Content » Vol 29, Issue 3

Original report

Reduced mobility in the cervico-thoracic motion segment--a risk factor for musculoskeletal neck-shoulder pain: a two-year prospective follow-up study

S Norlander, B A Gustavsson, J Lindell, B Nordgren
Research Foundation for Working Environment in the Swedish Construction Industry, Stockholm.
DOI: 10.2340/16501977199729167174


The aim of this study was to evaluate the variations in C7-T1 mobility in order to decide whether inverse C7-T1 function, defined as equal or less mobility in motion segment C7-T1 compared with T1-T2, could be used for prediction of neck-shoulder pain (NSP). One hundred and sixty-one female laundry workers participated in a prospective two-year follow-up study which included a self-report questionnaire and clinical examinations. The present study showed that the incidence of inverse C7-T1 function was 33% per year and subjects classified as having an inverse C7-T1 function three or more times during the follow-up period had an elevated risk of NSP (RR 3. 1, CI 95% 1. 1-6. 9). According to the authors' interpretation, lack of synchronous mobility distribution between adjacent motion segments might be a provoking factor. Inverse C7-T1 function predicts NSP related to the cervico-thoracic articulations and yields a positive predictive value of 84%. Assessments must be repeated, however.

Lay Abstract


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