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Table 1 Radiographic parameters and corresponding definitions

From: The assessment of femoral shaft morphology in the sagittal plane in Chinese patients with osteoarthritis—a radiographic analysis

Radiographic parameters

Definition

sFBA

The angle between the midlines drawn in the proximal and distal quarter segments in the sagittal plane

DACSMA

The angle between femoral distal anterior cortex axis and sagittal mechanical axis

DACSDAA

The angle between distal anterior cortex axis and sagittal distal anatomic axis

SMADAA

The angle between sagittal distal anatomic axis and sagittal mechanical axis

cFBA

The angle between the midlines drawn in the proximal and distal quarter segments of the femoral shaft in the coronal plane

Valgus angle

The angle between femoral coronal mechanical axis and coronal distal anatomic axis

HKA

The angle between femoral coronal mechanical axis and tibial coronal mechanical axis

LF

The distance between two horizontal lines covering the entire femur

Femoral offset

The vertical distance from the center of femoral head to the midline drawn in the proximal quarter of femoral shaft

FNS

The angle between the two midlines drawn in the proximal quarter of femoral shaft and the femoral neck

mLDFA

The lateral angle between femoral coronal mechanical axis and the knee line, the distal femur articular surface