- Osteonecrosis of capitellum
- Repetitive valgus stress
- Little leaguer’s elbow
– Medial epicondyle apophysitis
– Panner disease : <12 y/o
– Osteochondritis dissecans (OCD) >12 y/o - 5-10 y/o
- Boy > Girl
- Mild pain, stiffness, limitation of motion
- Fissure, sclerosis, condensation, fragmentation of capitellum, hypertrophy of radial head
- Sequelae (-) : regeneration, normalization
- DDX
- Osteochondritis dissecans : >12 y/o (after fusion of growth plate)
sclerosis and bony fragmentation of left capitellum
also seen in MRI
