<b><span style="font-family:Verdana;">Background:</span></b><span style="font-family:Verdana;"> An open fracture is an injury in which the fracture site and/or hematom...<b><span style="font-family:Verdana;">Background:</span></b><span style="font-family:Verdana;"> An open fracture is an injury in which the fracture site and/or hematoma communicates with the external environment. It is associated with significant morbidity and disability and is a challenge to the surgical team. The lower extremities are the most often exposed to traumatic injuries compared to other anatomical parts of the body. Patterns of open fractures differ with different mechanisms of injury and the segment of the long bone affected. The correct and timely management of open fractures is beneficial to the patients and lead</span><span style="font-family:Verdana;">s</span><span style="font-family:;" "=""><span style="font-family:Verdana;"> to a more favorable outcome. This study aimed at describing the pattern of open fractures of long bones of the lower limb treated in 3 major hospitals of the south west region, Cameroon. </span><b><span style="font-family:Verdana;">Methodology: </span></b><span style="font-family:Verdana;">This was a hospital-based retrospective review of files of patients with open fractures of long bones of the lower limb managed at the surgical units of three secondary health facilities in the South-West region of Cameroon from the 1</span><sup><span style="font-family:Verdana;">st</span></sup><span style="font-family:Verdana;"> of January 2015 to the 31</span><sup><span style="font-family:Verdana;">st</span></sup><span style="font-family:Verdana;"> of December 2019. The socio-demographic characteristics, clinical presentation, treatment modalities, and outcomes were recorded. The data was stored and analyzed using Epi info version 7.0 and SPSS version 23.0 respectively. </span><b><span style="font-family:Verdana;">Results: </span></b><span style="font-family:Verdana;">A total of 195 files of patients aged 8 to 80 years were studied. The main age group affected was between 20</span></span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">-</span><span style="font-family:;" "=""> </span><span style="font-family:;" "=""><span style="font-family:Verdana;">40 </span><span style="font-family:Verdana;">years. There were 147 (75.4%) males and 48 (24.6%) females giving a sex-ratio</span><span style="font-family:Verdana;"> of 3.1:1. The most common cause was road traffic crashes 142 (72.8%). In 98 cases (50.3%)</span></span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> the left side was more involved. The tibia was the most common long bone affected in 75 (38.5%) cases. Comminuted fracture was the most common fracture pattern encountered in 126 cases (64.6%). A total of 76 (39%) fractures were graded Gustilo-Anderson IIIA. External fixator was used in 112 cases (57.1%) and internal fixator in 86 cases (42.9%). We recorded 127 (65.1%) cases of wound infection and 143 (73.3%) cases of limb shortening as the most common complications. Other complications include</span><span style="font-family:Verdana;">: </span><span style="font-family:Verdana;">20 cases (17.1%) of mal-union, 27 cases (22.5%) of delayed union, 18 cases (15.1%) of non-union and 50 cases (38.5%) chronic osteomyelitis. We recorded a mortality of 2.1%. Gustilo IIIB and IIIC were associated to chronic osteomyelitis (P</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">=</span><span style="font-family:;" "=""> </span><span style="font-family:;" "=""><span style="font-family:Verdana;">0.02). </span><b><span style="font-family:Verdana;">Conclusion: </span></b><span style="font-family:Verdana;">Open fractures of long bones of the lower limb affect the active age group of the population and road traffic crashes</span></span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">are the most common causes. It tends to affect the left side and the tibia being the most fractured long bone. A reasonable proportion of these fractures subsequently get infected. Comminuted fracture is the common fracture pattern.</span>展开更多
