3D打印辅助重建重度骨缺损翻修患者髋臼旋转中心的疗效

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Abstract Objective To study the early clinical outcomes of individualized 3D-printed titanium alloy socket cups in reconstruction of acetabular rotation center in patients with severe bone defects.Methods Ten patients admitted to our hospital from January 2017 to December 2018 accepted individualized 3D-printed titanium alloy cups to reconstruct the acetabular rotation centre of severe bone defects.4 males and 6 females were included.The patients aged 36 to 67 years，with an average of(54.71±10.23).According to Paprosky acetabular defects classification，there were 3 cases of ⅡB，7 cases of ⅢA.The intraoperative bleeding and operating time，the position of the hip joint center(HJC) on pelvic radiographs before and after surgery and the Harris functional score of the hip joint and postoperative complications were collected to evaluate the early clinical results of this technique.Results The operative time of the 10 patients ranged from 1.51 to 3.12 h，with a mean of (1.81±0.82)h.The intraoperative bleeding volume ranged from 650 to 1750 mL，with a mean of (983.43±459.22)mL.The follow-up period ranged from 13 to 26 months，with a mean of(18.35±4.51)months.The patient's postoperative acetabular centre of rotation improved significantly.Hip Harris function scores were 26 to 45 points before surgery，with an average of (34.02±14.91)points.And hip Harris function scores were 78 to 97 points at the last follow-up，with an average of (84.31±9.71)points.The difference was statistically significant (P＜0.01).10 patients had no complications such as prosthetic joint dislocation，prosthetic joint infection or periprosthetic fracture during the follow-up period.No radiolucent lines between the individual 3D printed socket cup and its host bone and no loosening of the prosthesis were observed on any of the pelvic radiographs during the postoperative follow-up period.At the 6-month postoperative follow-up，radiographs showed that the bone tissue around the 3D-printed cup was tightly integrated and reliably fixed，with good bone ingrowth.Conclusion The use of individualized 3D-printed titanium cups was able to reconstruct the centre of rotation of the acetabulum with severe bone defects，and there was significant improvement in limb length and hip function after surgery.

Key words： 3D printing acetabular centre of rotation acetabular bone defect hip revision

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	Xu Kangyong
	Tong Ye
	Tang Ruixin
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Xu Kangyong,Tong Ye,Tang Ruixin, et al. Study on the Efficacy of 3D Printing Assisted Acetabular Rotation Center Reconstruction in Revision Patients with Severe Bone Defects[J]. sygkzz, 2021, 27(9): 779-789.

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http://www.sygkzz.com/EN/ OR http://www.sygkzz.com/EN/Y2021/V27/I9/779

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