ArticleThe Eurasian journal of medicine2026
Ultrasonography and the Reorientation of Developmental Hip Dysplasia Research: An NLP-NMF Trend Analysis (1980-2024).
Article in The Eurasian journal of medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundGraf's introduction of hip ultrasonography (US) in the 1980s coincided with a major change in developmental hip dysplasia (DDH) screening and diagnostic practice, with a gradual reduction in reliance on examination- and radiograph-only strategies.
methodsA natural language processing pipeline and non-negative matrix factorization (NLP-NMF) were applied to Scopus-indexed DDH publications, extracting topics and weights across 4 epochs (pre-1980, 1980-1984, 1985-1989, 1980-2024) anchored to the 1980 US milestone. Topic co-occurrence networks, weight distributions, and segmented regression summarized thematic shifts and tested for a 1980 breakpoint.
resultsIn the post-1980 corpus, a distinct diagnostic imaging theme emerged and strengthened, while surgery declined and anatomy remained influential. In 1985-1989, joint anatomy dominated (39.1%), followed by diagnosis (18.6%), pediatric orthopedics (15.3%), surgery (13.7%), and conservative treatment (13.4%). Across 1980-2024, clinical evaluation accounted for 31.5% of publications, followed by anatomy (19.6%), genetic anomaly (16.7%), diagnostic imaging (16.6%), and surgery (15.6%). Within diagnostic imaging, US carried a high weight (0.948), underscoring its central role. Segmented regression identified a structural breakpoint around 1980, temporally coincident with the period in which hip US entered clinical practice and diffused across the field.
conclusionThe NLP-NMF analysis of 4 decades of DDH literature shows a sustained pivot toward imagingsupported,n clinically anchored evaluation and growing attention to etiologic and syndromic/anomaly contexts alongside anatomical determinants, with potential implications for earlier detection, risk-aligned follow-up, and more targeted use of operative management. Cite this article as: Taşkin R, Yılar S, Budak İ, Uğur F. Ultrasonography and the reorientation of developmental hip dysplasia research: an NLP-NMF trend analysis (1980-2024). Eurasian J Med. 2026, 58 (2), 1249, doi:10.5152/eurasianjmed.2026.251249.
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