Kyphosis
Alternative names
Scheuermann disease; Roundback
Definition
A curving of the spine that
causes a bowing of the back, such that the apex
of the angle points backwards leading to a hunchback
or slouching posture.
Causes
and risks
Kyphosis is a spinal deformity that can result
from trauma, developmental problems or degenerative
disease. Kyphosis can occur at any age although
it is rare at birth.
Adolescent kyphosis, also known as Scheuermann’s
disease, results from wedging of several consecutive
vertebrae. The cause of Scheuermann’s disease
is unknown.
In adults kyphosis can be seen as a result
of osteoportic compression fractures, degenerative
disease (like arthritis), or spondylolisthese
(slipping of one vertebra forward on another).
Other causes of kyphosis include infection
(such as tuberculosis), spina bifida (congenital
deformity with incomplete formation of part
of the spine), disk degeneration, endocrine
diseases, Paget’s disease, polio, and tumors.
Kyphosis can also be seen in association with
scoliosis (an abnormal sideways curvature of
the spine seen in children and adolescents).
Risk factors are related to the causes.
Prevention
Treating and preventing osteoporosis can prevent
many cases of kyphosis in the elderly. Early
diagnosis and bracing of Scheuermann’s disease
can reduce the need for surgery, but there is
no way to prevent the disease.
Symptoms
- mild back pain
- fatigue
- tenderness and stiffness in the spine
- round back appearance
Signs
and tests
Physical examination confirms the abnormal
curvature of the spine. The exam should also
look for any neurologic changes (weakness or
changes in sensation) below the level of the
curve.
A spine X-ray will be done to document the
severity of the curve and allow serial measurements
to be performed.
If there is any question of a tumor, infection
or neurologic symptoms then an MRI may be ordered.
Treatment
Treatment depends on the cause of the disorder:
Congenital kyphosis requires corrective surgery
at an early age.
Sheuermann’s disease is initially treated with
a brace and physical therapy. Occasionally surgery
is needed for large (greater than 60 degrees),
painful curves.
Multiple compression fractures from osteoporosis
can be left alone if there is no neurologic
deficit or pain, but the osteoporosis needs
to be treated to help prevent future fractures.
For debilitating deformity or pain surgery is
an option.
Kyphosis secondary to infection or tumor needs
to be treated more aggressively, often with
surgery and medications.
Treatment for other types of kyphosis includes
identifying the cause of the kyphosis. Surgery
may be indicated if neurological symptoms occur.
Prognosis
Adolescents with Scheuermann’s disease tend
do well even if they need surgery, and the disease
stops once they stop growing. If the kyphosis
is due to degenerative joint disease or multiple
compression fractures, correction of the defect
is not possible without surgery and improvement
of pain is less reliable.