osteoid osteoma

Benign Bone Tumours

1. Giant cell tumour

 

Often present with a painful swollen area, lytic on X-ray

- calcaneus > talus

- rare in skeletally immature

- curettage and grafting

- local recurrence ~50 %

- may need to bone graft defects

 

2. Osteochondromas

 

Can occur in foot and ankle

- single or multiple

- simple excision at base

- malignant transformation very rare in foot

 

Subungal exostosis 

Osteoid Osteoma

Definition

 

Benign, bone-forming neoplasm

- characterized by a small nidus of neoplastic tissue

- surrounded by a wide zone of mature, reactive bone

 

Epidemiology

 

10% of benign bone tumours

Age 5-25

M:F 2:1

 

Aetiology

 

Unknown

- thought may be glomus tumour of bone

 

Pain secondary to prostaglandin production

 

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