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The Constant score and the assessment of scapula dyskinesis: Proposal and assessment of an integrated outcome measure

Journal of Electromyography and Kinesiology, ISSN: 1050-6411, Vol: 29, Page: 81-89
2016
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Article Description

The Constant–Murley score (CMS) is a popular measure of shoulder function. However, its ability to monitor the evolution of patients during rehabilitation after rotator-cuff repair is controversial. Moreover, CMS does not account for possible alterations in the scapulo-humeral coordination (SHC, scapula dyskinesis), which are apparent in variety of shoulder pathologies. To address these issues, a new formulation of CMS was firstly proposed, which rates the “affected-to-controlateral side difference in SHC” of a patient with respect to reference values of asymptomatic controls (Scapula-Weighted CMS). Then, 32 patients (53 ± 9 year-old) were evaluated with CMS and SW-CMS at 45, 70, 90-day and >6-month after rotator-cuff repair, to test three hypotheses: (1) CMS and SW-CMS are largely responsive to change; (2) accounting (SW-CMS) or not (CMS) for scapula dyskinesis leads to statistically different scores and SW-CMS cannot be predicted from CMS without clinically relevant differences; (3) 90% of patients recover a side-to-side SHC similar to asymptomatic controls at 90 days. Results supported hypotheses 1 and 2. On the contrary (hypothesis 3), only 10% of patients recovered for SHC alterations at 90 days, and 50% at follow-up. These findings support the use of SW-CMS and the importance of treating scapula dyskinesis after rotator-cuff repair.

Bibliographic Details

Cutti, Andrea Giovanni; Parel, Ilaria; Pellegrini, Andrea; Paladini, Paolo; Sacchetti, Rinaldo; Porcellini, Giuseppe; Merolla, Giovanni

Elsevier BV

Neuroscience; Biochemistry, Genetics and Molecular Biology; Medicine

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