[The anterior concavity in the curvature of the lumbar and cervical spine as viewed from the side. The term usually refers to abnormally increased curvature (hollow back, saddle back, swayback). It does not include lordosis as normal mating posture in certain animals ( = POSTURE + SEX BEHAVIOR, ANIMAL). ( MSH )]
UMLS (CSP) C0024003 Relation/PAR: Deficiency Diseases
Curvature of spine