Dominic Stone
The erector spinae are a group of muscles that run vertically on either side of the spine. They are considered a core and paraspinal muscle group, consisting of the spinalis, longissimus, and iliocostalis muscles. The erector spinae muscles play a crucial role in spinal stability, providing support and protection for the vertebral column. They help control movement at individual intervertebral junctions, allowing for fine control over the vertical stability of the spine. These muscles are often overlooked in training, but their strength and flexibility are essential for maintaining a healthy spine and preventing back injuries.
| Characteristics | Values |
|---|---|
| Definition | One of the core and paraspinal muscles, it is a large and superficial muscle that lies just deep to the thoracolumbar fascia |
| Location | On either side of the vertebral column, between the base of the cranium superiorly and pelvis inferiorly |
| Composition | Three groups of muscles: spinalis, longissimus, and iliocostalis |
| Function | Move the vertebral column, maintain posture, and provide spinal stability |
| Innervation | Lateral branches of the posterior rami of the cervical, thoracic, and lumbar spinal nerves |
| Blood Supply | Vertebral, deep cervical, occipital, intercostal, and lumbar arteries |
| Training | Exercises that focus on core stability and controlled contraction are key for strong erector spinae |
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What You'll Learn
- The erector spinae is a large group of back muscles
- It is divided into three sections: spinalis, longissimus and iliocostalis
- The erector spinae muscles are responsible for moving the vertebral column
- They are important for spinal stability and can cause lower back pain
- Exercises can strengthen the erector spinae and reduce back pain
The erector spinae is a large group of back muscles
The spinalis muscles are the most medial of the erector spinae muscles, originating from the spinous processes of the vertebrae and inserting into the occipital bone. They are innervated by the lateral branches of the posterior rami of the cervical, thoracic, and lumbar spinal nerves. The blood supply to the spinalis muscles comes from the vertebral, deep cervical, occipital, intercostal, and lumbar arteries.
The longissimus muscles are the central and thickest muscles of the erector spinae. They are divided into three regional groups: the longissimus capitis, longissimus colli, and longissimus thoracis. These muscles attach to the transverse processes of the vertebrae.
The iliocostalis muscles are the most lateral of the erector spinae muscles. They are also divided into three groups: iliocostalis colli, iliocostalis thoracis, and iliocostalis lumborum. The iliocostalis muscles attach to the ribs and help to extend and laterally flex the spine.
The erector spinae muscles are important for spinal stability and can be targeted through specific back exercises. In individuals with low back pain, the erector spinae muscles may not relax properly, leading to increased activity to stabilize the lumbar spine. This increased activity can put a higher compression load on the vertebral column, potentially increasing the risk of injury. Therefore, it is essential to maintain the health and stability of the erector spinae muscles through appropriate training and exercises that focus on core stability and controlled contraction.
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It is divided into three sections: spinalis, longissimus and iliocostalis
The erector spinae muscles are a group of muscles that run vertically on either side of the spine. They are a large and superficial muscle group that plays an important role in spinal stability and movement. The erector spinae are divided into three sections: spinalis, longissimus, and iliocostalis.
The spinalis muscles are the most medial erector spinae muscles, meaning they are the closest to the midline of the body. They are innervated by the lateral branches of the posterior rami of the cervical, thoracic, and lumbar spinal nerves. The blood supply to the spinalis muscles comes from the vertebral, deep cervical, occipital, intercostal, and lumbar arteries. The function of the spinalis muscles is to extend and laterally flex the cervical and thoracic regions of the spine.
The longissimus muscles are the central erector spinae muscles, and they are also the thickest and longest. Similar to the spinalis muscles, the longissimus muscles are divided into three regional groups, from superior to inferior. These muscles form the main bulk of the erector group and attach along the transverse process of the vertebrae.
The iliocostalis muscles are the most lateral erector spinae muscles, meaning they are the farthest from the midline of the body. They are also innervated by the lateral branches of the posterior rami of the cervical, thoracic, and lumbar spinal nerves. The arterial supply is similar to that of the spinalis muscles, including branches of the occipital, deep cervical, vertebral, intercostal, and lumbar arteries. The function of the iliocostalis muscle is to extend and laterally flex the spine.
The erector spinae muscles as a whole work together to stabilize and move the vertebral column. They help to maintain posture and control movement at individual intervertebral junctions, providing fine control over the vertical stability of the spine.
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The erector spinae muscles are responsible for moving the vertebral column
The erector spinae muscles are a large group of muscles that run vertically on either side of the spine, with fibres extending from the base of the cranium to the pelvis. They are considered core and paraspinal muscles, lying just deep to the thoracolumbar fascia. The erector spinae are responsible for moving the vertebral column, providing stability and control over the spine's movements.
The erector spinae muscles are divided into three groups: spinalis, longissimus, and iliocostalis. These muscles work together to facilitate spinal movements and maintain posture. The spinalis muscles, innervated by the lateral branches of the posterior rami of cervical, thoracic, and lumbar spinal nerves, flex and extend the cervical and thoracic regions of the spine. They are the most medial of the erector spinae muscles and are divided into three regional groups.
