3D打印导航模块辅助髓芯减压植骨治疗早期股骨头坏死

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Abstract Objective To explore the efficacy of employing 3D printing technique combined with allogeneic fibula to treat early stage necrosis of femur head.Methods Materials of 26 patients admitted to our department between January 2016 and August 2018 with images classification of stage Ⅰand stageⅡ according to Association Research Circulation Osseous classification were categorized into 3D printing group and conventional non-3D printing group based on the type of surgery procedure.The factors of Harris scores before and afteroperation，intraoperation time，incision length，drainage and X-ray frequency were meticulously collected and statistically analysed.Results All patients were followed up and the follow-up duration were (9.83±2.34)months (range1 to 24 ).Statistical analyses showed that the Harris scores before operation and after operationofthe two groups hadsignificant differences(P＜0.05)，but the baselines between the two groups were actually the same with no significant differences.We also found that operation time and X-ray frequency were different between the 3D pringting group and non-3D conventional group(P＜0.05)，but the drainage volume and incision length hadnostatistically differences (P＞0.05).Conclusion 3D printingassisted navigation technique systems could have the same comparatively clinic outcomes and efficacy to non-3D conventional groups for the treatment of early stage of femur head necrosis，and can improve the quality of patient life，prevent the progression of femur head necrosis and improve the prognosis of these disease，and advantages of this technique in shortening operation time and reducing X-ray frequency are also apparent.Thus，this 3D printing mould assisted technique should be promoted and utilized in clinic and could make benefit to the patients.

Key words： 3D printing necrosis of femur head medullary core decompression bone grafting

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