Osteochondrosis most commonly affects which joint?

Osteochondrosis most commonly affects which joint?

• A. Glenohumeral joint
• B. Stifle joint
• C. Hip joint
• D. Elbow joint

Answer: (A)

Osteochondrosis is a developmental disturbance of endochondral ossification in the growing animal, leaving cartilage flaps and subchondral bone defects that can become osteochondritis dissecans. The shoulder joint (glenohumeral joint) is the most commonly affected site because it bears substantial load and undergoes complex, high-magnitude motion with shear forces during growth. This combination makes the humeral head and surrounding cartilage particularly susceptible to focal cartilage–bone separation, leading to lesions more frequently than in other joints. While other joints like the elbow, stifle, or hip can be involved, the shoulder shows the highest incidence of osteochondral lesions in many species, which is why it is identified as the most common site.

Osteochondrosis is a developmental disturbance of endochondral ossification in the growing animal, leaving cartilage flaps and subchondral bone defects that can become osteochondritis dissecans. The shoulder joint (glenohumeral joint) is the most commonly affected site because it bears substantial load and undergoes complex, high-magnitude motion with shear forces during growth. This combination makes the humeral head and surrounding cartilage particularly susceptible to focal cartilage–bone separation, leading to lesions more frequently than in other joints. While other joints like the elbow, stifle, or hip can be involved, the shoulder shows the highest incidence of osteochondral lesions in many species, which is why it is identified as the most common site.