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目的:比较第1代与第2代动力化前路方形区钛板螺钉内固定系统（DAPSQ）治疗髋臼T形骨折的临床疗效。方法:回顾性分析2008年1月至2019年12月期间解放军中部战区总医院骨科采用手术治疗的28例髋臼T形骨折患者资料。根据内固定方式不同分为两组：A组15例，男11例，女4例；年龄为（43.5±9.1）岁；采用第1代DAPSQ固定治疗。B组13例，男8例，女5例；年龄为（42.5±7.0）岁；采用第2代DAPSQ固定治疗。记录并比较两组患者的手术时间、术中出血量、骨折复位质量、患髋功能及术后并发症发生情况等。结果:两组患者术前一般资料比较差异均无统计学意义（n P>0.05），具有可比性。28例患者术后获12~60个月（平均35.0个月）随访。B组患者的手术时间[（193.9±33.3）min]和术中出血量[（830.8±177.4）mL]显著少于A组患者[（231.3±40.0）min、（1 043.3±190.7）mL]，差异均有统计学意义（n P0.05）。随访期间A组和B组分别有2、1例患者发生髋关节创伤性关节炎。n 结论:与第1代DAPSQ相比，第2代DAPSQ可显著缩短髋臼T形骨折患者的手术时间、减少术中出血量，且二者临床功能相当。“,”Objective:To compare the clinical efficacy between our first generation and second generation dynamic anterior plate-screw system for quadrilateral area (DAPSQ) in the treatment of T-shaped acetabular fractures.Methods:A retrospective study was conducted of the 28 patients with T-shaped acetabular fractures who had been treated at Department of Orthopaedics, General Hospital of Central Theater Command from January 2008 to December 2019. They were divided into 2 groups according to fixation methods. Group A [15 patients, 11 males and 4 females, an age of (43.5±9.1) years] were treated with the first generation DAPSQ while Group B [13 patients, 8 males and 5 females, an age of (42.5±7.0) years] with the second generation DAPSQ. Operation time, intraoperative bleeding, fracture reduction, function of the affected hip and postoperative complications were recorded and compared between the 2 groups.Results:The 2 groups were comparable because there was no significant difference between them in the preoperative general data (n P>0.05). The 28 patients were followed up for 12 to 60 months (average, 35.0 months). The operation time [(193.9±33.3) min] and intraoperative bleeding [(830.8±177.4) mL] for Group B were significantly less than those for Group A [(231.3±40.0) min and (1,043.3±190.7) mL] (n P0.05). Follow-up observed hip traumatic arthritis in 2 cases in Group A and in one in Group B.n Conclusion:In the treatment of T-shaped acetabular fractures, compared with the first generation DAPSQ, the second generation DAPSQ can shorten operation time and decrease intraoperative bleeding significantly, though both achieve comparable functional outcomes.