Lower limb injures are frequently observed in passenger car traffic accidents.Previous studies of the injuries focus on long bone fractures by using either cadaver component tests or simulations of the long bone kinem...Lower limb injures are frequently observed in passenger car traffic accidents.Previous studies of the injuries focus on long bone fractures by using either cadaver component tests or simulations of the long bone kinematics,which lack in-depth study on the fractures in stress analysis.This paper aims to investigate lower limb impact biomechanics in real-world car to pedestrian accidents and to predict fractures of long bones in term of stress parameter for femur,tibia,and fibula.For the above purposes,a 3D finite element(FE) model of human body lower limb(HBM-LL) is developed based on human anatomy.The model consists of the pelvis,femur,tibia,fibula,patella,foot bones,primary tendons,knee joint capsule,meniscus,and ligaments.The FE model is validated by comparing the results from a lateral impact between simulations and tests with cadaver lower limb specimens.Two real-world accidents are selected from an in-depth accident database with detailed information about the accident scene,car impact speed,damage to the car,and pedestrian injuries.Multi-body system(MBS) models are used to reconstruct the kinematics of the pedestrians in the two accidents and the impact conditions are calculated for initial impact velocity and orientations of the car and pedestrian during the collision.The FE model is used to perform injury reconstructions and predict the fractures by using physical parameters,such as von Mises stress of long bones.The calculated failure level of the long bones is correlated with the injury outcomes observed from the two accident cases.The reconstruction result shows that the HBM-LL FE model has acceptable biofidelity and can be applied to predict the risk of long bone fractures.This study provides an efficient methodology to investigate the long bone fracture suffered from vehicle traffic collisions.展开更多
Background: Rapid urbanization and increasing fleet in low-income countries are the basis of the higher rate of trauma and fractures. In a post conflict environment, the abnormal movement of firearms and poverty from ...Background: Rapid urbanization and increasing fleet in low-income countries are the basis of the higher rate of trauma and fractures. In a post conflict environment, the abnormal movement of firearms and poverty from them may change the configuration’s epidemiological, anatomical and clinical fractures of the limbs bones as well as their care. Goal: To make an inventory on the fractures of the limb bones in Bukavu town, a town in post armed conflict. Method: This work is transversal, retrospective and descriptive on 500 fractures of the limbs bones recorded on a period of 3 months from 1st June to 31st August 2013. Twenty investigators went around different places of Bukavu town to interview and complete a research protocol ad hoc. In total, we recorded 500 subjects with 570 fractures of the limb bones. Results: The average age is 29.4 years old and 37% are male fractured. The main circumstances of occurrence of the fracture of the limbs bones are the falls (31.7%), firearms (22.2%) followed closely by road traffic accidents (21.9%). Students (38.6%) and the unemployed (29.4%) are most victims’ fractures of limb bones. The forearm bones (31.7%) and leg bones (27.2%) are most concerned, 52.2% fractured turned to modern medicine against 41.8% for traditional medicine. Conclusion: The fractures of the limbs bones in Bukavu mainly concern young male subjects. They occur with the waning of a fall and preferentially affect the bones of the forearm. Good governance would reduce the incidence of fractures of the limbs bones and their assessment.展开更多
目的 探讨使用Orthofix单边外固定架通过骨短缩-延长肢体治疗下肢开放性粉碎性骨折临床疗效。方法 回顾性分析2017年1月~2022年3月深圳市龙华区中心医院创伤骨科使用Orthofix单边外固定架通过骨短缩-延长肢体治疗下肢开放性粉碎性骨折患...目的 探讨使用Orthofix单边外固定架通过骨短缩-延长肢体治疗下肢开放性粉碎性骨折临床疗效。方法 回顾性分析2017年1月~2022年3月深圳市龙华区中心医院创伤骨科使用Orthofix单边外固定架通过骨短缩-延长肢体治疗下肢开放性粉碎性骨折患者25例,男性18例,女7例,年龄20~57岁,平均38.6岁,股骨8例,胫骨17例,左侧14例,右侧11例,GustiloⅢC型5例,GustiloⅢB型20例,交通事故17例,重物砸伤8例,2例合并2型糖尿病,合并软组织缺损23例,合并大动静脉缺损3例(缺损长度分别为9 cm, 5 cm, 4 cm),合并踝关节骨折5例。所有病例经清创后出现骨缺损,骨缺损长度5~23 cm,平均缺损长度10 cm,软组织缺损面积8 cm×5 cm~18 cm×10 cm。GustiloⅢC型患者根据缺损动静脉长度进行相应长度骨短缩并用组合式外固定架固定,直接闭合创面或封闭负压引流。GustiloⅢB型患者一期骨短缩3~7 cm并用组合式外固定支架固定,创面直接闭合或封闭负压引流,合并大动静脉缺损患者1.5月后安装Orthofix单边外固定架,并行股骨或胫骨截骨延长术,未合并大动静脉缺损患者术后1周左右复查白细胞计数、中性粒细胞计数、C反应蛋白及降钙素原正常后,安装Orthofix单边外固定架+股骨或胫骨截骨延长术。结果 随访12~36个月,所有患者骨及软组织缺损均愈合,未出现下肢不等长>2.5 cm、骨延长区域或骨折端再发骨折等并发症。骨性愈合时间为12~24个月,平均18.6个月;骨性愈合指数为31.7~120.2 d/cm,平均63.8 d/cm;外固定时间为12~30个月,平均20.6个月;外固定指数为32.3~117.2 d/cm,平均56.8 d/cm。Ilizarov技术研究与应用学会(Association for Study and Application of Method of Ilizarov, ASAMI)骨愈合评价:优23例,良2例;ASAMI下肢功能评价:优17例,良7例,可1例。结论 使用Orthofix单边外固定架通过骨短缩-延长肢体治疗下肢开放性粉碎性骨折可同时修复骨与软组织缺损,无须移植血管神经及皮瓣修复,降低手术难度,值得临床推广。展开更多
