ArticleJB & JS open access
Medial-Pivot Total Knee Arthroplasty with Kinematic Alignment Produces Similar Clinical Outcomes in Valgus and Varus Deformities.
Article in JB & JS open access. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Mechanical alignment total knee arthroplasty (TKA) in valgus knees requires soft tissue releases and complex techniques that are unnecessary with kinematic alignment (KA). Few studies have evaluated the outcomes of KA in valgus knees, and fewer have studied KA with medial-pivot (MP) implants. This study compared the clinical outcomes of KA-TKA with MP implants (KA/MP-TKA) in patients with preoperative varus versus valgus alignment. We hypothesized that outcomes following KA/MP-TKA would be equivalent. Methods: A prospective database was queried to identify patients who underwent primary KA-TKA with MP implants. Patients were included if they had a preoperative hip-knee-ankle angle ≤177° (varus, n = 302) or ≥183° (valgus, n = 51). A total of 353 consecutive patients were identified. The Forgotten Joint Score (FJS), Knee Injury and Osteoarthritis Outcome Score (KOOS-JR), Knee Society Score (KSS), and range of motion were collected preoperatively and at 6-week, 6-month, and 1-year visits. Results: Patients with preoperative valgus alignment had worse KSS Function and KOOS-JR scores preoperatively (p = 0.04 and p = 0.02, respectively); all other baseline outcomes were comparable. Postoperatively, the valgus group demonstrated better KOOS-JR at 6 weeks (p = 0.004), KSS Pain-Motion at 6 months (p = 0.02), and FJS at 1 year (p = 0.03). The varus group showed better KSS Function at all postoperative visits (p < 0.02). There were no statistically significant differences in flexion or extension between the groups. Conclusions: Patients with valgus alignment undergoing KA/MP-TKA achieved postoperative outcomes that were clinically equivalent or superior to those of patients with varus alignment. These findings support KA-TKA using MP implants as an appropriate surgical approach for preoperative valgus alignment.
Identifiers
What 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.