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n.
a sharply localized anterior angulation of the spine, resulting in the appearance of a lump (the deformity of the traditional hunchback). The deformity is due to collapse of the anterior part of a vertebra, usually caused by osteoporosis, a secondary malignant deposit, or tuberculosis.
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ky·phos (kiґfos) [Gr. “a humpâ€] the convex prominence of the spine in kyphosis.Medical dictionary. 2011.