Spinraza is a medicine administered by a doctor who is experienced in giving injections into the lower back. This injection, also known as a lumbar puncture or spinal tap, involves inserting a needle in the space around the spinal cord (intrathecal space). You or your child may be given a medicine to help induce relaxation or sleep (sedation) before being given Spinraza, and an ultrasound or other imaging equipment may be used to guide the insertion of the needle.