OCD is usually described as a discreet lesion in the older child/adolescent, while Panner's disease is thought of as a lesion of the entire capitellum in a younger child.
Feldman reported two cases of excision of a Type II (Kocher-Lorenz) capitellum fracture which blocked motion.
On true lateral films, the three arcs of the capitellum
, trochlear sulcus, and medial trochlea will be concentric.
Differentiation from the classic capitellum fracture is essential in both diagnosis and treatment.
2) The pathognomonic lesion of this fracture is extension beyond the capitellum into the trochlear ridge, giving rise to both of the double arcs seen on the lateral radiographs of the elbow (see Fig.
Fractures of the capitellum
are generally classified into two types: smaller, shear fractures (Kocher-Lorenz); and larger, body fractures (Hahn-Steinthal).
Simulated capitellum fractures were created by osteotomies in the coronal plane at the posterior edge of the articular surface and in the sagittal plane at the lateral edge of the trochlea.
The angle was chosen because biomechanical testing has shown that the greatest amount of force transmitted from the radial head to the capitellum occurs between zero and thirty degrees of elbow flexion.
Pressure distribution in the humeroradial joint and force transmission to the capitellum
during rotation of the forearm: effects of the Sauve-Kapandji procedure and incision of the interosseous membrane.
Osteochondritis dissecans of the capitellum
usually affects adolescent athletes between 12 and 16 years old.
Plain radiographs may be normal but in the later stages may show flattening or cysts in the capitellum
Discussion for this course will center on indication and use for: headless screws, radial head plates, radial heads, and capitellum
This results in posterolateral rotatory instability, where the radial head subluxes posteriorly off the capitellum
MRI revealed erosions of the articular surfaces of the radial head and capitellum
and decreased subchondral marrow signal that is isointense to the surrounding muscle (Figure 1).
Four patients sustained concomitant injuries to the same elbow in addition to the terrible triad pattern, including three patients with fracture of the radial neck and one patient with a capitellum