Which statement best describes the pathogenesis of osteochondrosis?

Which statement best describes the pathogenesis of osteochondrosis?

• A. Traumatic events are a primary, initiating cause
• B. Bacterial infection is the sole cause
• C. Nutritional excess is the only factor
• D. Trauma is an important secondary factor to development of osteochondrosis

Answer: (D)

Osteochondrosis arises when the developing bone in the growth plate experiences a disruption of blood supply, leading to focal necrosis and failure of normal endochondral ossification. This makes the immature bone vulnerable to fragmentation and cartilage–bone separation. Trauma often acts as a precipitating factor by further compromising the delicate blood flow in the growing epiphysis, so it is an important secondary contributor rather than the initiating cause. Infection or nutritional excess are not the primary drivers of this process, which is why those options aren’t the best fit.

Osteochondrosis arises when the developing bone in the growth plate experiences a disruption of blood supply, leading to focal necrosis and failure of normal endochondral ossification. This makes the immature bone vulnerable to fragmentation and cartilage–bone separation. Trauma often acts as a precipitating factor by further compromising the delicate blood flow in the growing epiphysis, so it is an important secondary contributor rather than the initiating cause. Infection or nutritional excess are not the primary drivers of this process, which is why those options aren’t the best fit.