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Lordosis (plural: lordoses) is the term used to refer to the normal anterior curvature of the cervical and lumbar spines when viewed from the side (concavity at the posterior aspect of the spine (cf kyphosis). Lordosis cervicis and lordosis lumbalis are the respective Terminologia Anatomica terms.
However lordosis (also known as hyperlordosis) is also used to refer to abnormal inward curvature of the spine, i.e. excessive lordosis.
History and etymology
Lordosis is from the Ancient Greek λορδως lordos meaning 'bent back'.
Historically, terms such as saddle back, hollow back and swayback have been used to describe hyperlordosis.
- 1. William Alexander Newman Dorland. Dorland's Illustrated Medical Dictionary. (2018) ISBN: 9781416023647