缺血相关并发症的相关性分析。结果纳入患者共577膝(437例),其中有96膝合并血管钙化,其中内膜钙化组为74膝(64例),中膜钙化组为22膝(20例)。无一例出现下肢动脉严重缺血并发症,内膜钙化组的浅表伤口愈合不良发生率为5.40%,显著高于中膜钙化组(0%)和无钙化组(1.25%)(P=0.032)。Logistic多因素回归分析结果显示,血管内膜钙化(OR=1.367,95%CI:1.152-1.888)是老年TKA术后伤口缺血并发症的危险因素。结论术前合并内膜钙化组病人的伤口并发症风险显著增加。术前应该充分重视合并血管钙化的病人,围手术期应加强这类病人止血带的规范化使用、术中软组织的保护以及警惕术后下肢动脉缺血并发症。     

丙泊酚用于左右利鼠麻醉效果的初步研究

目的观察丙泊酚单次腹腔注射对左利鼠和右利鼠的麻醉效果及安全性。方法用伸爪取食法将小鼠分为左利鼠(L组)和右利/双利鼠(R组),再以丙泊酚剂量分为100 mg/kg组(L1、R1组)和150 mg/kg组(L2、R2组),每组10只。记录小鼠翻正反射消失的潜伏期和睡眠时间。结果麻醉前L组和R组10 min内自主活动次数分别为(349.96±82.69)次和(276.38±60.23)次(P<0.01)。L1、L2组麻醉后睡眠时间分别长于R1、R2组[(27.83±14.48)min vs.(41.44±15.10)min,(15.15±6.88)min v.s(23.52±14.80)min(P<0.05)]。结论左利鼠对丙泊酚的耐受性较右利鼠差,对该类现象的深入研究将有望为临床的个体化用药提供依据。     

软骨延迟增强核磁成像法检测Ⅱ期、Ⅲ期股骨头坏死软骨改变

目的 运用软骨延迟增强核磁成像法检测Ⅱ期、Ⅲ期股骨头坏死的软骨改变,研究股骨头坏死塌陷前后软骨的改变规律.方法 采用软骨延迟增强核磁成像技术,对每名受试者进行钆增强延迟核磁共振扫描,应用MATLAB和Mrimapper软件进行数据处理,分别获得股骨头软骨感兴趣区的TIGd数据.样本为成人激素性股骨头坏死国际骨坏死与循环协会(ARCO)分期Ⅱ期、Ⅲ期患者和健康志愿者,分为3组,A组:ARCO Ⅱ期,11髋;B组:ARCO Ⅲ期,13髋;C组:健康对照组为无髋关节疾病的健康正常成年人,10髋.结果 A组T1Gd值为420±60,B组T1Gd值为361±54,C组T1Gd值为538±26,A组、B组患者T1Gd值与C组相比差异均有统计学意义(均P＜0.01).股骨头坏死塌陷后期T1Gd值较塌陷前T1Gd值低14%,差异有统计学意义(P＜0.01).结论 股骨头坏死塌陷前的ARCO Ⅱ期股骨头关节软骨已经发生代谢变化,塌陷后ARCO Ⅲ期更加明显,说明骨坏死塌陷前期即影响关节关节软骨的代谢功能,并随坏死程度的加重而加重.

Abstract：

Objective To detect the cartilage changes of hip joint with osteonecrosis of femoral head (ONFH) in stages Ⅱ and Ⅲ and provide evidence for understanding cartilage changes of femoral head of osteonecrosis before collapse. Methods The cartilage changes of ONFH were determined by delayed gadolinium enhanced magnetic resonance imaging of cartilage (dGEMRIC). According to ARCO classification of ONFH, the samples were divided into three groups: Group A, 11 hips, stageⅡ; Group B,13 hips, stage Ⅲ; Group C, 10 hips, normal. All participates underwent the tests by dGEMRIC. And the data of T1Gd were collected and analyzed. Results The values of T1Gd were 420 ±60 (Group A) ,361 ±54(Group B) and 538 ±26 (Group C) respectively. There was a significant difference among three groups.The values of T1Gd in the ONFH patients were lower than their healthy counterparts. The values of T1Gd of Group B was 14% lower than those of Group A. And the difference was significant statistically. Conclusion Cartilage of the femoral head undergoes abnormal metabolic changes before collapse. There is a loss of GAG in the cartilage and it aggravates with the worsening of ONFH.     

