目的    探讨Krackow缝合法联合缝线桥技术治疗儿童髌骨下极骨折的临床疗效。  方法    对我院收治的9例髌骨下极骨折患儿采用Krackow缝合法联合缝线桥技术固定，术后早期行康复锻炼。观察术后并发症、骨折愈合时间及膝关节Bostman评分。  结果    所有患儿均获得随访,平均12.6月。术后无感染、内固定失败、骨折不愈合等情况发生。骨折愈合时间(3.1±0.1)月，末次随访膝关节Bostman评分(29.1±1.1)分。  结论   采用Krackow缝合法联合缝线桥技术治疗儿童髌骨下极骨折无需二次手术，在提供足够的骨折稳定性基础上便于患儿早期行膝关节功能锻炼，术后恢复良好。

Objective   To investigate the clinical efficacy of Krackow suture combined with suture bridge technique in the treatment of children's inferior patellar fracture.   Methods    Nine children with inferior patellar fracture admitted from January 2017 to June 2022 were treated with Krackow suture and suture bridge technology to fix the patellar inferior pole bone block. Early postoperative rehabilitation exercise were performed. The outcome measures included complications, fracture healing time, knee pain, range of motion (ROM) and Bostman score. Results All patients were followed up for an average of 12.6 months. No wound infection, internal fixation failure, nonunion of fracture occurred after operation. Fracture healing time were (3.1±0.1) months. The Bostman score of the knee joint was (29.1±1.1), and the VAS score was (0.2± 0.4).    Conclusions    The Krackow suture method combined with suture bridge technique in the treatment of children's inferior patellar fracture is simple in operation and reliable in fixation, which is conducive to early functional exercise and does not require secondary internal fixation. It is widely applicable to children's patellar lower pole fracture and is worthy of clinical promotion.