- Evaluate for:
-
lateral talar shift:
-
medial clear space:
-
deltoid injury:
-
fibular shortening;
-
talocrural angle:
-
tibiofibular line:
-
fibular rotation, or lateral displacement;
-
tibiofibular line:
-
syndesmotic integrity (see
radiographs):
-
talar tilt: (stability)
-
osteochondral lesions of talus:
- Discussion:
- fibular length,
talar tilt, talar shift,
talocrural angle, medial
clear space, tibiofibular overlap, &
tibiofibular clear space (interosseous clear space) can
be measured can be measured;
- mortise views as ankle is moved from plantar to dorsiflexion may show these lesions more clearly;
- restoration of ankle mortise requires anatomic reduction of lateral malleolus so that is articular surface is congruous w/ reduced talus;
- Technique:
- obtained w/ the leg internally rotated 15 to 20 deg so that x-ray beam is nearly perpendicular to the intermalleolar line.
