Functional Anatomy Strona 1 z 1
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Linder Test 2 Functional Anatomy Testing Tape Specification KT Method Confirmation Testing
Functional Anatomy
Iliocostalis Lumborum (Superficial Erector Spinae)
Origin
Common origin from the anterior surface
of a broad tendon attached to the medial
crest of the sacrum, spinous processes of
the lumbar and 11th and 12th thoracic
vertebrae, posterior part of the medial lip
of the iliac crest, supraspinous ligament,
and lateral crests of the sacrum
Insertion
Inferior borders of angles of lower 6 or 7
ribs
Actions
Bilaterally, superficial erector spinae
extend the spine; contract strongly when
coughing and straining; when bending
forward, eccentric action of the erector
spinae increases in proportion to the
flexion to decelerate and control
movement to approximately 45o--beyond
that angle, ligamentous tension increases
to unload the spine; as muscles of
respiration, activity at the end of inhalation
and also during exhalation (only at
maximum ventilation rate)
Unilaterally, iliocostalis and longissimus
laterally flex to the same side and rotate to
the opposite side.
In the case of low back pain, superficial
erector spinae show reduced EMG activity
until the test movement becomes painful;
increased motor unit activity during muscle
spasm to "splint" the injured area
Nerve
Lateral branches of the dorsal primary
division of the spinal nerves
0105-TR-XX Iliocostalis Lumborum (Superficial Erector Spinae) Go
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