Scheuermann's Disease
This type of kyphosis
is most commonly seen in boys and may become noticeable during
adolescence. The kyphosis
is related to abnormal development of the vertebrae
in the spine (usually the upper back, thoracic
spine) which leads to wedge-shaped, instead of rectangular-shaped
vertebral
bodies. Additionally, there can be abnormal development of the
intervertebral
discs leading to herniations into the adjacent vertebrae
(uncommonly into the spinal
canal). When this occurs, the vertebral endplate becomes irregular
and this is often referred to as a Schmorl's node. Although the
wedging of vertebrae
in Scheuermann's is most commonly in the thoracic
spine, it may occur in the junction between the thoracic and
lumbar
spines, or purely in the lumbar
spine.
The treatment of Scheuermann's disease depends upon the degree
of kyphosis,
the age of the patient and the levels of the spine which are affected.
Early diagnosis is key in optimally treating this type of kyphosis.
In a skeletally immature patients (still growing) treatment for
significant deformity is directed at bracing. A custom brace is
made and worn by the patient 23 hours a day during remaining growth
(until skeletal maturity) in order to assist remodeling and corrected
growth of the spine. Once an adolescent has stopped growing, or
in older adults, bracing is no longer an effective option in correcting
abnormal curvature. Treatment at that point is directed toward
symptoms such as pain, fatigue, weakness and possible neurologic
problems due to spinal stenosis or disc
herniations. In mild cases physical therapy, strengthening exercises,
pain modalities and medication/bracing may help.
A gradual progression of kyphosis
may be noted in Scheuermann's despite bracing in an adolescent.
In an adult the symptoms of a significant kyphosis
may also become increasing disabling. When bracing, therapy and
other non-operative treatments fail, surgery may be an option
to consider. Each case must be approached in a very individual
manner and a complete and thorough evaluation by an experienced
specialist is important prior to planning any treatment program.
If surgery is considered, the goals must include correction of
deformity, and obtaining a balanced and stable spine. Numerous
techniques have been developed to treat severe kyphosis,
and new approaches such as endoscopic surgery appear promising.
Frequently
Asked Questions
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Figure 1
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