What is C7 Myotome?

What is C7 Myotome?

If the patient is unconscious, myotomes can be tested with tendon reflexes instead: C6 – tendon of the biceps brachii muscle in the cubital fossa. C7 – tendon of the triceps brachii muscle posterior to the elbow.

What does Myotomal weakness mean?

During myotome testing, the clinician is looking for muscle weakness of a particular group of muscles. Results may indicate lesion to the spinal cord nerve root, or intervertebral disc herniation pressing on the spinal nerve roots.

What muscles are innervated by C7 nerve root?

C7 helps control the triceps (the large muscle on the back of the arm that straightens the elbow) and wrist extensor muscles. The C7 dermatome goes down the back of the arm and into the middle finger.

Where can I find C7?

3. Palpate the spine to determine the spinous processes of C7 and mark this point. C7 can be identified by palpating the base of the occiput down into the deep hollow where the next bony prominence felt will be C2, then C3-5 are closely packed and the spine of C6 is very prominent.

Are Dermatomes motor or sensory?

A dermatome is an area of skin in which sensory nerves derive from a single spinal nerve root (see the following image).