incurvature

An unusual excurvature or incurvature of the spine.

Curvature -- N. curvature, curvity†, curvation†; incurvature†, incurvity†; incurvation†; bend; flexure, flexion, flection†; conflexure†; crook, hook, bought, bending; deflection, deflexion†; inflection, inflexion†; concameration†; arcuation†, devexity†, turn, deviation, detour, sweep; curl, curling; bough; recurvity†, recurvation†; sinuosity &c.

An unusual excurvature or incurvature of the spine.