- Derived from C5,6,7,8, T1
- Largest branch of brachial plexus & arises from the posterior cord of brachial plexus.
- In the lower part of axilla, the third part of the axillary artery is related anterior to the radial Nerve.
- The lower lateral cutaneous nerve of the arm supplies the skin covering the lower half of the deltoid and upper part of the long head of the triceps.
- Ulnar collateral branch of the radial nerve accompany the ulnar nerve in tha arm Et supplies the medial head of the triceps.
- It lies in spiral groove of humerus.
- Extensor compartment of arm, forearm (skin)
- Anconeus and extensors of forearm. Extension of MCP joint
|BRANCHES OF RADIAL NERVE ABOVE ELBOW|
|Above spiral groove
Triceps [long head]
Posterior cutaneous nerve of arm
|In Spiral groove (sensory):
Posterior cutaneous nerve of forearm
Lower lateral cutaneous nerve of arm
Anconeus [through branch to medial head]
Medial Et lateral heads of triceps
|Between spiral groove a lateral epicondyle:
Extensor carpi radialis longus
Branch below elbow - Posterior interosseous nerve
- Medial Muscular Branch:
- Supplies medial head of the Triceps brachii(lies close to the ulnar nerve so k/a the ulnar collateral nerve).
- Posterior Muscular Branch:
- Supplies the medial and lateral heads of the Triceps brachii and the Anconeus muscles.
- Lateral Muscular Branch:
- The lateral muscular branches supplies Brachioradialis, Extensor carpi radialis longus, and the lateral part of the Brachi
- Radial nerve is Derived from C5,6,7,8, T1
- It is the branch of posterior cord of brachial plexus
- It lies in spiral groove of humerus
- The extensor compartment of arm & forearm is supplied by radial nerve
Don't Forget to Solve all the previous Year Question asked on RADIAL NERVE