This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, 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 of La Croix also surrounds the growth plate circumferentially, similar to perichondrial groove. Perichondrial 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.