Clean FRCS notes with inline figures
Radial head dislocation
| Type / group | Definition / note |
|---|---|
| X | ray elbow showing posterior dislocation of radial head |
•Radial head convex, long radial neck with hypoplasia of capitellum. Valgus deformity
•No # seen in proximal ulna
•No bony exostosis along forearm
•No synostosis
•Radiologically congenital dislocation of radial head
•Also check/perform check XR of whole forearm for bowing and exostosis + contralateral side (60% bilateral)
•Would like to correlate with clinical clues
•Trauma (missed monteggia)
•Bilateral
•Paralytic disease (CP, polio)
•Congenital abnormalities
•Achondroplasia
•Arthrogryposis
•Larsen syndrome
•Nail patella syndrome
•HME
•RU synostosis
•Ulnar club hand
•Symptoms
•Cubital valgus
Any forearm bowing?
•Prominence over radial head
•Decreased range depending on direction of dislocation + limited supination
•Rx: Excise when mature if symptomatic
