All the statements are true about exotosis, EXCEPT:: (A) Growth continues after skeletal maturity, (B) It is covered by cailaginous cap, (C) Malignant transformation may occur, (D) A veically transmitted disorder
Answer is A. Exotosis or osteochondroma is the commonest benign "tumour" of the bone. It is not a true neoplasm since its growth stops with cessation of growth at the epiphyseal plate. It is a result of an aberration at the growth plate, where a few cells from the plate grow centrifugally as a separate lump of bone. Ref: Apley's System of Ohopedics and Fractures, 8th Edition, Page 178; Essential Ohopaedics By J. Maheshwari, 2012, Page 240 and 3rd Edition, Page 225.