目的探究院前创伤团队启动(Trauma team activation,TTA)创伤救治模式对严重四肢骨折患者救治及时性及预后。方法选取2020年1月-2022年12月收治的严重四肢骨折患者84例,其中2020年1月-2021年5月为实施TTA模式前共纳入42例作为对照组,202...目的探究院前创伤团队启动(Trauma team activation,TTA)创伤救治模式对严重四肢骨折患者救治及时性及预后。方法选取2020年1月-2022年12月收治的严重四肢骨折患者84例,其中2020年1月-2021年5月为实施TTA模式前共纳入42例作为对照组,2021年6月-2022年12月为实施TTA后共纳入42例作为观察组,对比两组救治及时性指标、肢体功能、并发症以及骨密度指标恢复情况。结果与对照组相比,观察组感染、继发损伤、器官衰竭发生率降低,但对比数据差异不具有统计学意义(P>0.05);与对照组相比,观察组救治及时性指标、专科医生到达时间、特殊检查开始时间、急诊至手术时间、急诊停留时间均明显降低,住院时间明显缩短,差异具有统计学意义(P<0.05);与本组治疗前相比,患者PICP、Total-PINP水平明显升高,β-CTX明显降低,差异具有统计学意义(P<0.05)。与对照组相比,观察组治疗后骨代谢指标PICP、Total-PINP水平明显升高,差异具有统计学意义(P<0.05)。与对照组相比,观察组治疗后骨代谢指标β-CTX水平明显降低,差异具有统计学意义(P<0.05);与本组治疗前相比,患肢功能得分明显升高,差异具有统计学意义(P<0.05)。与对照组相比,观察组治疗后上肢、下肢功能得分明显升高,差异具有统计学意义(P<0.05);与对照组相比,观察组VAS评分、肿胀程度、骨折愈合时间均明显降低,差异具有统计学意义(P<0.05)。结论对于严重四肢骨折患者,开展院前创伤团队启动模式可有效缩短患者急救时间,以保证尽快开展手术治疗,促进患者康复,改善预后。展开更多
目的探究超声血流参数[收缩期峰值血流速度(Vs)、舒张末期血流速度(Vd)、阻力指数(RI)]、D-二聚体手术前后变化及复合模型在创伤骨折患者下肢深静脉血栓形成(DVT)预警中的应用价值。方法选取2021年7月—2023年7月收治的创伤骨折200例,...目的探究超声血流参数[收缩期峰值血流速度(Vs)、舒张末期血流速度(Vd)、阻力指数(RI)]、D-二聚体手术前后变化及复合模型在创伤骨折患者下肢深静脉血栓形成(DVT)预警中的应用价值。方法选取2021年7月—2023年7月收治的创伤骨折200例,根据术后是否发生下肢DVT分为发生组25例与未发生组175例。收集2组基线资料及手术前后Vs、Vd、RI、D-二聚体数据,根据创伤骨折患者术后下肢DVT发生影响因素构建预测复合模型,评估Vs、Vd、RI、D-二聚体手术前后差值联合及复合模型对创伤骨折患者术后下肢DVT发生的预测价值。绘制决策曲线分析(DCA),分析超声血流参数、D-二聚体与复合模型预测创伤骨折患者术后下肢DVT发生的获益情况。结果发生组手术时间长于未发生组,术中使用止血带比例高于未发生组(P<0.01);发生组术后3 d Vs、Vd低于未发生组,RI、D-二聚体高于未发生组(P<0.01);发生组Vs、Vd、RI及D-二聚体手术前后差值均大于未发生组(P<0.01);多因素Logistic回归分析显示,手术时间、术中使用止血带及Vs、Vd、RI、D-二聚体手术前后差值为创伤骨折患者术后下肢DVT发生的独立危险因素(P<0.01);以Vs、Vd、RI、D-二聚体手术前后差值联合预测下肢DVT的曲线下面积(AUC)为0.882(95%CI:0.829,0.923),敏感度、特异度均为0.88。构建下肢DVT预测模型,其AUC为0.920(95%CI:0.873,0.954);DCA显示,复合模型在阈值概率为0.10~0.90时具有更高的临床价值。结论手术时间、术中使用止血带及Vs、Vd、RI、D-二聚体手术前后差值为创伤骨折患者术后下肢DVT发生的独立危险因素;与Vs、Vd、RI、D-二聚体手术前后差值相比,多指标联合建立的复合模型在创伤骨折术后下肢DVT早期预警中应用价值更高。展开更多
文摘<b><span style="font-family:Verdana;">Background:</span></b><span style="font-family:Verdana;"> An open fracture is an injury in which the fracture site and/or hematoma communicates with the external environment. It is associated with significant morbidity and disability and is a challenge to the surgical team. The lower extremities are the most often exposed to traumatic injuries compared to other anatomical parts of the body. Patterns of open fractures differ with different mechanisms of injury and the segment of the long bone affected. The correct and timely management of open fractures is beneficial to the patients and lead</span><span style="font-family:Verdana;">s</span><span style="font-family:;" "=""><span style="font-family:Verdana;"> to a more favorable outcome. This study aimed at describing the pattern of open fractures of long bones of the lower limb treated in 3 major hospitals of the south west region, Cameroon. </span><b><span style="font-family:Verdana;">Methodology: </span></b><span style="font-family:Verdana;">This was a hospital-based retrospective review of files of patients with open fractures of long bones of the lower limb managed at the surgical units of three secondary health facilities in the South-West region of Cameroon from the 1</span><sup><span style="font-family:Verdana;">st</span></sup><span style="font-family:Verdana;"> of January 2015 to the 31</span><sup><span style="font-family:Verdana;">st</span></sup><span style="font-family:Verdana;"> of December 2019. The socio-demographic characteristics, clinical presentation, treatment modalities, and outcomes were recorded. The data was stored and analyzed using Epi info version 7.0 and SPSS version 23.0 respectively. </span><b><span style="font-family:Verdana;">Results: </span></b><span style="font-family:Verdana;">A total of 195 files of patients aged 8 to 80 years were studied. The main age group affected was between 