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Using conventional content analysis, we determined the features experts cited when grading dystonia severity. Then, using open\u2010source pose estimation techniques, we determined gait variable analogs of these expert\u2010cited features correlating with their assessments of dystonia severity.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Experts assessed videos from 116 participants (46 with dystonia aged 15\u2009years [SD 3] and 70 without dystonia aged 15\u2009years [SD 2], both groups ranging 10\u201320\u2009years old and 50% male). Variable limb adduction was most commonly cited by experts when identifying dystonia, comprising 60% of expert statements. Effect on gait (regularity, stability, trajectory, speed) and dystonia amplitude were common features experts used to determine dystonia severity, comprising 19% and 13% of statements respectively. Gait variables assessing adduction variability and amplitude (inter\u2010ankle distance variance and foot adduction amplitude) were significantly correlated with expert assessment of dystonia severity (multiple linear regression, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Interpretation<\/jats:title><jats:p>Adduction variability and amplitude are quantifiable gait features that correlate with expert\u2010determined gait dystonia severity in individuals with CP. Consideration of these features could help optimize and standardize the clinical assessment of gait dystonia severity in individuals with CP.<\/jats:p><\/jats:sec>","DOI":"10.1111\/dmcn.15524","type":"journal-article","created":{"date-parts":[[2023,1,26]],"date-time":"2023-01-26T17:38:38Z","timestamp":1674754718000},"page":"968-977","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Determinants of gait dystonia severity in cerebral palsy"],"prefix":"10.1111","volume":"65","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0205-2149","authenticated-orcid":false,"given":"Bhooma R.","family":"Aravamuthan","sequence":"first","affiliation":[{"name":"Division of Pediatric Neurology, Department of Neurology Washington University School of Medicine  St Louis MO USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Toni S.","family":"Pearson","sequence":"additional","affiliation":[{"name":"Division of 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