Abstract
About 60 cases of one-sided enlargement of the condyloid process with accompanying deformation of the lower jaw were earlier described as arthritis, chondrome, osteochondrome, etc. Later (Rushton, 1945–1946) a disturbance of the growth was recognized as being the cause of this condition, and named hyperplasia.
The authors have described such a case, a 36-year-old woman, who from the age of 15 years experienced slight pain in the region of the left jaw-joint, and a slight hindrance in opening the mouth. In a later phase there was also a considerable enlargement of the condyle developing by degrees, and a deviation of the lower jaw.
The condyle has been resected and the bite corrected with good result. The histological examination showed the presence of a typical growth zone.