20</span></span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">-</span><span style="font-family:;" "=""> </span><span style="font-family:;" "=""><span style="font-family:Verdana;">40 </span><span style="font-family:Verdana;">years. There were 147 (75.4%) males and 48 (24.6%) females giving a sex-ratio</span><span style="font-family:Verdana;"> of 3.1:1. The most common cause was road traffic crashes 142 (72.8%). In 98 cases (50.3%)</span></span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> the left side was more involved. The tibia was the most common long bone affected in 75 (38.5%) cases. Comminuted fracture was the most common fracture pattern encountered in 126 cases (64.6%). A total of 76 (39%) fractures were graded Gustilo-Anderson IIIA. External fixator was used in 112 cases (57.1%) and internal fixator in 86 cases (42.9%). We recorded 127 (65.1%) cases of wound infection and 143 (73.3%) cases of limb shortening as the most common complications. Other complications include</span><span style="font-family:Verdana;">: </span><span style="font-family:Verdana;">20 cases (17.1%) of mal-union, 27 cases (22.5%) of delayed union, 18 cases (15.1%) of non-union and 50 cases (38.5%) chronic osteomyelitis. We recorded a mortality of 2.1%. Gustilo IIIB and IIIC were associated to chronic osteomyelitis (P</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">=</span><span style="font-family:;" "=""> </span><span style="font-family:;" "=""><span style="font-family:Verdana;">0.02). </span><b><span style="font-family:Verdana;">Conclusion: </span></b><span style="font-family:Verdana;">Open fractures of long bones of the lower limb affect the active age group of the population and road traffic crashes</span></span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">are the most common causes. It tends to affect the left side and the tibia being the most fractured long bone. A reasonable proportion of these fractures subsequently get infected. Comminuted fracture is the common fracture pattern.</span>
基金supported by National Hi-tech Research and Development Program of China (863 Program,Grant No. 2006AA110101)"111 Program" of Ministry of Education and State Administration of Foreign Experts Affairs of China (Grant No. 111-2-11)+1 种基金General Motors Research and Development Center (Grant No. RD-209)Project of State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan University,China (Grant No. 60870004)
文摘Lower limb injures are frequently observed in passenger car traffic accidents.Previous studies of the injuries focus on long bone fractures by using either cadaver component tests or simulations of the long bone kinematics,which lack in-depth study on the fractures in stress analysis.This paper aims to investigate lower limb impact biomechanics in real-world car to pedestrian accidents and to predict fractures of long bones in term of stress parameter for femur,tibia,and fibula.For the above purposes,a 3D finite element(FE) model of human body lower limb(HBM-LL) is developed based on human anatomy.The model consists of the pelvis,femur,tibia,fibula,patella,foot bones,primary tendons,knee joint capsule,meniscus,and ligaments.The FE model is validated by comparing the results from a lateral impact between simulations and tests with cadaver lower limb specimens.Two real-world accidents are selected from an in-depth accident database with detailed information about the accident scene,car impact speed,damage to the car,and pedestrian injuries.Multi-body system(MBS) models are used to reconstruct the kinematics of the pedestrians in the two accidents and the impact conditions are calculated for initial impact velocity and orientations of the car and pedestrian during the collision.The FE model is used to perform injury reconstructions and predict the fractures by using physical parameters,such as von Mises stress of long bones.The calculated failure level of the long bones is correlated with the injury outcomes observed from the two accident cases.The reconstruction result shows that the HBM-LL FE model has acceptable biofidelity and can be applied to predict the risk of long bone fractures.This study provides an efficient methodology to investigate the long bone fracture suffered from vehicle traffic collisions.
