ArticleArthroplasty (London, England)2026
Association between functional combined anteversion and dislocation after revision total hip arthroplasty.
Article in Arthroplasty (London, England), 2026. 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
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundDislocation is a serious complication that should be avoided in total hip arthroplasty (THA). Combined anteversion (CA) of the cup and stem is a concept for appropriate implant positioning; however, the effect of functional changes in femoral rotation has not been well investigated. In this study, we investigated whether functional CA, considering femoral rotation, is associated with dislocation in patients who underwent revision THA.
methodsOverall, 82 patients who underwent revision THA and had at least one year of follow-up with pre-operative and post-operative supine computed tomography imaging were included. The cup and stem were placed with a target combined angle of 37.3° using Widmer's formula. Anatomical and functional CAs were calculated post-operatively. Functional CA was defined as the sum of cup anteversion and stem anteversion, with femoral external rotation. Patient demographics, component alignment parameters, CA, and their association with post-operative dislocation were statistically evaluated.
resultsDislocation was observed in 12 patients. In these dislocated cases, there were no significant differences in cup angle, stem angle, and anatomical CA compared to non-dislocated cases. However, dislocated cases showed significantly higher values of functional CA (50.0 ± 17.4° [range, 5.5-67.6] vs. 35.6 ± 13.0° [range, 4.0-68.8], p = 0.022) and significant deviation from identical CA [15.0 ± 8.9° [range, 3.1-31.8] vs. 7.5 ± 8.1° [range, 0.1-33.3], p = 0.014).
conclusionsFunctional CA, considering femoral rotation, was associated with post-operative dislocation after revision THA. Therefore, consideration of femoral rotation may be important for implant positioning in revision THA.
Indexed as
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.