Understanding
An area of subchondral bone is weakened; the osteochondral fragment may remain in place or become unstable. Pain on exertion, swelling, or locking may reveal the lesion.
The Assessment
X-rays and MRI evaluate the location, size, stability, and remaining growth. The treatment of children and adults differs.
Treatments
A stable lesion in a growing child can heal with activity adjustments and weight-bearing protection, depending on the assessment. An unstable or persistent lesion may require surgery: drilling, fragment fixation, or reconstruction, depending on the situation.
Follow-up
Clinical and radiological checkups guide the return to activity. A reduction in pain is not sufficient to authorize impact before healing.
Your questions.
Is it the same as osteoarthritis?+
No. This is a localized lesion of the bone and cartilage; its progression can nevertheless compromise the joint.