ArticleArchives of orthopaedic and trauma surgery2025
Long-term outcomes of a 3D printed cementless fixed bearing unicompartmental 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 2 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.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
2 citing papers in PubMed.
- Three dimensional printing in unicompartmental knee arthroplasty: current evidence and future directions.International orthopaedics · 2026Review
- Novel Clinical Applications of 3D-Printed Highly Porous Titanium for Off-the-Shelf Cementless Joint Replacement Prostheses.Biomimetics (Basel, Switzerland) · 2025Article
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionCementless fixation of medial unicompartmental knee arthroplasty (UKA) is attracting growing interest as a way to improve implant survival. This study aimed to evaluate the near-decade results, survivorship, and revision causes for a fixed-bearing cementless fully 3D printed UKA. MATERIALS AND
methodsFrom 2011 to 2014, 168 consecutive cementless UKA implants on 165 patients had been performed in our hospital using a fixed bearing implant with a 3D printed Hydroxyapatite coated ingrowth surface both on the femoral and tibia components. At a mean follow-up of 8.73 years, 132 patients were retrospectively available for long-term assessment. Clinical outcomes and survivorship were analyzed using validated Patient Reported Outcome Measures (PROMs) such as the Oxford Knee Score (OKS), the International Knee Society (IKS) Score and the Numeric Rating Scale (NRS). The Hip-Knee-Ankle (HKA) angle was measured preoperatively and postoperatively at the last follow-up. Kaplan-Meier survival analysis was conducted with revision for any reason as primary endpoint and UKA failure as secondary endpoint.
resultsSignificant reductions were observed in terms of mean NRS from 6.90 to 1.49 points (p < 0.0001), OKS from 34.82 to 19.05 points (p < 0.0001), and IKS Score, in particular clinical knee score from 59.13 to 85.61 points (p < 0.0001) and functional knee score from 58.70 to 88.94 points (p < 0.0001). The 10-year survival rate for revision for any reason was 93.6% (95% CI: 89.5-97.8). For revision specifically due to implant mechanical failure, the 10-year survival rate was 94.9% (95% CI: 91.3-98.8). The primary revision cause was aseptic loosening of the tibial component. Factors such as age, BMI, and sex were not significantly associated with an increased risk of revision.
conclusionsThe present study shows good clinical results and long-term implant survivorship, compared to literature data, confirming the effectiveness of cementless UKA.
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