What 3 muscles make up the erector spinae?
The erector spinae muscle is a group of muscles that includes the iliocostalis, longissimus, and spinalis muscles.
What are the attachments of the erector spinae muscles?
Attachments. Several texts state that the erector spinae muscles have a single, common insertion point of a large broad tendon on the back of the sacrum, the inner side of the iliac crest, sacroiliac ligaments, and lumbosacral spinous processes 2-5.
What is the function of M erector spinae?
The erector spinae muscles lie on each side of the vertebral column and extend alongside the lumbar, thoracic, and cervical sections of the spine. The erector spinae muscles function to straighten the back and provide for side-to-side rotation. An injury or strain to these muscles may cause back spasms and pain.
What causes pain in erector spinae?
An Erector spinae injury occurs when the muscles and connective tissues of the lower back become overused or stretched beyond their normal range of movement. Erector spinae pain can occasionally occur at the time of the injury, whilst playing a sport, perhaps a slip or trip.
How many muscles are in the erector spinae?
three
The erector spinae muscles include three main muscles which themselves can also be divided into sections. The erector spinae muscles include: iliocostalis, longissimus, and spinalis. Each of these muscles can be divided into three sections.
What are the 2 actions of the erector spinae group?
The function of the spinal erectors is to move the vertebral column. Bilateral contraction of these muscles extends the spine, while unilateral contraction causes lateral flexion (ipsilateral). They also help to maintain posture by steadying the spine on the pelvis during walking.
What is the insertion of the erector spinae?
Erector spinae muscles
| Erector spinae | |
|---|---|
| Origin | Spinous processes of T9-T12 thoracic vertebrae, medial slope of the dorsal segment of iliac crest |
| Insertion | spinous processes of T1 and T2 thoracic vertebrae and the cervical vertebrae |
| Artery | lateral sacral artery |
| Nerve | posterior branch of spinal nerve |
What is the innervation for the erector spinae muscles?
The erector spinae muscles are innervated by the dorsal rami of the first cervical nerve (C1) through the fifth lumbar nerve (L5). The dorsal rami are the nerves that form the back divisions of the spinal nerves.
What is the origin of the spinalis?
The spinalis is the body’s most medial, or closest to the midline of the body, deep back muscle and originates at the spinous processes (bony projections at the back of each vertebra) of the lower spinal vertebrae.
How do you treat erector spinae pain?
Final Word on Erector Spinae Muscles & Back Pain While many people find relief from over the counter medications, the best long-term solutions are stretching, exercise, and physical treatments such as physical therapy or chiropractic care.