ReviewJournal of experimental orthopaedics2026
Outcomes of total hip arthroplasty in obese patients with and without preoperative weight loss: A systematic review and meta-analysis.
Review in Journal of experimental orthopaedics, 2026. 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
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
2 citing papers in PubMed.
- Preoperative pain and achievement of the minimal clinically important difference for physical function one year after total hip arthroplasty: a prospective cohort study.Archives of orthopaedic and trauma surgery · 2026Article
- Mechanically aligned total knee arthroplasty demonstrates acceptable outcomes in obese patients, with insufficient evidence for alternative alignment strategies: A systematic review.Journal of experimental orthopaedics · 2026Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Purpose: Obesity is often considered a relative contraindication to total hip arthroplasty (THA) due to presumed increased perioperative and postoperative risk. Consequently, obese patients are often advised to lose weight prior to THA. However, the effect of preoperative weight loss on THA outcomes remains uncertain. This meta-analysis compared outcomes in obese patients who lost weight preoperatively with those who did not. Methods: This review was performed according to Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) guidelines and registered in PROSPERO. Medline and Embase were searched on 1 February 2025. Two reviewers independently screened and extracted data from studies comparing outcomes in obese patients undergoing primary THA with and without preoperative weight loss. Outcomes of interest (complications, infections, readmissions, reoperations and revisions) were pooled via Freeman-Tukey double arcsine transformations using inverse-variance weighting within a random-effects model framework to calculate estimates of proportions and their corresponding Results: Of 2896 identified references, 8 studies were included, resulting in 4848 patients with preoperative weight loss and 78,860 patients without. Interventions included bariatric surgery (1 study), non-surgical measures (2) and unspecified methods (5). There were no significant differences in outcomes between groups, with regards to complication rates in the short-term (weight loss: 14% vs. control: 8%, Conclusions: Preoperative weight loss in obese patients undergoing THA does not reduce the risk of postoperative complications, infections, readmissions, reoperations or revisions compared with obese patients who did not lose weight preoperatively. These findings question routine weight loss requirements and underscore the need for individualized risk assessment over body mass index alone. Level of Evidence: Level IV.
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