Assertion: scoliosis's surgery | /r/HasProperty | required in severe cases
Facets:
Source sentences:
text: In severe cases surgery may be required.
text: In severe cases surgery may be needed to correct the curvature of the spine and is done when the bones of the patient have stopped growing.
text: In severe cases, surgery may be required.
text: In severe cases, surgery may be required if more conservative treatments fail.