natural history

Spinal Cord Concussion

Definition

 

Transient disturbance of spinal cord function

- +/- vertebral column injury

- no pathological changes in spinal cord

 

Mechanism

 

Rapid change in velocity following trauma

- football / ice hockey

 

Associations

 

Congenitally narrow spinal cord

Hypermobility

 

PVNS

Definition

 

Pigmented Villo-Nodular Synovitis

- benign inflammatory process that arises in synovial tissues

- contains significant amounts of hemosiderin

 

Epidemiology

 

Age: 20 - 50

Sex: M > F

 

Types

 

A.  Diffuse

- throughout joint synovium

- more difficult to treat / excise fully

 

Background

Definition

 

CP is a permanent disorder of movement and posture 

- non-progressive 

- brain injury before the age of two years

 

Strict definition excludes familial & progressive congenital problems & those acquired in childhood as a result of head injuries

 

Incidence

 

2-3 per 1000 live births

 

Higher in 

Transient Osteoporosis Hip

Definition

 

Self limiting syndrome of unknown aetiology

- hip pain associated with osteoporosis of proximal femur 

 

DDx

 

AVN

- AVN of the hip in pregnancy is rare but possible

- TOH tends to be diffuse on MRI, while AVN is localised

- extends to neck and metaphysis

- transient osteoporosis has normal bone scan

 

Incidence

 

Rare

- M: F 3:1

Background

Bilateral Hip AVN Xray

 

Definition

 

Non-traumatic or traumatic condition of femoral head with bone death

 

Epidemiology

 

20 - 50 yo (average 38)

- M: F 4:1

 

NHx  

 

70-80% with AVN will progress within 1 year

 

Cubitus Varus

Incidence

 

Occurs 10% of supracondylar humeral fractures

- varus malunion

 

Lateral condyle fracture

- AVN trochlea

 

Elbow Cubitus Varus

 

Growth arrest of medial aspect physis

- rare

- post traumatic

 

Effects

 

Background

DefinitionKnee OCD MRI Cartilage Intact

 

Osteochondritis Dissecans

- separation of avascular fragment of bone & cartilage

 

Epidemiology

 

M : F = 2:1

 

Mean age 18 years

- can present as young as 9

 

4:1000