cristal study

DVT PE

Natural History

 

Insall 1984 / no prophylaxis

- DVT 70 - 80%

- asymptomatic PE  8 -17%

- symptomatic PE  0.5 -3%

- death  0.2%

- most commonly in calf / 85-90% below trifurcation

 

THR

- THR only 10-15% below trifurcation

 

Bilateral DVT in 10-15%

 

Prophylaxis

 

Mechanical prophylaxis

- TEDS