Model-based radiostereometric analysis (MBRSA) of a total ankle arthroplasty (TAA)
prosthesis was studied for the first time.
The TAA MBRSA system precision was determined from the double exams of 20
patients implanted with the Mobility(TM). The MTE for any direction was 0.07mm for the
tibial component. The MTE was 0.09mm and the MRE was 0.51° for the talar
component. The MTPM detection limits were 0.22mm and 0.85mm for the tibial and
talar components.
Both components followed the typical subsidence-stabilization pattern. There was little
detectable continuous migration at one to two years. The median(range) MTPM at two
years was 0.96mm(0.17-2.28mm) and 1.23mm(0.39-1.9 mm) for the tibial and talar
components.
There was no detectable inducible displacement observed for any components at two
years, except one talar component. The median(range) MTPM induced by the loading at
two years was 0.08mm(0.03-0.18mm) and 0.39mm(0.27-1.06mm) for the tibial and talar
components.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:NSHD.ca#10222/13058 |
| Date | 24 August 2010 |
| Creators | Fong, Jason |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Detected Language | English |
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