CT scan

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

 

Navicular fractures

Types

 

1.  Dorsal lip fracture / Tuberosity fracture

- avulsion fractures

- most common

- beware avulsion T post

 

2.  Body fracture

 

3.  Stress Fractures

 

Body Fractures

 

Types

 

A.  Transverse fracture in coronal plane

B.  Transverse from dorsolateral to plantarmedial

C.  Central or lateral comminution

 

Cervical Spondylosis

Definitions

 

Cervical spondylosis

- chronic disc degeneration & associated facet arthropathy

 

Cervical myelopathy

- spinal cord dysfunction

- secondary to extrinsic compression of cord or its vascular supply

 

Cervical radiculopathy

- sclerotomal distribution of motor &/or sensory symptoms or signs

- due to compression of nerve root