Deep muscles of the back. (Multifidus shaded in red.)
Sacrum, dorsal surface. (Multifidus attachment outlined in red.)
|Provides proprioceptive feedback and input due to high muscle spindle density; Bilateral backward extension, unilateral side-bending to the ipsilateral side and rotation to the contralateral side|
|Musculus multifidus spinae|
The multifidus (multifidus spinae : pl. multifidi ) muscle consists of a number of fleshy and tendinous
Located just superficially to the spine itself, the multifidus muscle spans three joint segments and works to stabilize these joints at each level.
The stiffness and stability makes each
These fasciculi arise:
Each fasciculus, passing obliquely upward and medially, is inserted into the whole length of the
These fasciculi vary in length: the most superficial, the longest, pass from one vertebra to the third or fourth above; those next in order run from one vertebra to the second or third above; while the deepest connect two adjacent vertebrae.
Dysfunction in the lumbar multifidus muscles is strongly associated with