The lesser tubercle of the

humerus The humerus (; ) is a long bone in the arm that runs from the shoulder to the elbow. It connects the scapula and the two bones of the lower arm, the radius and ulna, and consists of three sections. The humeral upper extremity consists of a roun ...

, although smaller, is more prominent than the

greater tubercle The greater tubercle of the humerus is the outward part the upper end of that bone, adjacent to the large rounded prominence of the humerus head. It provides attachment points for the supraspinatus, infraspinatus, and teres minor muscles, thre ...

: it is situated in front, and is directed medially and anteriorly. The projection of the lesser tubercle is anterior from the junction that is found between the anatomical neck and the shaft of the humerus and easily identified due to the

intertubercular sulcus The bicipital groove (intertubercular groove, sulcus intertubercularis) is a deep groove on the humerus that separates the greater tubercle from the lesser tubercle. It allows for the long tendon of the biceps brachii muscle to pass. Structure ...

(Bicipital groove). Lesser-Tubercle-of-Right-Humerus

Above and in front it presents an impression for the insertion of the tendon of the

subscapularis The subscapularis is a large triangular muscle which fills the subscapular fossa and inserts into the lesser tubercle of the humerus and the front of the capsule of the shoulder-joint. Structure It arises from its medial two-thirds and Som ...

Additional images

File:Gray326.png, The left shoulder and acromioclavicular joints, and the proper ligaments of the scapula. File:Human arm bones diagram.svg, Human arm bones diagram

References

External links

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Diagram at uwlax.edu
Bones of the upper limb Humerus {{musculoskeletal-stub