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Pain referral
Trigger points
Cranial nerve
Spinal nerve
Historical
SPINAL NERVE SEGMENT
PLEXUS
INNERVATION OF MUSCLE & VISCERIA DERMATOME PATTERN
L1
LUMBAR
External Obliques; Internal Obliques; Transverse Abdominis; Cremaster; Rectus
Abdominis; Quadratus Lumborum; Iliopsoas; Iliacus; Ileocecal Valve; Large
Intestine Traverses posteriorly
& inferiorly from L1 to affect the pubic, medial
thigh and groin regions.
L2
LUMBAR
External Obliques; Internal Obliques;
Transverse Abdominis; Cremaster; Rectus Abdominis; Quadratus Lumborum;
Iliacus; Psoas Major & Minor; Sartorius; Rectus Femoris; Vastus Lateralis;
Vastus Intermedius; Vastus Medialis; Adductor Longus & Brevis; Pectineus;
Gracilis; Female Reproductive System; Appendix Traverses posteriorly
from L2 above the buttocks inferiorly down the lateral aspect of the
mid-thigh at which time it traverses anteriorly & inferiorly to the medial
aspect of the mid-thigh.
L3
LUMBAR
Transverse Abdominis; Cremaster; Rectus
Abdominis; Quadratus Lumborum; Iliacus; Psoas Major & Minor; Sartorius;
Rectus Femoris; Vastus Lateralis; Vastus Intermedius; Vastus Medialis;
Pectineus; Adductor Longus & Brevis; Adductor magnus; Gracilis; Obturator
Externus; Urinary Bladder; Female & Male Reproductive System Traverses posteriorly
from L3 across the superior aspect of the buttocks & inferiorly down the
lateral & distal aspect of the thigh, at which time it traverses anteriorly
& inferiorly to the medial aspect of the distal thigh at the knee.
L4
LUMBAR-SACRAL
Transverse Abdominis; Cremaster; Rectus
Abdominis; Obturator Externus; Gluteus Maximus, Medius & Minimus; Superior &
Inferior Gemelli; Adductor Brevis; Adductor Magnus; Gracilis; Tensor Fasciae
Latae; Rectus Femoris; Vastus Lateralis; Vastus Intermedius; Vastus
Medialis; Biceps Femoris; Semimembranosus; Semitendinosus; Tibialis
Anterior; Peroneus Tertius; Extensor Digitorum Longus & Brevis; Extensor
Hallucis Longus; Prostate Gland Traverses posteriorly
from L4 through the buttocks and the entire length of the lateral aspect of
the thigh; at which time it traverses anteriorly and slightly inferiorly
beneath the patella to the medial aspect of the leg whereby it traverses
inferiorly through the medial malleolus and into the great toe as well as
the plantar surface of the great toe.
L5
SACRAL
Gluteus Maximus, Medius & Minimus; Tensor
Fasciae Latae; Obturator Internus; Superior & Inferior Gemelli; Rectus
Femoris; Vastus Lateralis; Vastus Intermedius; Vastus Medialis; Biceps
Femoris; Semitendinosus; Semimembranosus; Tibialis Anterior; Extensor
Hallucis Longus; Extensor Digitorum Longus & Brevis; Peroneus Tertius;
Peroneus Longus & Brevis; Gastrocnemius; Soleus; Plantaris; Popliteus;
Flexor Hallucis Longus & Brevis; Flexor Digitorum Longus & Brevis; Tibialis
Posterior; Dorsal Interossei; Plantar Interossei; Perineum Traverses posteriorly
from L5 into the buttocks & inferiorly down the posterior lateral aspect of
the thigh & proximal leg at which time it traverses anteriorly & inferiorly
down the anterior aspect of the leg & medial dorsum of the foot. © Copyright
Spinal nerve supply of the lumbar region