دورية أكاديمية
Gross Taper Failure and Fracture of the True Neck in Total Hip Arthroplasty: Retrieval Scanning Electron Microscope Analysis
| العنوان: | Gross Taper Failure and Fracture of the True Neck in Total Hip Arthroplasty: Retrieval Scanning Electron Microscope Analysis |
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| المؤلفون: | Corrado Ciatti, Michelangelo Moschella, Edoardo Bori, Carlo Doria, Gianfilippo Caggiari, Bernardo Innocenti, Francesco Pisanu |
| المصدر: | Medicina, Vol 60, Iss 3, p 458 (2024) |
| بيانات النشر: | MDPI AG, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Medicine (General) |
| مصطلحات موضوعية: | metallosis, gross trunnion fracture, Morse cone, SEM analysis, mechanically assisted crevice corrosion, revision surgery, Medicine (General), R5-920 |
| الوصف: | Background and objectives: wear and corrosion can lead to the gross failure of the Morse taper junction with the consequent fracture of the true neck of the prosthetic stem in hip arthroplasty. Materials and Methods: 58-year-old male patient, with a BMI of 38 kg/m2. Because of avascular necrosis, in 2007, a metal-on-metal total hip arthroplasty was implanted in him, with a TMZF stem and a Co-Cr head. In December 2020, he complained of acute left hip pain associated with the deterioration of his left leg and total functional impairment, preceded by the crunching of the hip. X-rays and CT scan showed a fracture of the prosthetic neck that necessitated prosthetic revision surgery. A Scanning Electron Microscope (SEM) analysis of the retrieved prosthetic components was conducted. Results: Macroscopically, the trunnion showed a typical bird beak appearance, due to a massive material loss of about half of its volume. The gross material loss apparently due to abrasion extended beyond the trunnion to the point of failure on the true neck about half a centimeter distal from the taper. SEM analysis demonstrated fatigue rupture modes, and the crack began close to the neck’s surface. On the lateral surface, several scratches were found, suggesting an intense wear that could be due to abrasion. Conclusions: The analysis we conducted on the explanted THA showed a ductile rupture, began close to the upper surface of the prosthetic neck where the presence of many scratches had concentrated stresses and led to a fatigue fracture. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1648-9144 1010-660X |
| العلاقة: | https://www.mdpi.com/1648-9144/60/3/458Test; https://doaj.org/toc/1010-660XTest; https://doaj.org/toc/1648-9144Test |
| DOI: | 10.3390/medicina60030458 |
| الوصول الحر: | https://doaj.org/article/a13ae3caf7594688826202c71565dbd0Test |
| رقم الانضمام: | edsdoj.13ae3caf7594688826202c71565dbd0 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 16489144 1010660X |
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| DOI: | 10.3390/medicina60030458 |