简介：AbstractBackground:Transoral vestibular approach thyroidectomy using robotic system has advantages with articulating instrumentation. Transoral robotic thyroidectomy (TORT) can be done either using just two robot arms for instruments and an extra one for the endoscopic camera, or using three robot arms for instruments (third arm through axila) and an additional arm for the camera.Pros of additional axillary arm for TORT:The 4th arm through an additional axillary port is mainly responsible for a counter-traction of strap muscles and thyroid tissue. The additional axillary port tract is also an excellent passage for the specimen removal with lower risk of disruption or fragmentation. Ultimately, these merits from the additional axillary arm allows TORT to be performed safely in a wide range of patient groups.Cons of additional axillary arm for TORT:One of the issue with the additional axillary arm in TORT is that it leaves a cutaneous scar. Another issue to consider is the cost. In some places, robotic surgery operation fee varies with the number of arms used during the operation. Retraction of strap muscles through subcutaneous stitches applied after establishing the working space may make up for the lack of counter-traction.Conclusion:TORT can be done safely with or without the transaxillary arm and surgeon may consider pros and cons based on multiple factors.

简介：摘要目的比较O-arm导航辅助下与C形臂X线机透视辅助下经皮骶髂关节螺钉内固定治疗骶髂关节复合体损伤的临床疗效。方法采用回顾性病例对照研究分析2016年7月— 2019年1月陆军军医大学第二附属医院收治的32例骶髂关节复合体损伤患者临床资料，其中男21例，女11例；年龄20～59岁，平均41.3岁。骨折按Tile分型：B1型7例，B2型13例，B3型5例，C1型5例，C2型2例。17例采用O-arm导航辅助下经皮骶髂螺钉内固定治疗(A组)，15例采用C形臂X线机透视辅助下经皮骶髂螺钉内固定治疗(B组)。比较两组单枚螺钉置钉时间、术中透视时间、术中出血量、骨折愈合时间，采用Matta标准评分评价术后骨折复位质量。采用Majeed功能评分评价末次随访时关节功能，并观察并发症情况。结果患者均获随访6～37个月，平均18.6个月。A组单枚螺钉置钉时间为(27.3±5.1)min，B组为(52.3±5.9)min(P<0.05)。A组术中透视时间为(43.3±3.2)s，B组为(64.6±5.4)s(P<0.05)。A组术中出血量为(17.8±2.6)ml，B组为(20.7±3.1)ml；A组骨折愈合时间为(13.4±1.4)周，B组为(14.1±1.9)周；A组和B组Matta标准评分的优良率分别为88%(15/17)和87%(13/15)；A组和B组末次随访时Majeed评分的优良率分别为94%(16/17)和87%(13/15)(P均>0.05)。术后B组1例患者出现1枚螺钉稍突破椎体前皮质。两组均无血管、神经损伤、伤口感染、螺钉松动等并发症。结论与C形臂X线机透视辅助下相比，O-arm导航辅助下经皮骶髂关节螺钉内固定治疗骶髂关节复合体损伤具有置钉时间短、术中透视时间短等优势。