Search results
Results from the WOW.Com Content Network
The brachioradialis is a superficial, fusiform muscle on the lateral side of the forearm. It originates proximally on the lateral supracondylar ridge of the humerus. It inserts distally on the radius, at the base of its styloid process. [3] Near the elbow, it forms the lateral limit of the cubital fossa, or elbow pit. [4]
The brachioradialis, flexor of the elbow, is unusual in that it is located in the posterior compartment, but it is actually a muscle of flexor / anterior compartment of the forearm. The anconeus , assisting in extension of the elbow joint, is by some considered part of the posterior compartment of the arm.
It originates from the anterior aspect of the distal humerus; [1] it inserts onto the tuberosity of the ulna. It is innervated by the musculocutaneous nerve, [2] and commonly also receives additional innervation from the radial nerve. [3] The brachialis is the prime mover of elbow flexion generating about 50% more power than the biceps.
The mobile wad (or mobile wad of Henry) is a group of the following three muscles found in the lateral compartment of the forearm: [1]. brachioradialis; extensor carpi radialis brevis
The lateral supracondylar ridge is a prominent, rough margin on the lower part of the lateral border of the humerus.It presents an anterior lip for the origin of forearm extensors, including the brachioradialis muscle above, and the extensor carpi radialis longus muscle below. [1]
The biceps flexes the lower arm. The brachioradialis, in the forearm, and brachialis, located deep to the biceps in the upper arm, are both synergists that aid in this motion. Synergist muscles also called fixators, act around a joint to help the action of an agonist muscle.
It extends obliquely downward into a strong, conical projection. The tendon of the brachioradialis attaches at its base. [2] The radial collateral ligament of the wrist attaches at its apex. The lateral surface is marked by a flat groove for the tendons of the abductor pollicis longus and extensor pollicis brevis.
Beneath the neck of the radius, on the medial side, is an eminence, the radial tuberosity; its surface is divided into: . a posterior, rough portion, for the insertion of the tendon of the biceps brachii.