Acta Neurologica Belgica, 2026 (SCI-Expanded, Scopus)
Background: Impaired manual dexterity is common and is related to trunk control and disease severity in neurological diseases. Although cervical dystonia (CD) affects different parts of the body remote from the cervical region, the manual dexterity performance has not been comprehensively examined for people with CD (PwCD). Aims: The primary aim of this study was to compare manual dexterity between PwCD and healthy people. The secondary aim was to determine the relationship between manual dexterity and trunk control, and disease severity for PwCD. Methods: This cross-sectional study included 64 PwCD and 64 healthy people. Manual dexterity was evaluated with the nine-hole peg test (NHPT). Trunk control was assessed with the trunk impairment scale (TIS). Disease severity and dystonia severity were measured with the Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS) and TWSTRS severity subscale, respectively. Results: PwCD showed higher completion times on the NHPT for the dominant and non-dominant hand than healthy people (p < 0.001 and p < 0.001, respectively). For PwCD, the NHPT had moderate correlations with the TIS, TWSTRS, and TWSTRS severity subscale for the dominant hand (p < 0.05 for all), while it had fair to moderate correlations with the TIS, TWSTRS, and TWSTRS severity subscale for the non-dominant hand (p < 0.05 for all). Conclusions: Manual dexterity was impaired and was also associated with trunk control, disease severity, and dystonia severity in CD. The assessment of manual dexterity should be added in the clinical management of PwCD.