Table 1.

Hip offset radiographic measurements

Measurement (mm)	Preoperative discrepancy	Postoperative change
Hip rad	1.5 ± 5.6* (range, −11.7 to 21.4)	1.4 ± 6.4 (range, −12.7 to 15.3)
Hip nav troch		0.1 ± 5.1 (range, −11 to 13)
Hip nav femur+		−0.7 + 7.9 (range, −24 to 17)

mm = millimeters; hip rad = hip radiographs; hip nav troch = hip navigation by trochanteric screw; hip nav femur = hip navigation by distal femoral pins with array;

* = target change in offset to be obtained at surgery; ⁺ = no statistical difference between the two measurements by navigation.