Cartilage changes of femoral head osteonecrosis in stage Ⅱ and Ⅲ as detected by dGEMRIC

Objective To detect the cartilage changes of hip joint with osteonecrosis of femoral head (ONFH) in stages Ⅱ and Ⅲ and provide evidence for understanding cartilage changes of femoral head of osteonecrosis before collapse. Methods The cartilage changes of ONFH were determined by delayed gadolinium enhanced magnetic resonance imaging of cartilage (dGEMRIC). According to ARCO classification of ONFH, the samples were divided into three groups: Group A, 11 hips, stageⅡ; Group B,13 hips, stage Ⅲ; Group C, 10 hips, normal. All participates underwent the tests by dGEMRIC. And the data of T1Gd were collected and analyzed. Results The values of T1Gd were 420 ±60 (Group A) ,361 ±54(Group B) and 538 ±26 (Group C) respectively. There was a significant difference among three groups.The values of T1Gd in the ONFH patients were lower than their healthy counterparts. The values of T1Gd of Group B was 14% lower than those of Group A. And the difference was significant statistically. Conclusion Cartilage of the femoral head undergoes abnormal metabolic changes before collapse. There is a loss of GAG in the cartilage and it aggravates with the worsening of ONFH.     

Cartilage changes of femoral head osteonecrosis in stage Ⅱ and Ⅲ as detected by dGEMRIC

Objective To detect the cartilage changes of hip joint with osteonecrosis of femoral head (ONFH) in stages Ⅱ and Ⅲ and provide evidence for understanding cartilage changes of femoral head of osteonecrosis before collapse. Methods The cartilage changes of ONFH were determined by delayed gadolinium enhanced magnetic resonance imaging of cartilage (dGEMRIC). According to ARCO classification of ONFH, the samples were divided into three groups: Group A, 11 hips, stageⅡ; Group B,13 hips, stage Ⅲ; Group C, 10 hips, normal. All participates underwent the tests by dGEMRIC. And the data of T1Gd were collected and analyzed. Results The values of T1Gd were 420 ±60 (Group A) ,361 ±54(Group B) and 538 ±26 (Group C) respectively. There was a significant difference among three groups.The values of T1Gd in the ONFH patients were lower than their healthy counterparts. The values of T1Gd of Group B was 14% lower than those of Group A. And the difference was significant statistically. Conclusion Cartilage of the femoral head undergoes abnormal metabolic changes before collapse. There is a loss of GAG in the cartilage and it aggravates with the worsening of ONFH.     

人工智能三维术前规划在全髋关节置换术中的应用和准确性分析

目的 探讨人工智能三维规划系统在全髋关节置换术中假体型号选择的准确性。方法 选取2019年11月至2020年12月住院期间的27例（32髋）行初次全髋关节置换手术患者，其中男10例，女17例。术前完成患侧髋关节X线及CT影像资料采集，分别使用传统模板测量法和人工智能三维术前规划进行假体型号预测，通过与全髋关节置换术中实际所用型号进行对比，比较两种预测方法的吻合率。结果 人工智能三维术前规划对髋臼及股骨假体型号预测的吻合率分别为90.6%和81.3%，传统模板测量对髋臼及股骨假体型号预测的吻合率分别为56.3%和46.9%。两种预测方法吻合率比较，差异有统计学意义（P<0.05）。人工智能三维规划系统预测髋臼杯型号同实际应用型号之间存在相关性（r=0.915，P<0.001），人工智能三维规划系统预测股骨假体型号同实际应用型号之间存在相关性（r=0.941，P<0.001）。结论 人工智能三维术前规划系统较传统模板测量方法更能准确预测假体型号。     

初次全膝关节置换后的腓总神经损伤：危险因素及防治策略研究现状

BACKGROUND: Common peroneal nerve injury is one of the rare but serious complications after total knee arthroplasty. With the increased amount of operations, peroneal nerve injury would become more and more common, although the incidence rate is relatively low.     

组织学绒毛膜羊膜炎暴露对呼吸窘迫综合征早产儿并发支气管肺发育不良的影响

目的:探讨组织学绒毛膜羊膜炎(histological chorioamnionitis,HCA)暴露对呼吸窘迫综合征(respiratory distress syndrome,RDS)早产儿并发支气管肺发育不良(bronchopulmonary dysplasia,BPD)的影响。方法:收集2018年1月至2020...     

不同利爪小鼠对戊巴比妥钠药物反应的初步研究

目的:研究小鼠是否与人类一样存在着利手(爪)偏侧性现象,比较不同利爪偏侧性小鼠对不同浓度的戊巴比妥钠药物反应,初步探讨利爪分布特点及其对药物反应差异,以及这种差异对临床个性化用药的参考意义.方法:成年昆明鼠96只,雌雄各半,观察小鼠抓取食物所用左右前爪频次,了解小鼠利爪分布;观察不同利爪小鼠给予非麻醉剂量戊巴比妥钠20...