Fractures of the talar neck. A mechanical study of fixation
| Autor: | G B Holmes, T J Bray, T. V. Swanson |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
musculoskeletal diseases
medicine.medical_specialty Osteosynthesis business.industry medicine.medical_treatment Stiffness General Medicine Anatomy musculoskeletal system equipment and supplies Fixation (surgical) medicine.anatomical_structure Cadaver Orthopedic surgery Fracture fixation medicine Internal fixation Orthopedics and Sports Medicine Surgery medicine.symptom Ankle business |
| Zdroj: | The Journal of Bone & Joint Surgery. 74:544-551 |
| ISSN: | 0021-9355 |
| Popis: | Anatomical reduction and rigid internal fixation of fractures of the talar neck allow early mobilization of the ankle and subtalar joints. Forty fresh tali from cadavera were fractured across the talar neck and were internally fixed with one of four methods. The specimens were again loaded to failure, and mean yield loads, yield deformations, stiffness, and energy absorbed were compared. The two configurations of screws that were inserted posterior to anterior provided yield loads superior to those of screws inserted anterior to posterior. All combinations of screws were stronger than Kirschner wires. Comparisons of yield deformations, stiffness, and energy absorbed corroborated these results. The calculated theoretical maximum shear force across the talar neck during active motion was 1129 newtons. This exceeded the strength that was provided by Kirschner wires and anteriorly inserted screws but not that provided by screws that were placed posteriorly. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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