Medial epicondyle of the humerus to second and third metacarpals.
The medial epicondyle of the humerus in humans is larger and more prominent than the lateral epicondyle and is directed slightly more posteriorly in the anatomical position. Wiki
Bases of second and third metacarpal bones.
The third metacarpal bone (metacarpal bone of the middle finger) is a little smaller than the second. The dorsal aspect of its base presents on its radial side a pyramidal eminence, the styloid process, which extends upward behind the capitate; immediately distal to this is a rough surface for the attachment of the extensor carpi radialis brevis muscle. Wiki
Flexion and abduction at wrist.
Innervation – Nerve control
The median nerve is a nerve in humans and other animals in the upper limb. It is one of the five main nerves originating from the brachial plexus.
In human anatomy, the radial artery is the main artery of the lateral aspect of the forearm.
Extensor carpi ulnaris muscle.
The Flexor Carpi Radialis’ antagonist muscles are the Abductor pollicis longus, Flexor digitorum superficialis and profundus, and the Flexor pollicis longus.
Pictures of muscles
Trigger Point Referrals