ArticleSICOT-J2024
Accuracy of acetabular cup positioning in robotic-assisted total hip arthroplasty: a CT-based evaluation.
Article in SICOT-J, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Imageless navigation demonstrates limited anteversion agreement with postoperative EOS assessment in lateral decubitus total hip arthroplasty.Journal of robotic surgery · 2026Trial
- Robotic-Assisted Total Hip Arthroplasty: Implications for Surgical Practice and Operating Theatre Design.Medicina (Kaunas, Lithuania) · 2026Review
- Comparison of accuracy of acetabular cup placement using manual versus robotic-assistance in the same patient cohort undergoing robotic-assisted total hip arthroplasty.Journal of robotic surgery · 2026Observational
- Surgical accuracy of open platform image-based robotic-assisted total hip arthroplasty.Arthroplasty (London, England) · 2026Article
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionRobot-assisted instrumentation during total hip arthroplasty (THA) has the potential to improve acetabular cup positioning. This study aimed to evaluate the precision of robotic-arm-assisted THA (rTHA) and assess whether the system can provide accurate cup positioning comparable to conventional THA (cTHA).
methodsA single-center prospective cohort study consisting of 151 patients who underwent THA (108 rTHA and 43 cTHA). The robotically assisted system was used to match the postoperative computed tomography (CT) image of the pelvis with the planned and intraoperative anatomical landmarks. The cTHA cohort underwent hip replacement using the standard manual procedure, with acetabular component locations assessed during and after surgery.
resultsThe rTHA cohort was significantly younger, but no other significant differences were found between the two cohorts in preoperative baseline data. In rTHA cohort, the planned inclination (40.0 ± 0.3°) closely matched the intraoperative (40.2 ± 2.7°; p = 0.54) and postoperative (40.7 ± 4.0°; p = 0.07) measurements. However, anteversion showed a significant increase from planned (19.4 ± 1.5°) to postoperative CT scan (28.7 ± 7.0°; p < 0.001). There was evidence of proportional bias in the measurements (p < 0.001). In the cTHA cohort, the mean inclination (43.1 ± 5.1°) did not show any significant change between the preoperative plans and postoperative assessments (p = 0.12); however, there was a remarkable change in the mean anteversion (17.6 ± 6.4°) between postoperative measurements and the preoperative plans (p < 0.001). The average anteversion in the preoperative plans did not differ remarkably between the rTHA and cTHA cohorts. However, the average inclination was substantially different between the two cohorts (p < 0.001). Both groups had no significant differences in the proportion of cups outside the referenced safe zones.
conclusionThe results suggest that while robotic-assisted guidance ensures consistent cup inclination, there may be more variability in achieving the planned anteversion, which warrants further investigation into the factors influencing postoperative changes in acetabular orientation.
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