ArticleArchives of orthopaedic and trauma surgery2024
Appearance and evolution of radiolucent lines below the tibial implant in primary total knee arthroplasty.
Article in Archives of orthopaedic and trauma surgery, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 4 citations in OpenAlex.
- Radiolucent lines after robotic-assisted surface-matching kinematically aligned UKA: short-term incidence and lack of association with tibial alignment.Archives of orthopaedic and trauma surgery · 2026Article
- Inducible displacement CT for implant loosening detection: a scoping review on methods, validation, and challenges.Acta orthopaedica · 2026Article
- Risk Factors for Physiologic Radiolucent Lines Under the Tibial Base Plate After Osteoarthritis With Primary Computer-Assisted Navigation TKA-A Nested Case-Control Study.Orthopaedic surgery · 2025Article
- Survival of primary total knee arthroplasty in a modern anatomic implant with and without a short stem extension.Archives of orthopaedic and trauma surgery · 2025Article
- Survival of primary total knee arthroplasty in a modern anatomic implant with and without a short stem extension.Archives of orthopaedic and trauma surgery · 2025Article
Corrections and comments
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Authors and funding
2 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe aim of this study was to evaluate total knee arthroplasty (TKA) radiographically to detect the occurrence of radiolucent lines (RLL) under the tibial base plate and to determine what type of RLL may have a correlation with aseptic loosening (AL). The study had two hypotheses: (1) RLLs may have different radiological aspects and evolutions in time depending of different factors (2) Signs of micro- and/or macro-mobility of the implant are necessary before diagnosing aseptic loosening of the tibial component.
methodsRetrospective cohort study of 774 patients operated with a Vanguard TKA (Zimmer Biomet, Warsaw, IN, US) from 2007 to 2015. RLLs were recorded in a database and described according to their radiological aspect, localization, time of apparition, progression and eventual evolution to AL. Other collected parameters were pre- and post-operative HKA angles, amount of post-operative HKA correction, surgical, clinical and demographic data.
results178/774 TKAs (23%) showed RLLs under the tibial base plate including 9 (1.2%) tibial implants needing revision for AL. Three different types and two aspects of RLLs were observed. Important deformity corrections or undercorrected implants were recognized as a mechanical risk factor for loosening. Elderly women with osteoporosis and young men with important pre-operative deformities were identified as clinical risk factors for RLLs.
conclusionsRLLs are frequently present at the epiphyseal bone/implant interface after total knee arthroplasty, but do not mean the implant is loose. They can be considered a sign of reduced epiphyseal surface fixation due to micro mobility of the tibial implant. Aseptic loosening can be observed radiologically when signs of macro-mobility of the implant are present at the metaphyseal level. LEVEL OF EVIDENCE: III.
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