Bio-Environment-Induced Degradation and Failure of Internal Fixation Implants
Internal fixations provide fast healing but their failure remains problematic to patients. Here, we report an experimental study in failure of three typical cases of metals: a bent intramedullary stainless steel nail, a broken exterior pure Ti plate, and a broken intramedullary stainless steel nail....
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2015-10-01
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| Series: | Journal of Functional Biomaterials |
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| Online Access: | http://www.mdpi.com/2079-4983/6/4/1012 |
| _version_ | 1798043192119001088 |
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| author | Yan Zhou Luke A. Perkins Guodong Wang Dongsheng Zhou Hong Liang |
| author_facet | Yan Zhou Luke A. Perkins Guodong Wang Dongsheng Zhou Hong Liang |
| author_sort | Yan Zhou |
| collection | DOAJ |
| description | Internal fixations provide fast healing but their failure remains problematic to patients. Here, we report an experimental study in failure of three typical cases of metals: a bent intramedullary stainless steel nail, a broken exterior pure Ti plate, and a broken intramedullary stainless steel nail. Characterization of the bent nail indicates that those metals are vulnerable to corrosion with the evidence of increased surface roughness and embrittlement. Depredated surface of the Ti plate resulted debris particles in the surrounding tissue of 15.2 ± 6.5 μm in size. Nanoparticles were observed in transmission electron microscope. The electron diffraction pattern of the debris indicates a combination of nanocrystalline and amorphous phases. The failure mode of the broken nail made of stainless steel was found to be fatigue initiated from the surface. This study clearly shows the biological-attack induced surface degradation resulting in debris and fatigue. Future design and selection of implant materials should consider such factors for improvement. |
| first_indexed | 2024-04-11T22:47:08Z |
| format | Article |
| id | doaj.art-48ec1191c57f438187125d679a444545 |
| institution | Directory Open Access Journal |
| issn | 2079-4983 |
| language | English |
| last_indexed | 2024-04-11T22:47:08Z |
| publishDate | 2015-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Functional Biomaterials |
| spelling | doaj.art-48ec1191c57f438187125d679a4445452022-12-22T03:58:44ZengMDPI AGJournal of Functional Biomaterials2079-49832015-10-01641012102010.3390/jfb6041012jfb6041012Bio-Environment-Induced Degradation and Failure of Internal Fixation ImplantsYan Zhou0Luke A. Perkins1Guodong Wang2Dongsheng Zhou3Hong Liang4Materials Science and Engineering, Texas A&M University, College Station, TX 77843, USAMechanical Engineering, Texas A&M University, College Station, TX 77843, USADepartment of Orthopedic Trauma, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, ChinaDepartment of Orthopedic Trauma, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, ChinaMaterials Science and Engineering, Texas A&M University, College Station, TX 77843, USAInternal fixations provide fast healing but their failure remains problematic to patients. Here, we report an experimental study in failure of three typical cases of metals: a bent intramedullary stainless steel nail, a broken exterior pure Ti plate, and a broken intramedullary stainless steel nail. Characterization of the bent nail indicates that those metals are vulnerable to corrosion with the evidence of increased surface roughness and embrittlement. Depredated surface of the Ti plate resulted debris particles in the surrounding tissue of 15.2 ± 6.5 μm in size. Nanoparticles were observed in transmission electron microscope. The electron diffraction pattern of the debris indicates a combination of nanocrystalline and amorphous phases. The failure mode of the broken nail made of stainless steel was found to be fatigue initiated from the surface. This study clearly shows the biological-attack induced surface degradation resulting in debris and fatigue. Future design and selection of implant materials should consider such factors for improvement.http://www.mdpi.com/2079-4983/6/4/1012internal fixationsurface degradationdebris particlestitaniumstainless steelsurface roughnessmicrohardnessfailure mechanismspotentiodynamic polarization scans |
| spellingShingle | Yan Zhou Luke A. Perkins Guodong Wang Dongsheng Zhou Hong Liang Bio-Environment-Induced Degradation and Failure of Internal Fixation Implants Journal of Functional Biomaterials internal fixation surface degradation debris particles titanium stainless steel surface roughness microhardness failure mechanisms potentiodynamic polarization scans |
| title | Bio-Environment-Induced Degradation and Failure of Internal Fixation Implants |
| title_full | Bio-Environment-Induced Degradation and Failure of Internal Fixation Implants |
| title_fullStr | Bio-Environment-Induced Degradation and Failure of Internal Fixation Implants |
| title_full_unstemmed | Bio-Environment-Induced Degradation and Failure of Internal Fixation Implants |
| title_short | Bio-Environment-Induced Degradation and Failure of Internal Fixation Implants |
| title_sort | bio environment induced degradation and failure of internal fixation implants |
| topic | internal fixation surface degradation debris particles titanium stainless steel surface roughness microhardness failure mechanisms potentiodynamic polarization scans |
| url | http://www.mdpi.com/2079-4983/6/4/1012 |
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