ArticleArchives of orthopaedic and trauma surgery2025
The degree of pre-operative osteoarthritis is associated with outcome following THA.
Article in Archives of orthopaedic and trauma surgery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.
What it found
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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.
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Who cites it
2 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Prevalence of hip and knee osteoarthritis in Europe: a systematic review and meta-analysis.BMC musculoskeletal disorders · 2026Pooled it
- Association between preoperative radiographic osteoarthritis severity and patient-reported outcomes after total hip arthroplasty: a systematic review and meta-analysis.International orthopaedics · 2026Review
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Authors and funding
6 authors.
Funding
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Abstract
introductionTotal hip arthroplasty (THA) is increasingly offered for less severe hip osteoarthritis (OA). This paper aimed to determine (1) The prevalence of different degrees of OA before THA, (2) The association of pre-operative OA severity with the severity of baseline symptoms and (3) The association of pre-operative OA severity with outcomes post-THA.
methodsA retrospective study of a database of all THAs at two tertiary academic centers between 2020 and 2021 was conducted. There were 803 patients and 109 were excluded due to incomplete data. Overall, 694 patients were included, and the mean age and body mass index were 64.50 ± 12.80 years and 28.45 ± 5.90 kg/m
resultsThere were 14 (2%) cases of Tönnis 1 OA, 260 (37.5%) Tönnis 2, and 420 (60.5%) Tönnis 3. Pre-operative OHS was similar between groups (18 ± 6.26, n = 14 in Tönnis 1, 21.19 ± 8.27, n = 260 in Tönnis 2 and 18.18 ± 7.09, n = 420 in Tönnis 3, p = 0.14). Multivariate regression models showed that Tönnis 3 patients had the highest 1-year OHS scores, independent of other variables. The increase in OHS was 18.03 ± 11.95, 18.32 ± 10.96, and 24.32 ± 9.98, respectively for Tönnis 1,2, and 3 (p < 0.001). One year EQ-5D-5 L was also highest in Tönnis 3 (47.5 ± 4.03, 79.6 ± 13.25 and 82.12 ± 11.67, p < 0.001).
conclusionThe highest-grade OA before THA was correlated with the greatest improvements in hip function and quality of life. This study demonstrates that a conservative approach and re-education should be attempted in patients who have an absence of advanced radiographic OA.
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