This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pediatric Ohopedics, Subject name: Orthopaedics
Perichondrial ring is: 
Select and explain. 
A. Seen around foramen magnum, B. Seen around epiphyseal plate, C. More prominent in adults, D. Shear strength increases with age
B: Seen around epiphyseal plate
Answer: B: Seen around epiphyseal plate 
Explanation: 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.