The piriformis nerve, also known as the nerve to piriformis, is the peripheral nerve that innervates the
piriformis muscle.
Structure
The piriformis nerve to piriformis originates from the ventral rami of S1 and S2 in the
sacral plexus
In human anatomy, the sacral plexus is a nerve plexus which provides motor and sensory nerves for the posterior thigh, most of the lower leg and foot, and part of the pelvis. It is part of the lumbosacral plexus and emerges from the lumbar vertebr ...
.
It enters the anterior surface of the
piriformis muscle. This nerve may be double. This nerve is not to be confused with the
inferior gluteal nerve, which also arises from posterior divisions of the first and second sacral ventral rami (L5, S1, S2).
Function
The piriformis nerve
innervates the
piriformis muscle.
See also
*
Piriformis
*
Sacral plexus
In human anatomy, the sacral plexus is a nerve plexus which provides motor and sensory nerves for the posterior thigh, most of the lower leg and foot, and part of the pelvis. It is part of the lumbosacral plexus and emerges from the lumbar vertebr ...
References
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Nerves of the lower limb and lower torso
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