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What is the medical term for dermatome?

What is the medical term for dermatome?

A dermatome is the area of sensory nerves near the skin that are supplied by a specific spinal nerve root. The body can be divided into regions that are mainly supplied by a single spinal nerve.

How are dermatomes named?

Your dermatomes are numbered based on which spinal nerve they correspond to. Below, we’ll outline each dermatome and the area of the body that it’s associated with. Remember that the exact area that a dermatome may cover can vary by individual. Some overlap is also possible.

Where do dermatomes come from?

Dermatomes are derived from the outer portion of an embryo from which the skin and subcutaneous tissues are developed and become the areas of skin supplied by the branches of a single dorsal root ganglion.

Who discovered dermatomes?

In this chapter, the history of the discovery of dermatomes is explored. In 1893, William Thorburn, a surgical registrar in the Manchester Royal Infirmary, after observing patients with spinal cord lesions published detailed maps of the lumbar and sacral dermatomes (▶ Fig. 20.1).

What dermatome is the knee?

L2
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Nerve Root Dermatomes
Cervical
Lumbar
L1 Back, over trochanter and groin
L2 Back, front of thigh to knee

Where are the Dermatomes located?

the spinal cord
Dermatomes are located in the spinal cord. Myotomes is a group of single spinal nerves that originate from a groups of muscles.

What is dermatome and myotome?

A group of muscles that is innervated by the motor fibers that stem from a specific nerve root is called a myotome. An area of the skin that is innervated by the sensory fibers that stem from a specific nerve root is called a dermatome.

What is dermatome map?

Dermatome maps show the sensory distribution of each dermatome across the body. Clinicians can use test touch with a dermatome map as a way to localise lesions, damage, injury to specific spinal nerves, and to determine the extent of the injury, for example, if a patient is experiencing numbness in only one area.

What dermatome is the hip?

5 lumbar dermatomes (L1-L5) that supply sensation from these spinal nerves in the lower limb (leg, foot, hip, etc.) – “L” refers to the five lumbar vertebrae, the disks below them, and the corresponding area of the lower back.

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