Lu Fei, Li Congsun, Hu Pengfei, Hu Bin, Wu Haobo
Department of Orthopedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou City, Zhejiang Province, PR China.
Orthopedics Research Institute of Zhejiang University, Hangzhou City, Zhejiang Province, PR China.
J Int Med Res. 2025 Jan;53(1):3000605241308383. doi: 10.1177/03000605241308383.
To analyze the early- to mid-term clinical efficacy of personalized 3D-printed structural metal spacer technology in reconstructing massive bone defects during complex total knee arthroplasty (TKA) and revision surgery.
A single-center retrospective study was conducted on nine patients with severe bone defects who underwent TKA between 2018 and 2024. The general condition, surgical details, and clinical improvement of these patients were recorded and analyzed by clinical doctors.
The average surgical duration was 183.9 minutes (range, 125-240 minutes), with intraoperative blood loss of 133.3 mL (range, 100-200 mL). The average hospital stay was 18.2 days (range, 10-42 days), and the follow-up duration was 13.2 months (range, 2-57 months). The preoperative average American Knee Society Score of 51.2 points (range, 15-74 points) improved significantly to 95.0 points (range, 81-106 points) at the last follow-up. No cases of vascular or nerve injury, infection, fracture, or prosthetic loosening were observed.
The precise manufacturing of customized spacers that seamlessly integrate with the patient's skeletal structure ensures stability, adaptability, and improved surgical outcomes.
分析个性化3D打印结构金属垫片技术在复杂全膝关节置换术（TKA）及翻修手术中重建大块骨缺损的早期至中期临床疗效。
对2018年至2024年间接受TKA的9例严重骨缺损患者进行单中心回顾性研究。临床医生记录并分析这些患者的一般情况、手术细节及临床改善情况。
平均手术时长为183.9分钟（范围125 - 240分钟），术中失血量为133.3毫升（范围100 - 200毫升）。平均住院时间为18.2天（范围10 - 42天），随访时长为13.2个月（范围2 - 57个月）。末次随访时，术前美国膝关节协会平均评分为51.2分（范围15 - 74分），显著提高至95.0分（范围81 - 106分）。未观察到血管或神经损伤、感染、骨折或假体松动病例。
定制垫片的精确制造与患者骨骼结构无缝融合，确保了稳定性、适应性并改善了手术效果。
