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Measurements
Ischiofemoral
space - smallest distance between the lateral
cortex of the ischial tuberosity and medial cortex
of the lesser trochanter on axial images
Quadratus femoris space - smallest
space for passage of the quadratus femoris muscle
bordered by the superolateral surface of the hamstring
tendons and the posteromedial surface of
lesser trochanter on axial
images
Inclination angle (femoral neck-shaft angle) - the
angle between the long axis of the femoral neck
and the long axis of the femoral shaft on coronal
images
Ischial angle - angle between the ischium and line drawn between the posterior aspect of the ischial tuberosities
Intertuberous distance
- largest distance between inner aspects of the bilateral
ischial tuberosities where the hamstring tendons insert
completely to the ischial tuberosities
Quadratus femoris edema score - Grade 0 (none) - intensity is normal; Grade 1 (mild) - focal edema in the region where the
narrowest IFS and QFS values were measured; Grade 2 (moderate) - diffuse edema extending outside the narrowest point of IFS and QFS but within the muscle; Grade 3 (severe) - edema extending to surrounding soft tissues
Other variables
Age
Sex
Weight
Height