Short-term Outcomes of 3D Printed Titanium Trabecular Metal Acetabular Cups and Bone Allograft for Revision Hip Arthroplasty with Acetabular Bone Deficiency
Department of Orthopaedic Surgery,Wuxi People’s Hospital,Nanjing Medical University
Objective To investigate the short-term outcomes of 3D printed titanium trabecular metal (TTM) acetabular cups in treatment of revision hip arthroplasty with acetabular bone deficiency.Methods The clinical data of 8 patients with acetabular bone deficiency using 3D printed TTM acetabular cups and bone allograft at Wuxi People’s Hospital from February 2017 to August 2018 were retrospectively analyzed.There were 3 males and 5 females,with an average age of (78.1±7.0)years (64~87 years).According to Paprosky acetabular defect classification,2 had ⅡB defects,1 had ⅡC defects,3 had ⅢA defects and 2 had ⅢB defects.The acetabular defect was reconstructed by TTM acetabular cups and bone grafting technique.The TTM acetabular cups were designed and fabricated according to each patient’s bone defects using 3D printing technology.During the follow-up,Harris hip score was recorded to assessed the efficacy,and X-rays were performed to evaluate the acetabular prosthesis position,migration,and graft incorporation.Results The mean follow-up was (25.0±6.1)months (18~36 months).The Harris hip score improved from (36.3±8.5)preoperatively to (82.8±6.3)postoperatively.TTM cups resulted in generally reliable restoration of the hip center.The difference of vertical distance and horizontal distance between bilateral sides was (0.5±2.7)mm and (-2.0±6.1)mm,respectively.Acetabular component loosening was not found,effective bone incorporation was achieved in all cases,and no re-revisions had been conducted at last follow-up.Conclusion 3D printed titanium trabecular metal acetabular cups combined with bone allograft for revision hip arthroplasty with acetabular bone deficiency canprovide early stability,improve hip scores and reconstruct the rotation center in short-term follow-up.
郭宇 1,王凌 1,丁育健 1,刘仪 1,冯德宏 1,2*,杨惠林 3. 3D打印钛合金骨小梁金属臼杯联合植骨重建髋臼骨缺损的早期疗效[J]. 实用骨科杂志, 2020, 26(6): 491-494.
Guo Yu,Wang Ling,Ding Yujian,et al. Short-term Outcomes of 3D Printed Titanium Trabecular Metal Acetabular Cups and Bone Allograft for Revision Hip Arthroplasty with Acetabular Bone Deficiency. sygkzz, 2020, 26(6): 491-494.
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