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