What nerve Innervates the supinator?
Innervation. It is innervated by the deep branch of the radial nerve. The deep branch then becomes the posterior interosseous nerve upon exiting the supinator muscle.
What does posterior interosseous innervate?
The posterior interosseous nerve is a motor nerve and sequentially innervates supinator, extensor carpi radialis brevis, extensor digitorum communis, extensor digiti minimi, extensor carpi ulnaris, abductor pollicis, extensor pollicis brevis, extensor pollicis longus, and extensor indicis.
What muscles are innervated by the musculocutaneous nerve?
The musculocutaneous nerve innervates the three muscles of the anterior compartment of the arm: the coracobrachialis, biceps brachii, and brachialis. It is also responsible for cutaneous innervation of the lateral forearm.
Is the supinator and extensor?
Supinator is a spiral muscle contained in the posterior compartment of the forearm, along with brachioradialis, and the superficial and deep forearm extensors. Supinator muscle curls around the proximal part of radius, connecting it with the ulna.
Is supination concentric or eccentric?
Standing: Stabilisation in the standing position is not normally required as this is the most functional position….Non Dominant.
| Non Dominant | ||
|---|---|---|
| 120/sec | 5.5 | 5 |
| 180/sec | 5 | 8 |
Which is the origin of the Supinator?
Origin. The supinator muscle has a broad origin from the ulna and humerus. The two layers of fibres originate in common from the supinator crest of the ulna, the lateral epicondyle of the humerus, the radial collateral ligament and the annular radial ligament.
What is the insertion of the Supinator?
Supinator
| Origin | Lateral epicondyle of humerus, radial collateral and annular ligaments, supinator fossa and crest of ulna |
|---|---|
| Insertion | Lateral, posterior and anterior surfaces of proximal 1/3 of radius |
| Action | Supinates forearm (i.e., rotates radius to turn palm anteriorly) |
What is the origin of the supinator?
What Innervates radial nerve?
The radial nerve is a nerve in the human body that supplies the posterior portion of the upper limb. It innervates the medial and lateral heads of the triceps brachii muscle of the arm, as well as all 12 muscles in the posterior osteofascial compartment of the forearm and the associated joints and overlying skin.
Which muscles are innervated by the suprascapular nerve?
The suprascapular nerve branches provide efferent innervation to the supraspinatus and infraspinatus muscles as well as sensory innervation to the shoulder joint.