The lumbar plexus is a network of nerves formed by the anterior rami of the spinal nerves of segments L1 to L3. It also contains contributions from the spinal nerves Th12 and L4. Together with the sacral plexus, the lumbar plexus forms the nerves of the pelvis and lower limbs. Together, they are also referred to as the lumbosacral plexus.
Anatomy
The main branches of the lumbar plexus are:
