SynthesisArchives of orthopaedic and trauma surgery2025
Cement or press-fit? Impact of patellar fixation technique on outcomes after primary TKA: a systematic review.
Synthesis 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 1 paper, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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
1 citing paper in PubMed, 1 synthesis or guideline pooled it.
- Functional alignment in robotic total knee arthroplasty provides favourable outcomes and minimal early revisions: A systematic review and meta-analysis.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2026Pooled it
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionThe optimal fixation technique for patellar components in primary total knee arthroplasty (TKA); cemented versus press-fit, remains controversial. While early press-fit designs were associated with complications, second-generation implants with improved osseointegration features have renewed interest in cementless fixation.
methodsThis systematic review included studies comparing cemented and press-fit patellar fixation in primary TKA. A comprehensive literature search identified 202 studies, of which eight met predefined inclusion criteria. Data were extracted on survivorship, revisions, complications, and patient-reported outcome measures (PROMs).
resultsAcross 1666 knees, survivorship was comparable between cemented and press-fit groups. Several studies reported 100% short-term survivorship in cementless cohorts. Four studies identified statistically significant PROM differences, but findings were inconsistent and context-dependent. No clear advantage was found for either fixation type in terms of overall pain, function, or satisfaction. Cementless patellae demonstrated no increased risk of aseptic loosening or patellar fracture. Complications were infrequent and more often reported in cemented groups. DISCUSSION: These findings showed no significant difference in failure or PROMs between fixation methods. While surgical preference remains a driver of implant choice, current evidence does not support a universal superiority of one fixation method over the other.
Indexed as
Identifiers
40875045What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.