Treatment of Nonunion of Scaphoid Waist with Ni-Ti Shape-Memory Alloy Connector and Iliac Bone Graft
Treatment of Nonunion of Scaphoid Waist with Ni-Ti Shape-Memory Alloy Connector and Iliac Bone Graft
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DOI：
10.1007/s11665-011-9923-2
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发表时间：
2011-07-01
影响因子：
2.3
通讯作者：
Zhang, Chun-Cai
中科院分区：
文献类型：
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作者：
Cao, Lie-Hu;Xu, Shuo-Gui;Zhang, Chun-Cai
骨折后，舟状骨自身独特的解剖结构和血液供应容易导致骨不连。舟状骨骨不连对外科医生来说是一个巨大的挑战，因为固定困难，治疗后失败率高。镍钛形状记忆合金可以在骨不连部位提供压应力，这是骨愈合的关键。因此，我们设计了一种形状记忆骨连接器，命名为拱形形状记忆连接器（ASC）。我们进行了一项回顾性研究，观察愈合率和并发症以及使用该装置治疗的相关结果。本研究回顾了2002年8月至2007年12月在我中心连续接受ASC和髂骨松质骨移植治疗的6例舟状骨腰骨不连患者。骨不连患者的骨愈合率达到100%。所有获得愈合的患者均有良好的疼痛缓解和功能改善。我们的研究表明舟状骨腰骨不连可以通过ASC和髂骨移植成功治疗。
After fracture, the unique anatomy and blood supply of the scaphoid itself predisposes to nonunion. Scaphoid nonunion presents a formidable challenge to surgeons because of the difficulties for fixation, and the high failure rate after treatment. The Ni-Ti shape-memory alloy can provide compressive stress at the nonunion site, which is the key point for bone healing. Hence, we designed a shape-memory bone connector named arched shape-memory connector (ASC). We conducted a retrospective study looking at the union rate and complications and correlating the outcome of treatment with this device. The study reviewed a cohort of six consecutive patients presenting with scaphoid waist nonunion, who were treated with ASC and iliac cancellous bone grafting at our center from August 2002 to December 2007. The patients with nonunion achieved a 100% union rate. All the patients who achieved union had good pain relief and improved function. Our study demonstrates that scaphoid waist nonunions can be successfully treated by ASC and iliac bone grafting.