肩胛骨肿瘤切除3D打印聚醚醚酮个性化定制假体重建五例报告

目的 探讨3D打印聚醚醚酮(polyetherether-ketone,PEEK)个性化定制假体在肩胛骨肿瘤切除重建中的应用价值和效果.方法 回顾性分析2017年1月至2019年10月,收治的5例肩胛骨肿瘤切除重建患者,其中我院4例,新疆医科大学附属医院1例,男2例,女3例;左侧3例,右侧2例;年龄16～64岁,平均3...

3D personalized polyetheretherketone prosthesis reconstruction after scapular tumor resection

Objective To investigate the value and effect of 3D personalized polyetheretherketone (PEEK)prosthesis reconstruction after scapular tumor resection.Methods Five patients with scapular tumor (3 were in the left;2 were in the right) were analyzed retrospectively from January 2017 to October 2019.There were 2 males and 3 females with an average age of 35 years (range:16-64 years),including 1 benign fibrous histiocytoma,2 Ewing sarcoma,1 chondrosarcoma,and 1 metastatic tumor.Prosthesis was designed according to the mirroring image of 3D reconstruction of the normal side.Controlled cold depositing 3D printing was adopted to fabricate customized PEEK prosthesis,of which barium was doped to be developable in 4 cases.Total scapular tumor resection and 3D customized PEEK prosthesis reconstruction were performed,and humeral head replacement was done in 4 cases simultaneously.Results 3D customized PEEK scapular prosthesis was implanted successfully in 5 cases.The operation ranged90-150 min (average:124 min).The intraoperative blood loss ranged 400-1100 ml (average:780 ml).Postoperative X-ray and CT images showed satisfactory anatomical shoulder position and clearly visible developable prosthesis which is symmetrical with the contralateral scapula.Postoperative exercises began 3 weeks after shoulder fixation in functional position with abduction brace,while no complications such as dislocation,infection,and non-healing were observed.All patients were followed up for 3-24 months (average:12 months).There was no recurrence or metastasis during the follow-up.At the last follow-up,the Constant score ranged 64-69 with an average of 66.8.Conclusions 3D individualized PEEK scapular prosthesis can restore the shape and function of the scapula effectively and achieve accurate reconstruction of complex bone structure.However,long-term outcomes need to be further evaluated.