The spine, or backbone, is made up of small bones (vertebrae) stacked -- along with discs -- one on top of another. A healthy spine when viewed from the side has gentle curves to it. The curves help the spine absorb stress from body movement and gravity.
When viewed from the back, the spine should run straight down the middle of the back. When abnormalities of the spine occur, the natural curvatures of the spine are misaligned or exaggerated in certain areas, as occurs with lordosis, kyphosis, and scoliosis.
A toe stuck in an upside-down "V" is probably a hammertoe.
Some symptoms of a hammertoe include:
Putting on a shoe hurts the top of the bent toe.
Corns form on the top of the toe joint.
The toe joint swells and takes on an angry red color.
It's hard to move the toe joint -- and it hurts when you try.
The ball of the foot under the bent toe hurts.
Kyphosis. A condition marked by an abnormally rounded upper back
Discitis. Inflammation of the disc space between the bones of the spine most often caused by infection
Benign (harmless) juvenile lordosis
The following conditions can cause kyphosis:
Abnormal vertebrae development in utero (congenital kyphosis)
Poor posture or slouching (postural kyphosis)
Scheuermann's disease, a condition that causes vertebrae to be misshaped (Scheuermann's kyphosis)
Spina bifida, a birth defect in which the spinal column of the fetus does not close completely during development inside the womb
Doctors do not know what causes the most common type of scoliosis seen in adolescents. However, doctors do know that scoliosis tends to run in families. A disease, injury, infection, or birth defect also may be to blame.