Treatment of Nonunion of Scaphoid Waist with Ni-Ti Shape-Memory Alloy Connector and Iliac Bone Graft
| Autor: | Lie-Hu Cao, Chun-Cai Zhang, Ya-Le Wu, Shuo-Gui Xu |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
musculoskeletal diseases
medicine.medical_specialty business.industry Mechanical Engineering Nonunion Scaphoid nonunion Retrospective cohort study Bone healing musculoskeletal system equipment and supplies medicine.disease Surgery Fixation (surgical) surgical procedures operative medicine.anatomical_structure Mechanics of Materials Iliac bone medicine General Materials Science Scaphoid waist business Cancellous bone Biomedical engineering |
| Zdroj: | Journal of Materials Engineering and Performance. 20:629-631 |
| ISSN: | 1544-1024 1059-9495 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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