Orthonotes
Orthonotes
by the.bonestories
v3.0 Fusion
v3.0 Fusion
general topic hub

Osteochondritis Dissecans (OCD)

Focal subchondral bone necrosis leading to cartilage instability. Common site: lateral aspect of medial femoral condyle. Clinical: pain, swelling, catching, locking in adolescents. Imaging: X-ray shows lucency; MRI defines stability of fragment. Treatment: stable juvenile lesions—activity modification; unstable/adult—drilling, fixation, grafting.

Overview

Topic summary

View wiki
Focal subchondral bone necrosis leading to cartilage instability. Common site: lateral aspect of medial femoral condyle. Clinical: pain, swelling, catching, locking in adolescents. Imaging: X-ray shows lucency; MRI defines stability of fragment. Treatment: stable juvenile lesions—activity modification; unstable/adult—drilling, fixation, grafting.
Cases

Clinical case discussions

Browse all cases
MCQs

High-yield practice questions

Start topic quiz
Question 1

What is the most common site for osteochondritis dissecans in the knee?

Question 2

Which imaging modality is best for assessing the stability of an osteochondritis dissecans lesion?

Question 3

In the context of osteochondritis dissecans, what does a high T2 signal completely surrounding the fragment indicate?

Question 4

What is the treatment for a stable juvenile osteochondritis dissecans lesion?

Question 5

Which age group is associated with a better prognosis for healing in osteochondritis dissecans?

Question 6

What is the most common clinical symptom of osteochondritis dissecans in adolescents?

Question 7

What MRI feature indicates that an osteochondritis dissecans lesion is stable?

Question 8

Which of the following is NOT a common site for osteochondritis dissecans?

Question 9

What is the primary aetiological factor believed to contribute to the development of osteochondritis dissecans?

Question 10

What surgical treatment is indicated for a Grade IV osteochondritis dissecans lesion?