Osteoblastoma
Epidemiology
Uncommon
< 1% Primary bone tumour
Young boys
- second decade
Location
Similar to OO
Spine 30%
- especially posterior elements
Long bones 35%
Clinical
Back or limb pain
- pain less severe than OO
radiofrequency ablation
Morton's Neuroma
Definition
Benign enlargement of the common digital branch
- usually 3rd webspace
Anatomy
Found at level of or just distal to MT heads
- deep to the deep transverse MT ligament
Epidemiology
Classically women between 40 and 60
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
Chondroblastoma
Definition
Rare cartilage tumour
Epidemiology
1% of bone tumours / rare
- typically in adolescents
NHx
Usually benign
- but aggressive / frankly malignant behaviour reported
- locally aggressive
- can have pulmonary metastasis
Location