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DC Field | Value | Language |
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dc.contributor.author | Chanlalit C. | |
dc.contributor.author | Shukla D.R. | |
dc.contributor.author | Fitzsimmons J.S. | |
dc.contributor.author | An K.-N. | |
dc.contributor.author | O'Driscoll S.W. | |
dc.date.accessioned | 2021-04-05T03:34:06Z | - |
dc.date.available | 2021-04-05T03:34:06Z | - |
dc.date.issued | 2012 | |
dc.identifier.issn | 10582746 | |
dc.identifier.other | 2-s2.0-84862651249 | |
dc.identifier.uri | https://ir.swu.ac.th/jspui/handle/123456789/14316 | - |
dc.identifier.uri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84862651249&doi=10.1016%2fj.jse.2011.05.001&partnerID=40&md5=e96495e951ef512dc67512044192403a | |
dc.description.abstract | Background: Successful bone ingrowth around cementless implants requires adequate initial stability. Hoop stress fractures during stem insertion can potentially hinder prosthesis stability. Hypothesis: We hypothesized that an oversized radial head prosthetic stem (1 mm "too large" and causing a hoop stress fracture during insertion) would result in an unacceptable amount of micromotion. Materials and methods: Grit-blasted radial head prosthetic stems were implanted into cadaveric radii. Rasp and stem insertion energies were measured, along with micromotion at the stem tip. The sizes were increased until a fracture developed in the radial neck. Results: Prosthetic radial head stems that were oversized by 1 mm caused small cracks in the radial neck. Micromotion of oversized stems (42 ± 7 μm) was within the threshold conducive for bone ingrowth (<100 μm) and not significantly different from that for the maximum sized stems (50 ± 12 μm) (P ≥.4). Discussion: Contrary to our hypothesis, hoop stress fractures caused by implantation of a stem oversized by 1 mm did not result in loss of stability. Stem micromotion remained within the range for bone ingrowth and was not significantly diminished after the fracture. This suggests that if a crack occurs during the final stages of stem insertion, it may be acceptable to leave the stem in place without adding a cerclage wire. Conclusion: A small radial neck fracture occurring during insertion of a radial head prosthetic stem oversized by 1 mm does not necessarily compromise initial stability. © 2012 Journal of Shoulder and Elbow Surgery Board of Trustees. | |
dc.subject | arm prosthesis | |
dc.subject | article | |
dc.subject | cerclage | |
dc.subject | clinical article | |
dc.subject | human | |
dc.subject | human tissue | |
dc.subject | micromotion | |
dc.subject | motion | |
dc.subject | priority journal | |
dc.subject | radius fracture | |
dc.subject | stress fracture | |
dc.subject | Aged, 80 and over | |
dc.subject | Analysis of Variance | |
dc.subject | Arthroplasty, Replacement, Elbow | |
dc.subject | Biomechanics | |
dc.subject | Cadaver | |
dc.subject | Coated Materials, Biocompatible | |
dc.subject | Elbow Joint | |
dc.subject | Elbow Prosthesis | |
dc.subject | Female | |
dc.subject | Fractures, Stress | |
dc.subject | Humans | |
dc.subject | Male | |
dc.subject | Motion | |
dc.subject | Osseointegration | |
dc.subject | Prosthesis Design | |
dc.subject | Prosthesis Failure | |
dc.subject | Radius | |
dc.subject | Random Allocation | |
dc.subject | Stress, Mechanical | |
dc.subject | Surface Properties | |
dc.title | Effect of hoop stress fracture on micromotion of textured ingrowth stems for radial head replacement | |
dc.type | Article | |
dc.rights.holder | Scopus | |
dc.identifier.bibliograpycitation | Journal of Shoulder and Elbow Surgery. Vol 21, No.7 (2012), p.949-954 | |
dc.identifier.doi | 10.1016/j.jse.2011.05.001 | |
Appears in Collections: | Scopus 1983-2021 |
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