Scheuermann described a type of rigid dorsal kyphosis in 1921. Sorensen proposed criteria for its diagnosis.
In the study of Lonner et al, the age range of affected patients was 9 to 27 years.
Main criteria for diagnosis: wedging of a vertebra >= 5° in at least 3 successive vertebrae
Additional findings (variable):
(1) endplate irregularities
(2) Schmorl's nodes
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Specialty: Surgery, orthopedic
