The problem in spasticity is abnormally high muscle tone or a constant state of muscle contraction. All the body muscles normally alternate between contraction and relaxation. In states of paralysis, the brain mechanism controlling these alternations is inhibited. Nerves send messages to muscles in a more or less constant fashion, causing undesired muscle contractions, with abnormally high muscle tone. There are numerous treatments for spasticity.
Many drugs are available.
Baclofen is one of the most successful. This, or other medications, must be tried before any surgery is considered. Aside from medication, physical therapy is used to treat spasticity. Furthermore, other operations are available. These can include injections in the spine or limbs, as well as major open back operations to interrupt nerves.