5 lumbar dermatomas (L1-L5) that provide sensation of these spinal nerves in the lower extremity (leg, foot, hip, etc.) – “L” refers to the five lumbar vertebrae, the. T L L L L L S S S L L S L S L L S T- L L L L L L L S S L S S S L Por otro lado, estudios de RMN lumbar realizados por otras causas en individuos dermatomas correspondientes a la raíz afectada del nervio ciático: ciatalgia.

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About The Author Ruby Gill. The latter is the most used.

For example, there dfrmatomas. There are eight cervical nerves, twelve thoracic nerves, five lumbar and five sacral nerves. A similar area innervated by peripheral nerves is called a peripheral nerve field. They are classified as cervical, thoracic, lumbar and sacral. Referred pain usually involves a specific, “referred” location so is not associated with a dermatome. What are other people reading?

Dermatoma: What It Is, Types and Clinical Significance

A dermatome also refers to the part of an embryonic somite. The myotomas, on the other hand, are the ones that innervate the skeletal muscles of the same group of somites. These cover the skin on the inside of the arm, chest, abdomen and the middle back.

Major dermatomes and cutaneous nerves. Along the thorax and abdomen the dermatomes are like a stack of discs forming a human, each supplied by a different spinal nerve. The 31 segments of the spine on each side give rise to 31 spinal nerves, which are composed of 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coxigeal spinal nerves.


Each of these nerves allows us to feel the temperature, the touch, the pressure, and even the pain. Anatomical terminology [ edit on Wikidata ]. Each person may have slight variations in the limits of the dermatomes.

Dermatomas Lumbares: Radiculitis Química

The rash of shingles is usually limited to a specific dermatome such as the chest, leg or arm. Thus, each half of each limb has a different dermatome.

This dermatome would dermaomas sensitivity to the skin of the shoulder, parts of the arm and index and ring fingers. Archived lumbaree the original PDF on The pain increases when we put ourselves in positions where the roots of the nerves are stretched.

Retrieved from ” https: All nerves, except the first cervical nerve C1are connected with a dermatome. However, the symptoms may not dermatomae across the entire dermatome.

Each dermatome is classified limbares to the spinal nerve that innervates it. However, it is important to mention that dermatomas have been discovered in recent years by clinical observations and are only a guide. Following is a list of spinal nerves and points that are characteristically belonging to the dermatome of each nerve: We use cookies to provide our online service.


The somites are structures formed at the sides of the neural tube during the fourth week of human development. The vertebral column has more than 30 distinct vertebrae that divide according to their location, starting from the neck to the coccyx.

Dermatome (anatomy)

We have 29 dermatomes in the human body. You will walk with a pin or a fork on both sides of the body until you reach the normal sensation. That is, the seventh cervical nerve would innervate the C7 dermatome. These nerves are related to each other, since they originated from the same groups Somites During embryonic development. The dermatomes are organized as a pile of discs in the part of the thorax and the abdomen, being supplied each disc by a different spinal nerve.

In other projects Wikimedia Commons. The main ones are viral diseases, radiculopathy and spinal cord injuries.