Resting zone b. Proliferating zone c. Hypertrophied zone d. Provisional calcification zone 2. Calcifaction occurs at hypertrophied zone 3.OCD occurs in this region Pathophysiology of OCD I. Focal failure of endochondral ossification a.
Cartilage is retained and physis increases in width b.
These areas are weak c. Molecular and biochemical causes of OCD a. Abnormal proteoglycan core protein formation b. II collagen c. Metaphyseal lesions a.