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DOS Kongressen 2016 ·
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Suspected Impingement Syndrome - prevalence of
radiographic findings – and their relation to Oxford
Shoulder Score
Linda Christie Andrea, Poul Frost, Kate Smidt, John Gelicneck, Torben Bæk
Hansen, Søren Rasmussen Deutch , Susanne Wiulff Svendsen
Arbejdsmedicinsk Klinik, Hospitalsenheden Vest - Herning; Arbejdsmedicinsk
Klinik, Aarhus Universitetshospital; Ortopædkirurgisk Afdeling, Regionshospitalet
Viborg; Radiologisk Afdeling, Aarhus Universitetshospital; Ortopædkirurgisk
Afdeling, Hospitalsenheden Vest - Holstebro; Ortopædkirurgisk Afdeling,
Regionshospitalet Randers; Arbejdsmedicinsk Klinik, Hospitalsenheden Vest -
Herning
Background:
Danish patients suspected of impingement syndrome generally
have radiographs of their shoulder, before their first consultation with a surgeon.
Purpose / Aim of Study:
We aimed to describe the prevalence of radiographic
findings of rotator cuff- calcifications, osteoarthritis of the acromioclavicular
joint, acromial spurs, and a hooked acromion (Bigliani type 3), on standard ra-
diographs. We hypothesized that these findings are associated with shoulder
disability in terms of a low Oxford Shoulder Score (OSS)
Materials and Methods:
We conducted a cross-sectional study of all 1039
patients aged 18-63 years, who were suspected of impingement syndrome
based on the referral letter and who responded a questionnaire, which included
OSS, when seen at one of six orthopaedic departments in Central Denmark
Region during 2011. Radiographs at time of referral were examined by one of
two resident doctors, who were blinded to symptoms and clinical findings. Data
was analyzed with logistic regression, with mutual adjustment for each radio-
graphic finding and for sex and age.
Findings / Results:
Radiographs were available for 853 patients (82.1%)
Mean OSS was 28. The prevalence of radiographic findings was: 25.3% for cal-
cifications, 17. 5% for a hooked acromion, 11.9% for osteoarthritis of the acro-
mioclavicular joint, and 15.1% for spurs. Spurs were associated with a low OSS
(OSS<24) with an adjusted OR of 1.7 (95% CI 1.1-2.6). No association was
seen between any of the other radiographic findings and a low OSS.
Conclusions:
One fourth of all patients referred for orthopaedic evaluation on
suspicion of impingement syndrome had rotator cuff calcifications on radio-
graphs. The calcifications have no significant association with OSS. Spurs were
the only radiographic findings associated with a low OSS.
No conflicts of interest reported
58.