Perichondrial ring is:: (A) Seen around foramen magnum, (B) Seen around epiphyseal plate, (C) More prominent in adults, (D) Shear strength increases with age
Answer is B. The perichondrial ring- surrounds the growth plate circumferentially. Peri-chondrial ring extends towards metaphysis and become continuous with periosteum of metaphysis. With increasing age, perichondrial ring is thinned and its shear resistance (strength) is decreased.