The supraclavicular nerve is a superficial sensory nerve responsible for providing sensation to specific areas of the upper body. It originates from the cervical plexus, a network of nerves in the neck.
Origin and Path
- The supraclavicular nerve stems from the C3 and C4 nerve roots of the superficial cervical plexus.
- It travels superficially, branching out just above the clavicle.
Function
The primary function of the supraclavicular nerve is to provide sensory innervation to the following areas [5, 8]:
- Clavicle: This includes the bone itself and the skin covering it.
- Anteromedial Shoulder: The front and inner portion of the shoulder.
- Proximal Chest: The upper part of the chest, close to the shoulder and collarbone.
Clinical Significance
Understanding the distribution of the supraclavicular nerve is important in several clinical situations:
- Nerve Blocks: This nerve can be targeted for regional anesthesia to reduce pain in the shoulder, clavicle or upper chest.
- Nerve Damage: Injury to the nerve can lead to numbness, tingling, or pain in the areas it innervates. This could be due to surgery, trauma or other issues in the neck area.
- Diagnosis of Pain: The location of sensory changes can help determine whether the supraclavicular nerve is involved in upper body pain or sensory disturbances.
Summary Table
| Feature | Description |
|---|---|
| Origin | C3 and C4 nerve roots of the superficial cervical plexus |
| Type | Superficial sensory nerve |
| Innervation Area | Clavicle, anteromedial shoulder, and proximal chest |
| Clinical Relevance | Nerve blocks, diagnosis of pain, possible nerve damage after trauma or surgery |
In essence, the supraclavicular nerve is a small but significant nerve that plays a role in feeling sensations in the upper torso. Understanding its anatomy and function is crucial for both diagnostic and treatment purposes.
