ArticleArchives of orthopaedic and trauma surgery2025
The vast majority of radiolucent lines disappeared at 3 years follow-up in modern cementless posterior stabilized mobile-bearing total knee arthroplasty.
Article in Archives of orthopaedic and trauma surgery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed.
- Radiographic features of bone ingrowth in highly porous cementless total knee arthroplasty with minimum 2-year follow-up.Arthroplasty (London, England) · 2026Article
- Cement mantle thickness in total knee arthroplasty more closely associated with tibial bone density than cement viscosity : findings from a randomized controlled trial.Bone & joint open · 2026Article
- Low frequency of radiolucent lines in 3D-printed porous-coated tibial cementless baseplate at 1-year follow-up.Journal of experimental orthopaedics · 2025Article
- Reframing Fixation Strategy in Total Knee Arthroplasty With Tibial Bone Density as a Central Criterion.JB & JS open accessReview
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe purpose of this study was to evaluate the natural history of radiolucent lines (RLLs) in modern cementless posterior-stabilized (PS) mobile-bearing total knee arthroplasty (TKA) at 3-year follow-up.
methodsOur cohort was composed of 45 cementless and 45 cemented TKAs. Patients were retrospectively reviewed after 1:1 matching for age, gender, body mass index, and preoperative UCLA score. All operative procedures were performed by a single surgeon using a cementless or cemented TKA of the same design between 2019 and 2021. The incidence of RLLs was reviewed at 1 week, 6 months, 1 year, 2 years, and 3 years postoperatively. Bone on-growth over the surface of the implants were also reviewed at 3 years postoperatively. Fisher's exact test, independent Student's t-test, or Mann-Whitney U test were used for statistical analyses.
resultsAlthough the incidence of RLLs was significantly higher in cementless TKAs (33/45 knees; 73%) than that in cemented TKAs (10/45 knees; 22%, P <.01) at 6 months postoperatively, RLLs in cementless TKAs disappeared in 29 of 33 knees (88%) at 3-year postoperatively and those of cemented TKAs had increased up to 17 of 45 knees (38%). Bone on-growth over the surface of the implants was observed in 43 of 45 knees (93%) in the cementless TKAs at 3 years postoperatively.
conclusionThis study showed that nonprogressive RLLs in recently introduced cementless PS mobile-bearing TKA designs are expected to disappear over time. LEVEL OF EVIDENCE: Retrospective cohort study, Level III.
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