Blade plate compared with locking plate for tibiotalocalcaneal arthrodesis: A cadaver study
Document Type
Journal Article
Publication Date
2-1-2008
Journal
Foot and Ankle International
Volume
29
Issue
2
DOI
10.3113/FAI.2008.0219
Keywords
Arthrodesis; Blade plate; Fixation; Locking plate; Tibiotalocalcaneal fusion
Abstract
Background: We hypothesized that a locking plate would be stronger than a blade plate for tibiotalocalcaneal arthrodesis under dorsiflexion and torsional loading. Materials and Methods: Nine pairs of matched cadaveric lower extremities were used. BMD was obtained for each specimen. Each received a retrograde augmentation screw and a stainless steel LC-angled blade plate (Synthes, Paoli, PA) or a stainless steel LCP proximal humerus locking plate (Synthes, Paoli, PA). Specimens were cyclically loaded in dorsiflexion to simulate 6 weeks of partial weightbearing and then monotonically loaded to failure. Specimens were removed from the load frame and remounted to simulate fusion. The specimen received an axial load of 720 N and was externally rotated proximal to the construct at 5 degrees/sec to fracture. Data were compared with a Student's t-test. Pearson correlation analysis was used to determine whether bone mineral density was significantly related to measured parameters. Significance was set at p ≤ 0.05. Results: The locking plate group had higher initial stiffness, higher dorsiflexion and torsional load to failure, and lower construct deformation than the blade plate group. Bone mineral density was positively correlated with dorsiflexion failure load and torsional failure load in the locking plate construct. Conclusion: Fixation with the locking plate was superior to that with the blade plate. Clinical Relevance: Use of a locking plate may be an effective fixation technique in tibiotalocalcaneal arthrodesis, especially in complex hindfoot reconstructions with bone loss or deformity. Copyright © 2008 by the American Orthopaedic Foot & Ankle Society.
APA Citation
Chodos, M., Parks, B., Schon, L., Guyton, G., & Campbell, J. (2008). Blade plate compared with locking plate for tibiotalocalcaneal arthrodesis: A cadaver study. Foot and Ankle International, 29 (2). http://dx.doi.org/10.3113/FAI.2008.0219