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目的:介绍一种跨弓状缘髋臼四方区解剖钢板，探讨其在复杂髋臼骨折内固定治疗中的优缺点及临床疗效。方法:回顾性分析2017年3月至2019年3月采用跨弓状缘髋臼四方区解剖钢板治疗18例髋臼骨折患者资料，其中男15例，女3例；年龄49.6岁（范围，27~62岁）；根据Letournel-Judet分型：前柱骨折3例（累及四方区），T形骨折2例，前方伴后半横形骨折8例，双柱骨折5例；受伤至手术时间为7 d（范围，5~14 d）。患者术前均摄骨盆前后位X线片及CT+三维重建，充分了解骨折形态。手术均采用高位髂腹股沟入路，并使用跨弓状缘髋臼四方区阻挡钢板进行固定，记录手术时间、术中出血量及术后并发症。术后患者均摄标准前后位及Judet位骨盆X线片、CT+三维重建，按照Matta标准评价骨折复位情况，采用Matta改良的Merled’Aubigné-Postel评分评价髋关节功能。结果:18例患者手术时间130 min（范围，100~200 min）；术中出血量560 ml（范围，400~900 ml）；跨弓状缘髋臼四方区解剖钢板术中均无需额外塑形，均顺利完成手术。18例患者均获得随访，随访时间9个月（范围，6~15个月），骨折均完全愈合。骨折复位按Matta评分标准评分，其中优11例、良4例、可3例，优良率83.3%（15/18）。末次随访时Matta改良的Merle d’Aubigné-Postel评分为15.8分（范围，12~18分），其中优10例、良6例、可2例，优良率88.9%（16/18）。术后2例患者出现股外侧皮神经损伤症状，1个月后好转；余无其他术后并发症。结论:跨弓状缘髋臼四方区阻挡钢板可以同时固定髋臼前后柱及四方区，解剖型设计，无需塑形，安全性好，固定牢靠，术后并发症低，早期临床疗效满意。“,”Objective:To introduce a novel anatomical supra-pectineal quadrilateral surface buttress plate, and explore its advantages, disadvantages and clinical efficacy in the treatment of complex acetabular fractures.Methods:Data of eighteen cases of acetabular fractures treated in our department from March 2017 to March 2019were retrospectively analyzed. There were 15 males and 3 females with an average age of 49.6 years (range, 27-62 years). According to the Letournel-Judet’s classification, there were 3 cases of anterior column fractures (involving quadrilateral surface), 2 cases of “T” shaped, 8 of cases anterior column and posterior hemi-transverse (ACPHT) and 5 cases of double columns fractures. The time from injury to operation was 5-14 days (mean, 7 days). Before operation, all patients were taken pelvic anterior-posterior X-ray and CT scan. All patients were adopted supra-ilioinguinal approach and fixed by supra-pectineal quadrilateral surface buttress plate. Surgical time, intraoperative blood loss and postoperative complications were collected. After operations all patients were taken pelvic X-ray in anterior-posterior and Judet position, as well as CT scan. The radiographic quality of reduction was evaluated by Matta criteria and hip functions were evaluated by Matta Modified Merle d’Aubigné-Postel scoring system.Results:The average surgical time was 130 min (range, 100-200 min). The average blood loss was 560 ml (range, 400-900 ml). An additional shaping was unnecessary in 18 patients who were implanted with the anatomical supra-pectineal quadrilateral surface buttress plate and all patients were operated successfully. All patients were followed up for an average time of 9 months (range, 6-15 months). The quality of fracture reduction was evaluated according to Matta standard, of which there were 11 cases excellent, 4 cases good, and 3 cases poor, with an excellent rate of 83.3% (15/18). At the latest follow-up, the function of the hip joint was evaluated according to the Matta Modified Merle d’Aubigné-Postel scoring system for a mean of 15.8 scores (range, 12-18 scores), of which there were 10 cases excellent, 6 cases good, 2 cases fair, with an excellent rate of 88.9% (16/18). All patients recovered well, and there were 2 cases of lateral femoral cutaneous nerve injury postoperative who had recovered one month later. There was no other postoperative complications.Conclusion:The anterior and posterior column and quadrilateral surface could be stabilized simultaneously by the anatomical supra-pectineal quadrilateral surface buttress plate without intraoperative shaping. Moreover, it is more likely to obtain a satisfactory clinical outcome by using this special plate with lower complications and rigid fixation. Therefore, it is a kind of internal fixation method worthy of promotion in the treatment of complex acetabular fractures.