Most common nerve to be damaged in dislocation of shoulder is :
**Core Concept**
The question is testing the knowledge of the anatomy of the shoulder and the nerves that are at risk during a dislocation. The shoulder joint is a ball-and-socket joint that contains several nerves, including the axillary nerve, which is responsible for motor and sensory function.
**Why the Correct Answer is Right**
The axillary nerve is the most common nerve to be damaged in a shoulder dislocation due to its anatomical location. It arises from the posterior cord of the brachial plexus and wraps around the neck of the humerus, making it susceptible to injury during a dislocation. The axillary nerve innervates the deltoid muscle and the teres minor muscle, and it also provides sensory innervation to the skin over the deltoid region.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because the suprascapular nerve is not typically damaged in a shoulder dislocation. It innervates the supraspinatus and infraspinatus muscles and is more commonly injured in rotator cuff tears.
* **Option B:** This option is incorrect because the musculocutaneous nerve is not at risk during a shoulder dislocation. It arises from the lateral cord of the brachial plexus and innervates the biceps brachii, brachialis, and coracobrachialis muscles.
* **Option C:** This option is incorrect because the radial nerve is not typically damaged in a shoulder dislocation. It arises from the posterior cord of the brachial plexus and innervates the extensor muscles of the wrist and fingers.
**Clinical Pearl / High-Yield Fact**
In a patient with a shoulder dislocation, it's essential to assess for axillary nerve function by testing deltoid muscle strength and sensation over the deltoid region.
**Correct Answer:** . **Axillary nerve**