The transverse humeral ligament is a broad band passing from the lesser to the greater tubercle of the humerus, and always limited to that portion of the bone which lies above the epiphysial line

Epiphyseal plate

The epiphyseal plate is a hyaline cartilage plate in the metaphysis at each end of a long bone...

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It converts the intertubercular groove

Intertubercular groove

The tubercles of the humerus are separated from each other by a deep groove, the intertubercular groove , which lodges the long tendon of the Biceps brachii and transmits a branch of the anterior humeral circumflex artery to the shoulder-joint.It runs obliquely downward, and ends near the junction...

 into a canal, and is the homologue of the strong process of bone which connects the summits of the two tubercles in the musk ox

Musk Ox

The muskox is an Arctic mammal of the family Bovidae, noted for its thick coat and for the strong odor emitted by males, from which its name derives. This musky odor is used to attract females during mating season...

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Eponym: Gordon Brodie's ligament.