fusion of bones: the fusion of the bones of a joint, often
as a result of disease or injury, or intentionally through surgery
stiffness of joint bones: stiffness or immobility in a joint
caused by bones fusing together as a result of disease or injury
or arising from surgery to join one bone or part to another
Early 18th century. Via modern Latin, from Greek agkulosis,
'stiffening of the joints', from agkuloun, 'to bend', from
agkulos, 'bent'.
Spondylitis
inflammation of the vertebrae and the attached discs and ligaments
Mid-19th century. Formed from Latin spondylus, 'vertebra',
from Greek spondulos, of unknown origin.
