Academic Journal
The effect of humeral implant thickness and canal fill on interface contact and bone stresses in the proximal humerus
| العنوان: | The effect of humeral implant thickness and canal fill on interface contact and bone stresses in the proximal humerus |
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| المؤلفون: | Stephanie Synnott, MESc, G. Daniel G. Langohr, PhD, Jacob M. Reeves, PhD, James A. Johnson, PhD, George S. Athwal, MD, FRCSC |
| المصدر: | JSES International, Vol 5, Iss 5, Pp 881-888 (2021) |
| بيانات النشر: | Elsevier, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Orthopedic surgery LCC:Diseases of the musculoskeletal system |
| مصطلحات موضوعية: | Short stem, total shoulder arthroplasty, reverse shoulder arthroplasty, stress shielding, bone adaptations, bone remodeling, Orthopedic surgery, RD701-811, Diseases of the musculoskeletal system, RC925-935 |
| الوصف: | Background: Stem size is an important element for successful time zero primary fixation of a press-fit humeral stem in shoulder arthroplasty. Little basic science research, however, has been conducted on the effects of implant thickness and canal fill on load transfer, contact, and stress shielding. The purpose of this finite element study was to determine the effects of varying stem thickness on bone contact, bone stresses, and bone resorption owing to stress shielding. Methods: Three generic short-stem implant models were developed and varied based on cross-sectional thickness (thinner – 8 mm, medium – 12 mm, thicker – 16 mm). Using a finite element model, three outcome measures were determined (1) the amount of bone-to-implant contact, (2) changes in cortical and trabecular bone stresses from the intact state, and (3) changes in cortical and trabecular strain energy densities which can predict bone remodeling or stress shielding. Results: Increasing the size of the humeral stem had no significant effects on bone-to-implant contact during loading (P > .07). The thinner implant with the lowest canal fill ratio produced significantly lower changes in stress from the intact state in both cortical and trabecular bone (P |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2666-6383 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S2666638321001559; https://doaj.org/toc/2666-6383 |
| DOI: | 10.1016/j.jseint.2021.05.006 |
| URL الوصول: | https://doaj.org/article/8362123625bb4299b593f1ba91780668 |
| رقم الانضمام: | edsdoj.8362123625bb4299b593f1ba91780668 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 26666383 |
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| DOI: | 10.1016/j.jseint.2021.05.006 |