全球首例!“3D打印距骨表面假体置换”手术在西安完成

2019-11-02 梅镱泷 中国新闻网

记者11月1日从西安市红会医院了解到,该院近日完成一例“3D打印距骨表面假体置换”手术,经查新报告显示为全球首例。手术运用3D打印技术,用三维CT采集距骨数据,打印出个体化合适的距骨表面假体,将坏死的距骨表面用打印的金属假体置换,从而缓解患者疼痛,改善功能。据介绍,患者韩女士今年45岁,3年前出现踝关节反复疼痛,日常生活严重受限。经医院诊断发现,患者只是单纯的距骨穹窿部位出现广泛的缺血性坏死。为缓

记者11月1日从西安市红会医院了解到,该院近日完成一例“3D打印距骨表面假体置换”手术,经查新报告显示为全球首例。手术运用3D打印技术,用三维CT采集距骨数据,打印出个体化合适的距骨表面假体,将坏死的距骨表面用打印的金属假体置换,从而缓解患者疼痛,改善功能。

据介绍,患者韩女士今年45岁,3年前出现踝关节反复疼痛,日常生活严重受限。经医院诊断发现,患者只是单纯的距骨穹窿部位出现广泛的缺血性坏死。为缓解患者痛苦,将手术创伤降低,医护人员决定为其实施“3D打印距骨表面假体置换”手术。

“过去的手术是把一个骨头整个拿出来,不如这种局部置换手术的损伤小。”西安市红会医院足踝外科主任梁晓军称,选择距骨表面假体置换,不牺牲未受累的胫骨远端关节面,保留踝关节自身周围韧带结构,而且可以保留踝关节活动度,延缓全踝关节置换或融合等终极手术的时间,为后期可能需要的全踝置换术争取延长假体的生存率。

记者了解到,为了保证手术成功开展,医疗团队自主研发了截骨外架和截骨牵引工具。通过CT扫描患者的踝关节及距骨情况,定制打印距骨表面,并与3D打印方联合进行了多次生物力学试验和模拟手术。打印的距骨表面假体材料为钛合金,钛合金假体具有组织相容性好、耐磨、寿命长的优点。目前,患者术后踝关节功能良好。

西安市红会医院科教部教学科科长赵宏谋认为,此例手术破坏小,手术的创伤更小,而且稳定性更高。即使后期出现问题,还有很多可选的挽救性的手术去操作。

医护人员表示,希望临床可以更多地应用这项技术,将这项技术进一步推广,让更多的单纯距骨表面坏死患者有更好更优的治疗方案选择。

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