Table 3.

Visual grading of the bone structure relating to the four reference axial planes

Visual grading	Upper femoral plane		Lower femoral plane (*)		Lower femoral plane (†)		Upper tibial plane		Lower tibial plane
	n	%	n	%	n	%	n	%	n	%
G0	108	6.1	490	36.0	1440	100.0	542	15.4	520	16.3
G1	346	19.6	216	15.9	0	0.0	884	25.1	464	14.6
G2	474	26.9	424	31.1	0	0.0	926	26.2	930	29.1
G3	836	47.4	232	17.0	0	0.0	1176	33.3	1278	40.0
Total	1764	100.0	1362	100.0	1440	100.0	3528	100.0	3192	100.0

n, total number of observations (two observations for each of the three operators).

The lower femoral plane was evaluated for both anterior (*) and posterior (†) femoral prosthetic components.