Table of Contents
What muscles are connected to L4 and L5?
There are paired muscles located between the spinous processes of adjacent vertebrae; subdivided into cervical, thoracic, and lumbar muscles. The interspinale muscles are short bands of muscle fibers including the interspinales cervicis, interspinales thoracis, and interspinales lumborum muscles.
What muscles are innervated by L4?
The fourth lumbar spinal nerve (L4) originates from the spinal column from below the lumbar vertebra 4 (L4)….The muscles are:
- quadratus lumborum.
- gluteus medius muscle.
- gluteus minimus muscle.
- tensor fasciae latae.
- obturator externus.
- inferior gemellus.
- quadratus femoris.
- tibialis anterior.
What nerve is affected by L4-L5 herniation?
For example, a typical posterolateral (behind the disc and to the side) lumbar disc herniation at the L4-L5 level often affects the nerve that traverses the L4-L5 level and exits at the L5 level, called the L5 nerve root.
What does the L5 nerve innervate?
Although considerable controversy still exists, previous work in this field suggests that the L5 nerve root supplies tibialis anterior, extensor hallucis longus, extensor digitorum brevis, and the lateral head of gastrocnemius, while the S1 nerve root innervates the medial head of gastrocnemius, soleus, and abductor …
What muscles connect to L5?
The latissimus dorsi attaches from the spinous processes of T7-L5, the posterior sacrum, and the posterior iliac crest (via the thoracolumbar fascia) to the lowest three or four ribs and the inferior angle of the scapula to the medial lip of the bicipital groove of the humerus.
What is the innervated muscle?
When nerves go into muscle fiber, they innervate the muscle fiber. Innervate is to supply nerves to something, but it can also mean to energize. Think of all the energy you have when you get nervous! Sometimes nervousness can even innervate the hairs on your arms, i.e. stimulate them and make them stand up.
Where is lumbosacral?
The spine is composed of 33 interlocking bones called vertebrae. The lumbosacral region of the spine consists of 5 lumbar vertebrae and the sacrum (5 bones joined together).