Lumbar spine

The lumbar spine consists of the five lumbar vertebrae and carries the trunk and the head. Read more about the lumbar spine!

Lumbar spine

The lumbar spine is the portion of the spine that begins just below the thoracic spine and ends at the sacrum. This area of ​​the spine is particularly heavily loaded - the body weight weighs on the upright passage of the man on it. Read everything important about the lumbar spine!

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lumbar spine

  • What is the lumbar spine?

  • What is the function of the lumbar spine?

  • Where is the lumbar spine located?

  • What problems can the lumbar spine cause?

What is the lumbar spine?

The lumbar spine refers to all vertebrae that lie between the thoracic spine and the sacrum - there are five in number. The lumbar spine has - like the cervical spine - a physiological curvature forward (lordosis).

The five lumbar vertebrae are built stronger than the vertebrae of the remaining spine. They are tall and wide with a transverse oval large vertebral body. The synovial processes of the lumbar vertebrae are also very strong, since the lumbar spine must indeed support the entire trunk and head.

Between the lumbar vertebrae are - as in the entire spine - intervertebral discs (intervertebral discs) and ligaments.

The transverse processes, which depart laterally from the lumbar vertebrae, are ridge rudiments, which become longer from the first to the third lumbar vertebrae and then gradually shorter until the fifth lumbar vertebra.

Lumbar puncture and lumbar anesthesia

The spinous processes of the lumbar vertebrae are clearly surmounted by the back muscles, are very strong, flattened and stand horizontally. As a result, the access to the spinal canal from the back between the individual lumbar vertebrae is quite far - further than in the thoracic spine. It is thus possible to puncture the spinal cord between the third and fourth lumbar vertebrae with a long needle (lumbar puncture) and to remove cerebrospinal fluid, for instance to diagnose illnesses.

Lumbal anesthesia, which paralyzes the lower part of the spinal cord and makes the entire lower half of the body insensitive to pain, is also performed in this area.

"Ponytail" (Cauda equina)

The spinal cord only extends to the first or second lumbar vertebra. Underneath, the spinal cord is just a nerve fiber bundle made up of the anterior and posterior spinal nerve roots of the lumbar and sacral marrow - the cauda equina.

What is the function of the lumbar spine?

The lumbar spine carries the weight of the trunk and head. It also ensures mobility of the spine. Prevention of the body occurs especially through a transverse axis in the lumbar spine (and cervical spine). A sideways tilt is approximately equally possible in the cervical and lumbar spine.

Lumbar lordosis - together with the neck lordosis and the thoracic kyphosis - ensures that the center of gravity of the body is above the feet, thus enabling an upright gait (lordosis = curvature towards the abdomen, kyphosis = curvature in the opposite direction, ie towards the back),

Where is the lumbar spine located?

The lumbar spine connects to the thoracic spine and extends to the sacrum. The appendages of the individual vertebrae lie close together under the skin of the back, where you can see and touch them in very slim people between the back muscles.

What problems can the lumbar spine cause?

Congenital or acquired changes of the (lumbar) spine can affect their stability and function. For example, in the so-called scoliosis, the spine is curved laterally. In addition, individual vertebrae are twisted about their longitudinal axis.

In some people, the number of vertebrae varies. For example, the last lumbar vertebra may be fused with the first sacral vertebra (sacralization).

Individual vertebrae may be blocked in their mobility, for example by muscle cramps.

As lumbar spine syndrome (LWS syndrome) are all complaints associated with the lumbar spine column: sciatic or disc syndrome and Lumbago:

Sciatic syndrome refers to a root stimulus syndrome with spontaneous and stretchy pain, caused by a prolapse or protrusion of the spinal disc (prolapse). Lumbago is the technical term for a lumbago. He is characterized by stinging pain and a movement barrier in the lumbar region. A lumbago can become chronic.

Kauda syndrome refers to damage to the cauda equina caused by an accident, herniated disc or tumors. The injury causes a flaccid paralysis of the legs without missing reflexes and sensibility disturbances.

Apart from degenerative changes, injuries can also be the cause of a herniated lumbar disc herniation.

In babies with weak muscles, it may lead to a lifting of the physiological lordosis of the lumbar spine come - it develops a Sitzkyphose (curvature in the back seated).


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