Table 4.

Amount of outliers in computer navigation TKAs versus conventional TKAs

Parameter	Computer navigation TKAs (All 52 cases)	Computer navigation TKAs (First 20 cases)	Computer navigation TKAs (subsequent 32 cases)	Conventional TKAs
Postoperative mechanical alignment
Outlier > 3°	29%	45%	19%	25%
Outlier > 5°	10%	20%	3%	12%
Outlier > 7°	6%	15%	0%	0%
Outlier > 10°	0%	0%	0%	0%
Alignment of femoral components
Outlier > 3°	5.7%	10%	3%	5.7%
Outlier > 5°	2%	5%	0%	0%
Outlier > 7°	0%	0%	0%	0%
Outlier > 10°	0%	0%	0%	0%
Alignment of tibial components
Outlier > 3°	13.5%	25%	6%	9.6%
Outlier > 5°	0%	0%	0%	0%
Outlier > 7°	0%	0%	0%	0%
Outlier > 10°	0%	0%	0%	0%