附加钢板治疗髓内钉固定后股骨萎缩性骨不连

目的 探讨附加钢板治疗髓内钉固定后股骨萎缩性骨不连的手术适应证和操作技术.方法1999年6月-2009年6月,应用附加钢板合并开放植骨治疗12例髓内钉固定后股骨萎缩性骨不连.小切口微创清除骨折端肉芽组织,硬化骨去皮质化,足量髂骨纵形平铺于骨不连间隙和骨皮质骨床上,选择5～6孔钛合金限制接触型动力接骨板,3.0 mm克氏针钻孔,4～6枚皮质骨螺钉双皮质固定.术后保护性负重,1,3,6,12个月临床与影像学评估.结果全部获得骨性愈合,随访时问7 ～26个月,平均17.4个月.取髂骨植骨并附加钢板固定手术时间共50～120 min,平均77.5 min;出血量150～350 ml,平均252 ml.术后供骨区疼痛9例,7例1个月内缓解,2例3个月后缓解.临床骨性愈合时间5～9个月,平均7.1个月;影像学愈合时间7～12个月,平均9.4个月.无感染、钢板螺钉松动、断裂等.结论附加钢板合并植骨适用于髓内钉固定后股骨干骺端骨不连、AO分型B型骨折骨不连、骨缺损>1 cm以及扩髓更换髓内钉失败的萎缩性骨不连.

Abstract：

Objective To investigate the operative indications and operation techniques for augmentative plate fixation in treatment of femoral shaft atrophic nonunions subsequent to intramedullary fixation. Methods Twelve femoral nonunions after internal fixation with intramedullary nailing were treated with augmentative plate internal fixation and bone graft from June 1999 to June 2008. All femoral nonunions were caused by insecure fixation of the intramedullary nailing, in which a rotational instability of the fracture site was verified in all the patients during operation. Minimally invasive removal of the granulation tissue at fracture site and the sclerotic bone was dccorticated. The adequate lilac bone was tiled longitudinally on the nonunion gap and the cortical bone bed. The fixation involved the limited-contact dynamic titanium plate with 5-6 holes, 3.0 mm Kirschner wire and 4-6 double cortex cortical screw fixation.Protective weight-bearing was given after surgery and the tunction was evaluated at 1,3, 6 and 12 months with imaging. Results All patients were followed up for 7-26 months ( average 17.4 months), which showed radiological solid union (7-12 months, average 9.4 months) and clinical union (5-9 months, average 7.1 months ). The operation lasted for 50-120 minutes ( average 77.5 minutes), with blood volume of 150-350 ml ( average 252 ml). There were nine patients with bone pain, of whom the pain was relieved within one month in seven patients and three months in two. No infection, hardware loosening or breaking were found. Conclusion The plate augmentation and cancellous bone grafting leaving the nail in situ can be an effective solution for nonisthmal femoral nonunion, bone defect and failed exchange nailing.

Augmentative plate fixation for treatment of femoral atrophic nonunions subsequent to intramedullary nailing

Objective To investigate the operative indications and operation techniques for augmentative plate fixation in treatment of femoral shaft atrophic nonunions subsequent to intramedullary fixation. Methods Twelve femoral nonunions after internal fixation with intramedullary nailing were treated with augmentative plate internal fixation and bone graft from June 1999 to June 2008. All femoral nonunions were caused by insecure fixation of the intramedullary nailing, in which a rotational instability of the fracture site was verified in all the patients during operation. Minimally invasive removal of the granulation tissue at fracture site and the sclerotic bone was dccorticated. The adequate lilac bone was tiled longitudinally on the nonunion gap and the cortical bone bed. The fixation involved the limited-contact dynamic titanium plate with 5-6 holes, 3.0 mm Kirschner wire and 4-6 double cortex cortical screw fixation.Protective weight-bearing was given after surgery and the tunction was evaluated at 1,3, 6 and 12 months with imaging. Results All patients were followed up for 7-26 months ( average 17.4 months), which showed radiological solid union (7-12 months, average 9.4 months) and clinical union (5-9 months, average 7.1 months ). The operation lasted for 50-120 minutes ( average 77.5 minutes), with blood volume of 150-350 ml ( average 252 ml). There were nine patients with bone pain, of whom the pain was relieved within one month in seven patients and three months in two. No infection, hardware loosening or breaking were found. Conclusion The plate augmentation and cancellous bone grafting leaving the nail in situ can be an effective solution for nonisthmal femoral nonunion, bone defect and failed exchange nailing.