Advertisement for orthosearch.org.uk
Results 1 - 1 of 1
Results per page:
Applied filters
The Bone & Joint Journal

Include Proceedings
Dates
Year From

Year To
The Journal of Bone & Joint Surgery British Volume
Vol. 75-B, Issue 1 | Pages 137 - 140
1 Jan 1993
Keating J Waterworth P Shaw-Dunn J Crossan J

We studied five cadaver shoulders to determine the strength relationship of the four rotator cuff muscles. The mean fibre length and volume of each muscle were measured, from which the physiological cross-sectional area was calculated. This value was used to estimate the force which each muscle was capable of generating. The lever arm of each muscle about the humeral head was then measured and the moment exerted was calculated. The strength ratios between the muscles were more or less constant in the five specimens. Subscapularis was the most powerful muscle and contributed 53% of the cuff moment; supraspinatus contributed 14%, infraspinatus 22% and teres minor 10%. The force-generating capacity of the subscapularis was equal to that of the other three muscles combined.