Late Nontraumatic Dissociation of the Femoral Head and Trunnion in a Total Hip Arthroplasty
Joint Authors
Parker, Simon
Mellor, Simon
Khan, Wasim S.
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-05-11
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Abstract EN
Background.
Modular total hip arthroplasties are increasingly popular because customisation allows optimal restoration of patient biomechanics.
However, the introduction of component interfaces provides greater opportunities for failure.
We present a case of late nontraumatic dissociation of the head-neck interface, more than 10 years after insertion.
Case Description.
A 58-year-old woman had a left metal-on-metal total hip arthroplasty in 2002 for hip dysplasia.
Following an uneventful 10-year period, she presented to hospital in severe pain after standing from a seated position, and radiographs demonstrated complete dissociation of the modular femoral head from the stem, with the femoral head remaining in its cup.
There was no prior trauma or infection.
Mild wear and metallosis were present on the articulating surface between the femoral head and trunnion.
Soft tissues were unaffected.
Discussion and Conclusions.
This is the latest occurrence reported to date for nontraumatic component failure in such an implant by more than 7 years.
The majority of cases occur in the context of dislocation and attempted closed reduction.
We analyse and discuss possible mechanisms for failure, aiming to raise awareness of this potential complication and encouraging utmost care in component handling and insertion, as well as the long term follow-up of such patients.
American Psychological Association (APA)
Parker, Simon& Khan, Wasim S.& Mellor, Simon. 2015. Late Nontraumatic Dissociation of the Femoral Head and Trunnion in a Total Hip Arthroplasty. Case Reports in Orthopedics،Vol. 2015, no. 2015, pp.1-5.
https://search.emarefa.net/detail/BIM-1059535
Modern Language Association (MLA)
Parker, Simon…[et al.]. Late Nontraumatic Dissociation of the Femoral Head and Trunnion in a Total Hip Arthroplasty. Case Reports in Orthopedics No. 2015 (2015), pp.1-5.
https://search.emarefa.net/detail/BIM-1059535
American Medical Association (AMA)
Parker, Simon& Khan, Wasim S.& Mellor, Simon. Late Nontraumatic Dissociation of the Femoral Head and Trunnion in a Total Hip Arthroplasty. Case Reports in Orthopedics. 2015. Vol. 2015, no. 2015, pp.1-5.
https://search.emarefa.net/detail/BIM-1059535
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1059535