Davos Courses

Executive Editor: Chris Colton

Authors: Florian Gebhard, Phil Kregor, Chris Oliver

Distal femur

back to skeleton

Glossary

Supine position knee flexed 30°

General considerations

The supine position with the knee flexed 30° provides good support for the knee and relaxes the tendency of the gastrocnemius muscle to pull the condyles into hyperextension. It has the disadvantage that, for lateral image intensifier use, the limb may need to be lifted up.


enlarge

Positioning

Position the patient supine on a radiolucent table with the knee in 30° flexion. The knee is supported by a cushion, or rolled sheets.

It is useful to have a small sandbag just behind the same buttock to prevent external rotation of the limb.


enlarge

Carbon triangle

Alternatively, a carbon triangle may be used.

v1.0 2008-12-03