The Multifidus Muscles

The Multifidus Muscles

Christine Wiese Anatomy, Torso Leave a Comment

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Exploring the multifidus muscles

Muscles come and go in fashion. For a while, the psoas was often the subject of media attention. Then it was the piriformis. These days the multifidus muscles are in the spotlight, particularly in relationship to back pain. You can read more about research on the relationship between multifidus and back pain HERE. The Multifidus MusclesThe multifidus muscles belong to a group of muscles called the transversospinalis group. Transversospinalis could be broken down into transverse, meaning running across something, and spinalis, which refers to the spine. So this broader group of muscles are all muscles that run from the vertebrae of the spine in the transverse direction. The multifidus muscles are one group of transversospinalis muscles.

What does the name of the multifidus muscles mean?

The name multifidus comes from two Latin words:
  • “multi” meaning many
  • “fidere” meaning to cleave or split into parts
From that you could get a muscle that is split into many parts. The multifidus muscles are actually a group of small muscles along the spine that work together.

Where do the multifidus muscles attach?

The group of multifidus muscles are located along the spine and deep to (underneath) the erector spinae muscles.
Origin
They originate on the posterior sacrum, posterior superior iliac spine, and transverse processes of all vertebrae from the lumbar to C3.
Insertion
Each multifidus muscle runs from its origin to insert 2-4 vertebrae above that on the spinous processes of the lumbar vertebrae through C2.

What actions do the multifidus muscles do?

They function bilaterally to extend the spine. Unilaterally they contribute to side-bending or flexion of the spine to the same side. Unilaterally they also rotate the spine to the opposite side.

Poses where the multifidus muscles contract:

The Multifidus Muscles in Shalabhasana

In shalabhasana, the multifidus muscles contract to extend the spine

Poses where the multifidus muscles are lengthened:

The Multifidus Muscles in Paschimottanasana

The multifidus muscles are lengthened in paschimottanasana and other forward bends.

Learn All of Your Muscles

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