ArticleArthroplasty today2021
Does the anatomic design of total knee prosthesis allow for a better component fit than its nonanatomic predecessor? A matched cohort Study.
Article in Arthroplasty today, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.
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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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
7 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Comparison of the coverage and rotation of asymmetrical and symmetrical tibial components: a systematic review and meta-analysis.BMC musculoskeletal disorders · 2024Pooled it
- Differences in joint line level and posterior condylar offset during total knee replacement with use of gap-balancing and measured resection techniques-matched cohort study.BMC musculoskeletal disorders · 2023Trial
- Minimum ten years follow-up of total knee arthroplasty using morphometric implants in patients with osteoarthritis.International orthopaedics · 2026Article
- What Are the Game Changers in Total Knee Arthroplasty? A Narrative Review.Journal of personalized medicine · 2025Review
- The augmented reality-aided navigation system may improve rotational alignment of the tibial baseplate in total knee arthroplasty.BMC musculoskeletal disorders · 2025Article
- Inducible Displacement of Cementless Femoral and Tibial Components Throughout Weight-bearing Flexion.Arthroplasty today · 2025Article
- Novel morphogenic knee implant delivers comparable mid-term outcomes as compared to conventional non-morphogenic implants.Archives of orthopaedic and trauma surgery · 2023Article
Corrections and comments
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Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundTotal knee arthroplasty (TKA) is considered the most efficient treatment of end-stage osteoarthritis. There is an ongoing debate about proper implant designs and articulation types. One of the considered causes of unsatisfactory outcome and patients' dissatisfaction is femoral or tibial component overhanging, which can lead to chronic knee pain and restricted motion. The aim of this study is to compare radiological outcomes of TKA using an anatomic PERSONA Posterior-Stabilized (PS) knee design with its nonanatomic predecessor, the NexGen LPS.
methodsA group of 39 patients who received the PERSONA PS system and 33 patients who received the NexGen LPS was included. PERSONA patients were matched to NexGen patients using a 0.1 propensity score threshold with priority given to exact matches. Anteroposterior, lateral, and long-leg radiographs were taken preoperatively and at 6 weeks postoperatively to perform radiological and statistical analysis.
resultsThe PERSONA subgroup had statistically higher posterior condylar offset. There is no statistically significant difference in posterior condylar offset ratio. There were less cases of femoral notching, femoral overhang, and placing tibial baseplate in the medial overhang in the PERSONA PS subgroup than in the NexGen subgroup (each statistically significant). Occurrence of tibial underhang was not statistically significant.
conclusionRadiological assessment in short-term follow-up showed excellent results for PERSONA knee design with better fit to native femur and tibia. In comparison to its predecessor, it also spares more bone tissue. As the aforementioned parameters are risk factors of lesser clinical outcomes, the PERSONA design gives high hopes for improvement of TKA satisfaction rate.
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