Footprint of the rotator cuff
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The rotator cuff footprint involves the convergence of the four rotator cuff tendons, which form a multi-layered, flat structure with the shape of a horseshoe, when viewed in the glenoidal (parasagittal) plane, consisting of the separate tendon insertions 1, which for themselves show a wide range of lengths and widths 1.
- supraspinatus insertion with a triangular shape at the anteromedial aspect of the superior facet of the greater tubercle 2
- infraspinatus insertion with a trapezoid shape at the posterior aspect of the superior facet and the middle facet of the greater tubercle extending anterolaterally 2
- teres minor insertion at the inferior facet of the greater tubercle
- subscapularis insertion anteriorly and proximally on the lesser tubercle
There is a significant overlapping zone of muscle/tendon units with interweaving fibers, especially between the posterior supraspinatus and anterior infraspinatus tendons 6.