TY  - BOOK
AU  - Abbasi, Pooyan
AU  - Miller, Stuart D
AU  - O'Neil, Joseph T
AU  - Parks, Breny G
TI  - Staple-Plate Plus Screw vs Screw Alone in Talonavicular Arthrodesis: A Cadaveric Biomechanical Study
SN  - 1071-1007
PY  - 2020///
KW  - *Arthrodesis/mt [Methods]
KW  - *Bone Plates
KW  - *Bone Screws
KW  - *Talus/su [Surgery]
KW  - *Tarsal Bones/su [Surgery]
KW  - Aged
KW  - Aged, 80 and over
KW  - Biomechanical Phenomena
KW  - Cadaver
KW  - Female
KW  - Humans
KW  - Male
KW  - Middle Aged
KW  - Random Allocation
KW  - MedStar Union Memorial Hospital
KW  - Curtis National Hand Center
KW  - Orthopaedic Surgery
KW  - Journal Article
N2  - BACKGROUND: This study evaluated whether the addition of a nitinol staple-plate to a single cannulated screw increased the mechanical stability for a talonavicular fixation construct; CLINICAL RELEVANCE: This information may be helpful to surgeons in implant selection for this common arthrodesis procedure; CONCLUSION: We found a significant increase in stability of the talonavicular joint when a nitinol staple-plate construct was placed to augment a single cannulated screw for the purpose of a talonavicular fusion; METHODS: Twenty matched pairs of cadaveric feet were randomized to fusion with either a single 5.5-mm cannulated screw or a screw and a plate with 2 screws and a slot with an 18-mm nitinol staple. After in situ fusion procedure, the talonavicular joint complex was dissected free and the ends were embedded in epoxy. The specimens were then cyclically loaded on a servohydraulic load frame (1000 cycles at 20 N, increasing at intervals of 20 N until failure), half of them for cantilever bending and the other half for torsion; RESULTS: In the bending arm of the study, the staple-plate group showed significantly higher stiffness, failure load, and cycles to failure. In the torsion arm of the study, the staple-plate group also had higher cycles to failure, stiffness in external rotation, and torque to failure. No significant difference was noted in stiffness in internal rotation
UR  - https://dx.doi.org/10.1177/1071100720942468
ER  -