(1) An ankylosed tooth can force adjacent teeth out of position, which can affect the bite.(2) Ankylosed teeth fail to erupt to meet their counterparts in the opposite jaw.(3) Few reports address the reconstructive challenge of total knee arthroplasty after a surgically fused or ankylosed knee.(4) Removal of an ankylosed tooth may be difficult and traumatic leading to esthetic bony ridge deformities and optimal prosthetic treatment interferences.(5) Undeterred by a permanently ankylosed knee joint, he joined the Malayan medical service.(6) The half-vertebra is, as a rule, ankylosed to adjacent vertebrae.