4. The Spiral Line

The Spiral Line

The Spiral Line wraps around the body in two helices, right and left, connecting each side of the skull across the upper back top the opposite shoulder, then around to the front of the ribs to cross again at the navel, attaching at the hips.  From there, the SPL passes along the anterolateral (anterior lateral) thigh and across the shin to the arch of the foot, where it then wraps under the foot and runs up along the posterior lateral side of the leg to the ischium and into the erector spine myofascia, ending just about where it started, back at the occipital ridge of the skull.

Postural function of the SPL is to, like most of the myofascial meridians, maintain balance.  The SPL, however, maintains balance across ALL planes.  It mediates rotations in the body and works to steady the truck and leg to keep it from folding into rotational collapse.

Muscles of the SPL:

Splenius capitis and cervicis

Rhomboids major/minor

Serratus anterior

External oblique

Internal oblique

Tensor fasciae latae

Tibialis anterior

Fibularis longs

Bicep memories

Erector spine

(this picture shows half of the spiral line muscles, just so you can see the spiral pattern from one side)

Connective Tissue (ligmanets, tendons, fascial sheets, etc.) of the SPL:

Abdominal aponeurosis

Linea alba

Iliotibial tract

Sacrotuberous ligament

Sacrolumbar fascia

Bony Landmarks that serve as anchors for the SPL:

Occipital ridge

Mastoid process atlas/axis transverse processes

Lower cervical/Upper thoracic spinous processes

Medial border of the Sapulpa

Lateral ribs

Illiac crest/ASIS

Lateral tibia condyle

1st metatarsal base

Fibular head

Ischial tuberosity


Occipital ridge

Common postural deviations: 

Imbalance between left and right

Twisting of the shoulders or hips

Lateral shifts in the body

Stretches for the SPL:

Seated Twist

Triangle Pose

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Next week, I'll start going over the four arm lines, starting with the Deep Front Arm Line!

Be good to yourselves! :)