3D打印模板辅助关节置换治疗膝骨关节炎的前瞻性研究

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Abstract Objective The clinical efficacy of patient-specific instrumentation(PSI) 3D-printed navigation template assisted total knee arthroplasty in the treatment of knee osteoarthritis was evaluated.Methods Sixty patients with knee osteoarthritis who underwent total knee arthroplasty in our hospital from January 2015 to January 2016 were included in this study.The patients were randomly divided into two groups：group A included 30 cases who underwent the PSI 3D printed osteotomy template assisted knee arthroplasty，group B included 30 cases who underwent conventional total knee arthroplasty.The operation time，bleeding volume，postoperative imaging data and HSS score were recorded and statistically analyzed.Results All the operations were successful and regular follow-up were achieved.No serious postoperative complications were observed.The mean operating time was (74.03±13.90)min in group A and (87.47±10.97)min in group B.The difference was statistically significant(P＝0.024).The bleeding volume was (239.47±42.93)mL in group A and was(388.57±38.81)mL in group B，which has the significant difference(P＝0.000).The postoperative femoral and tibial mechanical axis angle(mFTA) was(0.98±0.27)° in group A and (2.02±0.45)° in group B，which showed a significant difference(P＝0.001).The postoperative HSS score was(90.53±6.89) and (85.33±8.78) of group A and group B respectively，which also indicated a significant difference(P＝0.019).Conclusion The TKA with PSI 3D-printed navigation template has satisfactory short-term clinical efficacy with shorter operative time；less bleeding and more accurate limb alignment.

Key words： osteoarthritis arthroplasty osteotomy template 3D printed patient-specific instrumentation

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[1]	. [J]. sygkzz, 2021, 27(5): 456-459.