In Vivo MicroCT Monitoring of Osteomyelitis in a Rat Model
Joint Authors
Stadelmann, Vincent A.
Potapova, Inga
Camenisch, Karin
Nehrbass, Dirk
Moriarty, T. Fintan
Richards, R. Geoff
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-04-29
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Infection associated with orthopedic implants often results in bone loss and requires surgical removal of the implant.
The aim of this study was to evaluate morphological changes of bone adjacent to a bacteria-colonized implant, with the aim of identifying temporal patterns that are characteristic of infection.
In an in vivo study with rats, bone changes were assessed using in vivo microCT at 7 time points during a one-month postoperative period.
The rats received either a sterile or Staphylococcus aureus-colonized polyetheretherketone screw in the tibia.
Bone-implant contact, bone fraction, and bone changes (quiescent, resorbed, and new bone) were calculated from consecutive scans and validated against histomorphometry.
The screw pullout strength was estimated from FE models and the results were validated against mechanical testing.
In the sterile group, bone-implant contact, bone fraction, and mechanical fixation increased steadily until day 14 and then plateaued.
In the infected group, they decreased rapidly.
Bone formation was reduced while resorption was increased, with maximum effects observed within 6 days.
In summary, the model presented is capable of evaluating the patterns of bone changes due to implant-related infections.
The combined use of longitudinal in vivo microCT imaging and image-based finite element analysis provides characteristic signs of infection within 6 days.
American Psychological Association (APA)
Stadelmann, Vincent A.& Potapova, Inga& Camenisch, Karin& Nehrbass, Dirk& Richards, R. Geoff& Moriarty, T. Fintan. 2015. In Vivo MicroCT Monitoring of Osteomyelitis in a Rat Model. BioMed Research International،Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1056025
Modern Language Association (MLA)
Stadelmann, Vincent A.…[et al.]. In Vivo MicroCT Monitoring of Osteomyelitis in a Rat Model. BioMed Research International No. 2015 (2015), pp.1-12.
https://search.emarefa.net/detail/BIM-1056025
American Medical Association (AMA)
Stadelmann, Vincent A.& Potapova, Inga& Camenisch, Karin& Nehrbass, Dirk& Richards, R. Geoff& Moriarty, T. Fintan. In Vivo MicroCT Monitoring of Osteomyelitis in a Rat Model. BioMed Research International. 2015. Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1056025
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1056025