A Biomechanical Study of Calcaneal Tuberosity Avulsion Fracture: A Comparison Between Three-Screw Versus Two-Screw Fixation Strength.
| Autor: | Wan KL; Department of Orthopaedics and Traumatology, Raja Permaisuri Bainun Hospital, Ipoh, MYS., Raghavan S; Department of Orthopaedic Surgery, National Orthopaedic Centre of Excellence for Research and Learning (NOCERAL) University of Malaya, Kuala Lumpur, MYS., Chua Y; Department of Orthopaedics, Sunway Medical Centre, Subang Jaya, MYS., Shanmugam R; Department of Orthopaedics, Prince Court Medical Centre, Kuala Lumpur, MYS., Ibrahim MI; Department of Orthopaedics and Traumatology, Raja Permaisuri Bainun Hospital, Ipoh, MYS. |
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| Jazyk: | angličtina |
| Zdroj: | Cureus [Cureus] 2024 Mar 26; Vol. 16 (3), pp. e56967. Date of Electronic Publication: 2024 Mar 26 (Print Publication: 2024). |
| DOI: | 10.7759/cureus.56967 |
| Abstrakt: | A calcaneal tuberosity avulsion fracture constitutes a sub-group of calcaneal fractures and it poses a high risk of soft tissue compromise, necessitating urgent reduction and fixation. This fracture was commonly treated with screw fixation, and fixation failure associated with this method has been reported in the literature. In light of this, we tested and compared the strength of two-screw (2S) versus three-screw (3S) fixations, where the third screw was fixed from the posterior calcaneal tuberosity towards the anterior process in addition to the two parallel screws. Synthetic calcaneum models were tested with an Instron machine to measure the maximum tensile load and stiffness. The mean maximum tensile loads for 3S and 2S were 455.8 N (SD = 47.4) and 341.0 N (SD = 30.9), respectively, and the difference was statistically significant. The mean stiffnesses for 3S and 2S were 29.2 N/mm (SD = 1.8) and 29.7 N/mm (SD = 2.0), but this difference did not reach statistical significance. Based on our findings, the added third screw increased the pull-out strength and can be inserted percutaneously to minimize soft tissue compromise. Competing Interests: The authors have declared that no competing interests exist. (Copyright © 2024, Wan et al.) |
| Databáze: | MEDLINE |
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