Epidemiology
Rare condition
Aetiology
Theories
1. Failure of fusion of 2 ossification centres of clavicle
2. Pressure from subclavian artery
Clinical Features
Painless swelling over mid clavicle
- almost always on Right side
- presents soon after birth
X-ray
Bulbous ends overlying each other
DDx
Birth fracture of clavicle
- painful
- history of traumatic delivery
- callus on Xray
Cleidocranial Dysostosis
- abnormality of intramembranous ossification
- bilateral
- associated facial / jaw & pelvic bone abnormality
- no palpable lump
NHx
Painless
- no functional problem
Management
Indications
Cosmetic issue from lump
Surgical options
1. Excision of prominent lateral end of sternal part
2. Bone graft & internal fixation