Robotic-assisted primary total hip arthroplasty is not associated with superior clinically meaningful patient-reported outcomes or complication rates in obese patients: a propensity-matched analysis.

Authors

Isaiah A Freeman, Muhammad Hamza Ilyas, Dharsini Rangaswamy, Carlo M Mannina, William T Sampson, Young-Min Kwon

Published in

European journal of orthopaedic surgery & traumatology : orthopedie traumatologie. Volume 36. Issue 1. Jul 04, 2026. Epub Jul 04, 2026.

Abstract

Obesity is increasingly prevalent among total hip arthroplasty (THA) patients and is associated with greater complications and worse patient-reported outcome measures (PROMs). Robotic-assisted THA (R-THA) improves component positioning compared to conventional, manual THA (C-THA); however, its impact on PROMs in obese patients remains unclear. This study aimed to evaluate postoperative PROMs and complications between obese patients undergoing C-THA and R-THA using a propensity-matched analysis.
A single-institution database was used to identify 4136 consecutive primary THA patients. Patients with body mass index > 30 and at least two years of follow-up were included. Propensity matching was conducted in a 3:1 ratio, which led to balanced attributes between 267 C-THA and 89 R-THA patients (P > 0.05). The mean absolute and delta scores were compared. Minimal clinically important difference (MCID) thresholds were calculated and patients were categorized as improved, unchanged, or worsened. The medical and surgical complications were recorded.
Absolute and delta scores for all PROMs were similar between groups (P > 0.05). There were no significant differences in MCID-level improvement rates for any PROM (P > 0.05). There were no significant differences in 90-day or one- or two-year complication rates (P > 0.05).
In obese patients, C-THA and R-THA did not differ in clinically meaningful improvement across multiple PROMs or complication rates. Within this single-institution cohort, R-THA was not associated with superior patient-centered outcomes compared to C-THA.

PMID:
42400863
Bibliographic data and abstract were imported from PubMed on 05 Jul 2026.

Read full publication at:
Please sign in to see all details.

Stats

1-terrible, 9-excellent. How would you rate this publication? Sign in in to submit your rating.

Post a comment

You need to be signed in to post comments. You can sign in here.

Comments

There are no comments yet.