Babies with this type of SMA have decreased muscle and trunk tone, resulting in floppiness of the limbs and weak arm and leg movements.
Caring for a child with SMA can be very challenging and emotionally draining.
Children with SMA type II may eventually be able to sit, but they are unable to learn to stand or to walk.
Children with SMA type III begin to experience symptoms between the ages of two and 17 years.
I used two male-male couplers here plus a short length of semi rigid coax to reach the bulkhead mounted SMA output socket.
In general, when a family has already had a child with SMA, each subsequent pregnancy has a 25 percent chance of producing another child with SMA.
Parents must then decide whether to use the information to help them prepare for the arrival of a baby with SMA or to terminate the pregnancy.
Parents of children with SMA usually carry the gene for the disease but have no symptoms themselves.
Symptoms of SMA type II are usually noted in a child between three and 15 months of age.
There are several different types of SMA with varying severity; see the website below for more details.
These include SMA type I, also called Werdnig-Hoffmann; SMA type II; SMA type III, also called Kugelberg-Welander disease; Kennedy syndrome, or progressive spinobulbar muscular atrophy; and congenital SMA with arthrogryposis.