文摘Background: Rapid urbanization and increasing fleet in low-income countries are the basis of the higher rate of trauma and fractures. In a post conflict environment, the abnormal movement of firearms and poverty from them may change the configuration’s epidemiological, anatomical and clinical fractures of the limbs bones as well as their care. Goal: To make an inventory on the fractures of the limb bones in Bukavu town, a town in post armed conflict. Method: This work is transversal, retrospective and descriptive on 500 fractures of the limbs bones recorded on a period of 3 months from 1st June to 31st August 2013. Twenty investigators went around different places of Bukavu town to interview and complete a research protocol ad hoc. In total, we recorded 500 subjects with 570 fractures of the limb bones. Results: The average age is 29.4 years old and 37% are male fractured. The main circumstances of occurrence of the fracture of the limbs bones are the falls (31.7%), firearms (22.2%) followed closely by road traffic accidents (21.9%). Students (38.6%) and the unemployed (29.4%) are most victims’ fractures of limb bones. The forearm bones (31.7%) and leg bones (27.2%) are most concerned, 52.2% fractured turned to modern medicine against 41.8% for traditional medicine. Conclusion: The fractures of the limbs bones in Bukavu mainly concern young male subjects. They occur with the waning of a fall and preferentially affect the bones of the forearm. Good governance would reduce the incidence of fractures of the limbs bones and their assessment.
文摘目的 探讨使用Orthofix单边外固定架通过骨短缩-延长肢体治疗下肢开放性粉碎性骨折临床疗效。方法 回顾性分析2017年1月~2022年3月深圳市龙华区中心医院创伤骨科使用Orthofix单边外固定架通过骨短缩-延长肢体治疗下肢开放性粉碎性骨折患者25例,男性18例,女7例,年龄20~57岁,平均38.6岁,股骨8例,胫骨17例,左侧14例,右侧11例,GustiloⅢC型5例,GustiloⅢB型20例,交通事故17例,重物砸伤8例,2例合并2型糖尿病,合并软组织缺损23例,合并大动静脉缺损3例(缺损长度分别为9 cm, 5 cm, 4 cm),合并踝关节骨折5例。所有病例经清创后出现骨缺损,骨缺损长度5~23 cm,平均缺损长度10 cm,软组织缺损面积8 cm×5 cm~18 cm×10 cm。GustiloⅢC型患者根据缺损动静脉长度进行相应长度骨短缩并用组合式外固定架固定,直接闭合创面或封闭负压引流。