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Hammersmith Functional Motor Scale and Motor Function Measure-20 in non ambulant SMA patients

Lookup NU author(s): Dr Michelle Eagle, Emerita Professor Katherine Bushby


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The aim of this prospective longitudinal multi centric study was to evaluate the correlation between the Hammersmith Functional Motor Scale and the 20 item version of the Motor Function Measure in non ambulant SMA children and adults at baseline and over a 12 month period. Seventy-four non-ambulant patients performed both measures at baseline and 49 also had an assessment 12 month later. At baseline the scores ranged between 0 and 40 on the Hammersmith Motor function Scale and between 3 and 45 on the Motor Function Measure 20. The correlation between the two scales was 0.733. The 12 month changes ranged between 11 and 4 for the Hammersmith and between 11 and 7 for the Motor Function Measure 20. The correlation between changes was 0.48. Our results suggest that both scales provide useful information although they appeared to work differently at the two extremes of the spectrum of abilities. The Hammersmith Motor Function Scale appeared to be more suitable in strong non ambulant patients, while the Motor Function Measures appeared to be more sensitive to capture activities and possible changes in the very weak patients, including more items capturing axial and upper limb activities. The choice of these measures in clinical trials should therefore depend on inclusion criteria and magnitude of expected changes. (C) 2014 Published by Elsevier B.V.

Publication metadata

Author(s): Mazzone E, De Sanctis R, Fanelli L, Bianco F, Main M, van den Hauwe M, Ash M, de Vries R, Mata JF, Schaefer K, D'Amico A, Colia G, Palermo C, Scoto M, Mayhew A, Eagle M, Servais L, Vigo M, Febrer A, Korinthenberg R, Jeukens M, de Viesser M, Totoescu A, Voit T, Bushby K, Muntoni F, Goemans N, Bertini E, Pane M, Mercuri E

Publication type: Article

Publication status: Published

Journal: Neuromuscular Disorders

Year: 2014

Volume: 24

Issue: 4

Pages: 347-352

Print publication date: 01/04/2014

Online publication date: 16/01/2014

Acceptance date: 06/01/2014

ISSN (print): 0960-8966

ISSN (electronic): 1873-2364

Publisher: Elsevier


DOI: 10.1016/j.nmd.2014.01.003


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