Fatigue Fracture in Dual Modular Revision Total Hip Arthroplasty Stems: Failure Analysis and Computed Tomography Diagnostics in Two Cases.
(2014) In Journal of Arthroplasty 29(4). p.850-855- Abstract
- We report on two patients with fracture of a modular, tapered and distally fixed, uncemented titanium revision hip stem, not previously described. A failure analysis revealed that the cause of the fractures was the development of fatigue cracks in the mid-stem cobalt-chromium modular junction ending in corrosion-fatigue failure. No material defects or stress risers were found in any of the implants. The diameter of the mid-stem modular junction might be undersized for use in heavy and active patients. We also report a new way of detecting an undisplaced fracture at the modular junction, using the scout image from a computed tomography (CT) scan; a technique that can be used when plain radiographs are inconclusive.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4143331
- author
- Norman, Pontus ; Iyengar, Srinivasan ; Svensson, Ingrid and Flivik, Gunnar LU
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Arthroplasty
- volume
- 29
- issue
- 4
- pages
- 850 - 855
- publisher
- Elsevier
- external identifiers
-
- pmid:24120507
- wos:000334094000044
- scopus:84896542111
- pmid:24120507
- ISSN
- 0883-5403
- DOI
- 10.1016/j.arth.2013.09.008
- language
- English
- LU publication?
- yes
- id
- eec166ac-2336-4371-b6f6-38bf6fb4e0f3 (old id 4143331)
- alternative location
- http://www.ncbi.nlm.nih.gov/pubmed/24120507?dopt=Abstract
- date added to LUP
- 2016-04-01 10:55:35
- date last changed
- 2022-04-28 02:51:51
@article{eec166ac-2336-4371-b6f6-38bf6fb4e0f3, abstract = {{We report on two patients with fracture of a modular, tapered and distally fixed, uncemented titanium revision hip stem, not previously described. A failure analysis revealed that the cause of the fractures was the development of fatigue cracks in the mid-stem cobalt-chromium modular junction ending in corrosion-fatigue failure. No material defects or stress risers were found in any of the implants. The diameter of the mid-stem modular junction might be undersized for use in heavy and active patients. We also report a new way of detecting an undisplaced fracture at the modular junction, using the scout image from a computed tomography (CT) scan; a technique that can be used when plain radiographs are inconclusive.}}, author = {{Norman, Pontus and Iyengar, Srinivasan and Svensson, Ingrid and Flivik, Gunnar}}, issn = {{0883-5403}}, language = {{eng}}, number = {{4}}, pages = {{850--855}}, publisher = {{Elsevier}}, series = {{Journal of Arthroplasty}}, title = {{Fatigue Fracture in Dual Modular Revision Total Hip Arthroplasty Stems: Failure Analysis and Computed Tomography Diagnostics in Two Cases.}}, url = {{http://dx.doi.org/10.1016/j.arth.2013.09.008}}, doi = {{10.1016/j.arth.2013.09.008}}, volume = {{29}}, year = {{2014}}, }