Article

The Constant-Murley score (CS) has been used for more than 25 years
to assess shoulder function. Strength by itself accounts for 25% of the total
score. The measurement at 90 degrees abduction seems to be sometimes limited by
pain, particularly with tendinopathy or subacromial impingement. We compared the
assessment of isometric strength in anterior forward flexion and abduction and
its effect on pain and total CS. METHODS: Strength was assessed by CS at both 90
degrees forward flexion and abduction in the scapular plane by using an Isobex
dynamometer, the first position tested being randomized. Pain was assessed on a
100-mm visual analog scale (VAS) and total CS was assessed. RESULTS: We included
54 patients with unilateral shoulder problems; 50% had rotator cuff injury. Mean
strength on the affected side was 4.7+/-2.5kg in forward flexion and 4.6+/-2.8kg
in abduction. Induced pain and total CS did not differ between the 2 positions
tested. CONCLUSIONS: Strength can be measured by the CS in forward flexion or
abduction, because the measurement does not affect strength, pain intensity or
total score. The choice of direction for measurement should be based on the
underlying pathology, related contraindications and patient preference.
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Langue : ANGLAIS