yes
The lumbar puncture must be done below the level of the spinal cord termination (conus medullaris), which is typically at the L1-L2 vertebral level in adults. Placing the needle below this point reduces the risk of spinal cord injury.
Paraplegia - (paralysis of the lower extremities) is cuased by severe injury to the spinal cord in the thoracic or lumbar region, resulting in loss of sensory and motor control below the level of the injury.
The spinal cord ends at the level of the first lumbar vertebra, which is just below the level of the ribs.
Lumbar Vertebra 3
A needle is inserted, usually between L4 and L5 (the fourth and fifth lumbar vertebrae), into the epidural space (below the level of the spinal cord), withdrawing spinal fluid for diagnostic purposes.
There will be a complete loss of movement and sensation below the level of spinal cord injury.
The spinal cord ends between the 1st and 2nd vertebrae.
Not much information here in context to efficiently answer the question but I will try. The spinal cord generally ends (terminates) around the L1 vertebral level in the lumbar spinal column give or take a level or so in normal humans. After this, small spinal nerves continue down in a sac and exit the lumbar and sacral spine to innervate the pelvis and lower extremities.
4th cervical vertebrae
They are numbered by the level on spinal cord: 8 cervical, 12 thoracic, 5 lumbar, 5 sacral and 1 coccygeal.
The arachnoid mata is not the site of a lumbar puncture. The site of a lumbar puncture is between the level of L4 and L5 vertebra in the lumbar section of the spine. This is used because at this point and below, there is no spinal cord to damage. The LP draws a liquid known as cerebrospinal fluid (CSF) from the meninges surrounding the spinal cord in order to examine for infection risk mainly.
Yes, an incomplete spinal injury means there is movement or sensation preserved below the level of injury. This can be as little movement as moving a toe, to full movement, including walking.