For many years, end-to-end arthrodesis of a proximal interphalangeal joint arthrodesis to correct hammer digit deformity has been fixated with a Kirschner wire (K-wire). For this particular hammer digit deformity correction, we attempted to determine the effectiveness of the SmartToe® intramedullary shape memory implant compared with the K-wire. In a retrospective analysis of 28 cases, we evaluated several important parameters at baseline, postoperative days 7, 14, 21, 28, and 56, and 6 months for pain, complications, arthrodesis achieved, and return-to-work status. The SmartToe® outperformed the K-wire in all categories, with no evidence of significant complications, compared with multiple complications for patients in the K-wire arm of the study. This study demonstrates that the SmartToe® is a reasonable choice for fixation of proximal interphalangeal joint arthrodesis in hammer digit correction.
Level of Clinical Evidence
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Published online: August 10, 2012
Financial Disclosure: This study was funded with a research grant by MMI-USA, now part of Stryker Foot and Ankle.
Conflict of Interest: None reported.
© 2012 American College of Foot and Ankle Surgeons. Published by Elsevier Inc. All rights reserved.