ArticleActa orthopaedica2012
Longitudinal migration and inducible displacement of the Mobility Total Ankle System.
Article in Acta orthopaedica, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Inducible displacement CT for implant loosening detection: a scoping review on methods, validation, and challenges.Acta orthopaedica · 2026Article
- Guideline for RSA and CT-RSA implant migration measurements: an update of standardizations and recommendations.Acta orthopaedica · 2024Article
- In Vivo Total Ankle Arthroplasty Kinematic Evaluation: A Prospective Radiostereometric Analysis.Biomedicines · 2024Article
- Lack of Consensus on the Definition of Aseptic Loosening in Total Ankle Replacement: A Narrative Systematic Review.Journal of clinical medicine · 2024Review
- Body Mass Index (BMI) Cutoffs and Racial, Ethnic, Sex, or Age Disparities in Patients Treated With Total Ankle Arthroplasty.Foot & ankle orthopaedics · 2023Article
- Republication of "Perspectives in Treatments of End-Stage Ankle Arthritis Among Orthopaedic Surgeons: Analysis of an American Orthopaedic Foot & Ankle Society (AOFAS) Member Survey".Foot & ankle orthopaedics · 2023Article
- Development and validation of a clinical tool to semi-automatic measure three-dimensional TAR alignment on two-dimensional radiographs.Journal of foot and ankle research · 2023Article
- Hybrid-Total Ankle Arthroplasty (H-TAA) for Failed Talar Component in Mobile-Bearing Total Ankle Arthroplasty.Journal of clinical medicine · 2023Article
- "Great balls on fire:" known algorithm with a new instrument?Acta orthopaedica · 2020Article
- Total ankle replacement design and positioning affect implant-bone micromotion and bone strains.Medical engineering & physics · 2017Article
- Bone microarchitecture of the talus changes with aging.Clinical orthopaedics and related research · 2013Article
Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
background and purposeRSA can be used for early detection of unstable implants. We assessed the micromotion of the Mobility Total Ankle System over 2 years, to evaluate the stability of the bone-implant interface using radiostereometric analysis measurements of longitudinal migration and inducible displacement. PATIENTS AND
methods23 patients were implanted with the Mobility system. Median age was 62 (28-75) years and median BMI was 28.8 (26.0-34.5). Supine radiostereometric analysis examinations were done from postoperatively to the 2-year follow-up. Standing examinations were taken from the 3-month to the 2-year follow-up. Migrations and displacements were assessed using model-based RSA software (v. 3.2).
resultsThe median maximum total point motion (MTPM) for the implants at 2 years was 1.19 (0.39-1.95) mm for the talar component and 0.90 (0.17-2.28) mm for the spherical tip of the tibial component. The general pattern for all patients was that the slope of the migration curves decreased over time. The main direction of motion for both components was that of subsidence. The median 2-year MTPM inducible displacement for the talar component was 0.49 (0.27-1.15) mm, and it was 0.07 (0.03-0.68) mm for the tibial component tip.
interpretationThe implants subside into the bone over time and under load. This corresponds to the direction of primary loading during standing or walking. This statistically significant motion may become a clinically significant finding that would correspond with premature implant failure.
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