The longissimus muscles are the central and thickest muscles within the erector spinae group. They are divided into three regional groups as well, running from superior to inferior along the spine. The longissimus muscles play a crucial role in providing structural support and facilitating movement in the cervical and thoracic regions.
The iliocostalis muscles are the most lateral muscles of the erector spinae. They are also divided into three groups, attaching to the ribs and vertebrae. The function of the iliocostalis is to extend and laterally flex the spine. The erector spinae muscles, as a whole, work in conjunction with other muscle groups to provide dynamic stability to the vertebral column, allowing for a wide range of spinal movements and postural adjustments.
The erector spinae muscles are often overlooked, but they serve as the first line of protection for spinal stability. Their paired and segmental nature allows them to control movement at individual intervertebral junctions, providing fine control over the vertical stability of the vertebral column. Furthermore, these muscles provide a rich source of sensory feedback, which is essential for the subconscious control of postural alignment.
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They are important for spinal stability and can cause lower back pain
The erector spinae muscles are a group of muscles that extend on either side of the vertebral column, from the base of the cranium to the pelvis. They are one of the core and paraspinal muscles, and are divided into three groups: spinalis, longissimus, and iliocostalis. The longissimus muscles are the central back erectors and are the thickest and longest layer. The spinalis muscles are innervated by the lateral branches of the posterior rami of the cervical, thoracic, and lumbar spinal nerves. The iliocostalis muscles are the most lateral and are divided into three groups based on their attachments and location.
The erector spinae muscles play a crucial role in spinal stability. They help to move the vertebral column, with bilateral contraction extending the spine and unilateral contraction causing lateral flexion. These muscles also aid in maintaining posture by steadying the spine on the pelvis during walking. In individuals with low back pain, the erector spinae flexion-relaxation phenomenon is absent. This is due to decreased activity and atrophy of the multifidus muscle, which normally acts to stabilize the lumbar spine. To compensate for the lack of stability, the erector spinae muscles increase in activity, leading to increased compression load on the vertebral column. This continuous stimulation of nociceptors in the spinal structures may increase the risk of injury and cause lower back pain.
Lumbar stabilization exercises can help restore the erector spinae flexion-relaxation phenomenon and reduce low back pain. Myofascial release of the erector spinae muscles has been shown to normalize the flexion-relaxation response and decrease non-specific chronic low back pain. Additionally, strengthening the erector spinae muscles through exercises and improving posture can help alleviate back pain and discomfort in the chest, neck, hips, and legs.
Overall, the erector spinae muscles are vital for spinal stability, and their weakening or improper functioning can contribute to lower back pain.
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Exercises can strengthen the erector spinae and reduce back pain
The erector spinae are a group of muscles that run vertically along the spine, connecting each vertebra. They are a large, superficial muscle group that lies deep to the thoracolumbar fascia and arise from the erector spinae aponeurosis (ESA). The erector spinae muscles play a crucial role in spinal stability and movement, allowing the spine to extend, flex, and rotate. Weak erector spinae muscles can lead to poor posture and back pain.
To strengthen the erector spinae and reduce back pain, various exercises can be performed. One such exercise is the seated dumbbell good morning:
- Sit on the edge of a bench.
- Hold a pair of dumbbells between the thighs.
- Lean forward and lower the dumbbells to the floor.
- Maintain a flat back and raise back up.
- Perform 3-4 sets of 10-12 repetitions.
Another effective exercise is the standing barbell good morning:
- Stand with feet shoulder-width apart.
- Place a barbell across the shoulders with a wide grip.
- Lean forward, keeping the back straight.
- Push the hips back and raise back up.
- Repeat for 3-4 sets of 10-12 repetitions.
Planks are also beneficial for strengthening the erector spinae:
- Place the hands or elbows on a mat.
- Step back with the feet and lift the body into a straight line.
- Hold for 15-20 seconds.
- Repeat 3-4 times.
Additionally, the cat-cow yoga pose can be practised:
- Start in a tabletop pose.
- Lower the stomach and look up, arching the back.
- Reverse the movement by lowering the head and arching the back to the sky.
- Repeat for 5-20 repetitions.
Furthermore, Jefferson curls can be performed:
- Stand on a workout box with hands held forward like a diver.
- Roll forward, dropping the head until you feel a stretch.
- Slowly roll back up and squeeze the glutes.
- Perform 5 repetitions.
Finally, supermans are an excellent exercise for the erector spinae:
- Lie on the stomach with the arms reaching forward.
- Lift the chest off the ground and engage the back muscles.
- Hold for 5 seconds and lower down.
- Repeat 10 times, adding a leg lift for a challenge.
By incorporating these exercises into a regular routine, individuals can strengthen their erector spinae muscles, improve spinal stability, and reduce back pain.
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Frequently asked questions
Erector muscles, or erector spinae, are a large group of muscles that run vertically on either side of the spine. They are the most superficial muscles of the posterior trunk.
The erector spinae muscles help to extend and stabilise the vertebral column and craniocervical region. They also help to maintain posture by steadying the spine on the pelvis during walking.
The erector spinae muscles are divided into three groups: spinalis, longissimus, and iliocostalis.
