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September 10, 2025Journal of Bone and Joint SurgeryOpen Access

Radiostereometric Insights into Total Knee Arthroplasty: Cemented and Uncemented Fixation with an Asymmetrical Tibial Component

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Authors

NHNicholas M. HernandezUniversity of WashingtonJTJustin E. TangUniversity of Washington

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Implication

Randomized controlled trial shows comparable MTPM between cemented and uncemented total knee arthroplasty components, suggesting acceptable early migration values.

Key Points

  • The study found mean MTPM migration at 12 months was 0.72 mm for cemented and 0.79 mm for uncemented components.
  • Early implant migration detection is correlated with aseptic loosening, emphasizing the importance of rigorous evaluation.
  • Significant differences in migration were noted, with uncemented components showing greater movement than cemented ones at 24 months.
  • Overall results support the potential for long-term success of the evaluated TKA design based on acceptable migration values.

Cite This Study

Hernandez et al. (2025) studied this question.

synapsesocial.com/papers/68c1840e9b7b07f3a06106dchttps://doi.org/10.2106/jbjs.25.00669
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1A new cementless tibial baseplate in kinematically aligned total knee arthroplasty has low migration and stabilizes at 3 months: A cohort study using radiostereometric analysis2026
  2. 2Similar 1-year tibial implant migration, but higher continuous migration with cementless fixation: a retrospective RSA study of 990 patients with moderate to severe knee osteoarthritis2026
  3. 3Preoperative proximal tibial bone density, bone microarchitecture, and bone turnover are not associated with postoperative tibial component migration in cemented and cementless medial unicompartmental knee replacements: secondary analyses from a randomized controlled trial2024 · 3 citations
  4. 4Tibial implant migration of cemented and cementless total and unicompartmental knee arthroplasties in patients with low and normal bone mineral density: a 5-year RSA cohort study of 397 cases2026
  5. 5Early migration following revision total knee arthroplasty with tibial metaphyseal cones: a 2-year prospective RSA cohort study of 25 patients2026