GustiloⅢB型患者一期骨短缩3~7 cm并用组合式外固定支架固定,创面直接闭合或封闭负压引流,合并大动静脉缺损患者1.5月后安装Orthofix单边外固定架,并行股骨或胫骨截骨延长术,未合并大动静脉缺损患者术后1周左右复查白细胞计数、中性粒细胞计数、C反应蛋白及降钙素原正常后,安装Orthofix单边外固定架+股骨或胫骨截骨延长术。结果 随访12~36个月,所有患者骨及软组织缺损均愈合,未出现下肢不等长>2.5 cm、骨延长区域或骨折端再发骨折等并发症。骨性愈合时间为12~24个月,平均18.6个月;骨性愈合指数为31.7~120.2 d/cm,平均63.8 d/cm;外固定时间为12~30个月,平均20.6个月;外固定指数为32.3~117.2 d/cm,平均56.8 d/cm。Ilizarov技术研究与应用学会(Association for Study and Application of Method of Ilizarov, ASAMI)骨愈合评价:优23例,良2例;ASAMI下肢功能评价:优17例,良7例,可1例。结论 使用Orthofix单边外固定架通过骨短缩-延长肢体治疗下肢开放性粉碎性骨折可同时修复骨与软组织缺损,无须移植血管神经及皮瓣修复,降低手术难度,值得临床推广。
文摘目的探究院前创伤团队启动(Trauma team activation,TTA)创伤救治模式对严重四肢骨折患者救治及时性及预后。方法选取2020年1月-2022年12月收治的严重四肢骨折患者84例,其中2020年1月-2021年5月为实施TTA模式前共纳入42例作为对照组,2021年6月-2022年12月为实施TTA后共纳入42例作为观察组,对比两组救治及时性指标、肢体功能、并发症以及骨密度指标恢复情况。结果与对照组相比,观察组感染、继发损伤、器官衰竭发生率降低,但对比数据差异不具有统计学意义(P>0.05);与对照组相比,观察组救治及时性指标、专科医生到达时间、特殊检查开始时间、急诊至手术时间、急诊停留时间均明显降低,住院时间明显缩短,差异具有统计学意义(P<0.05);与本组治疗前相比,患者PICP、Total-PINP水平明显升高,β-CTX明显降低,差异具有统计学意义(P<0.05)。与对照组相比,观察组治疗后骨代谢指标PICP、Total-PINP水平明显升高,差异具有统计学意义(P<0.05)。与对照组相比,观察组治疗后骨代谢指标β-CTX水平明显降低,差异具有统计学意义(P<0.05);与本组治疗前相比,患肢功能得分明显升高,差异具有统计学意义(P<0.05)。与对照组相比,观察组治疗后上肢、下肢功能得分明显升高,差异具有统计学意义(P<0.05);与对照组相比,观察组VAS评分、肿胀程度、骨折愈合时间均明显降低,差异具有统计学意义(P<0.05)。结论对于严重四肢骨折患者,开展院前创伤团队启动模式可有效缩短患者急救时间,以保证尽快开展手术治疗,促进患者康复,改善预后。
文摘目的探究超声血流参数[收缩期峰值血流速度(Vs)、舒张末期血流速度(Vd)、阻力指数(RI)]、D-二聚体手术前后变化及复合模型在创伤骨折患者下肢深静脉血栓形成(DVT)预警中的应用价值。方法选取2021年7月—2023年7月收治的创伤骨折200例,根据术后是否发生下肢DVT分为发生组25例与未发生组175例。收集2组基线资料及手术前后Vs、Vd、RI、D-二聚体数据,根据创伤骨折患者术后下肢DVT发生影响因素构建预测复合模型,评估Vs、Vd、RI、D-二聚体手术前后差值联合及复合模型对创伤骨折患者术后下肢DVT发生的预测价值。绘制决策曲线分析(DCA),分析超声血流参数、D-二聚体与复合模型预测创伤骨折患者术后下肢DVT发生的获益情况。结果发生组手术时间长于未发生组,术中使用止血带比例高于未发生组(P<0.01);发生组术后3 d Vs、Vd低于未发生组,RI、D-二聚体高于未发生组(P<0.01);发生组Vs、Vd、RI及D-二聚体手术前后差值均大于未发生组(P<0.01);多因素Logistic回归分析显示,手术时间、术中使用止血带及Vs、Vd、RI、D-二聚体手术前后差值为创伤骨折患者术后下肢DVT发生的独立危险因素(P<0.01);以Vs、Vd、RI、D-二聚体手术前后差值联合预测下肢DVT的曲线下面积(AUC)为0.882(95%CI:0.829,0.923),敏感度、特异度均为0.88。构建下肢DVT预测模型,其AUC为0.920(95%CI:0.873,0.954);DCA显示,复合模型在阈值概率为0.10~0.90时具有更高的临床价值。结论手术时间、术中使用止血带及Vs、Vd、RI、D-二聚体手术前后差值为创伤骨折患者术后下肢DVT发生的独立危险因素;与Vs、Vd、RI、D-二聚体手术前后差值相比,多指标联合建立的复合模型在创伤骨折术后下肢DVT早期预警中应用价值更高。