The Effect of Femoral Cutting Guide Design Improvements for Patient-Specific Instruments

Table 2

Intraoperative changes made to the femoral components in 120 PSI.

Femur	Change made	Group I		Group II		Group III
		()		()		()
		Number	Percentage	Number	Percentage	Number	Percentage
Size	Up/down	7	35%	5	10%	0	0%
Resection	Proximal	18	90%	16	32%	1	2%
	Distal	11	55%	9	18%	1	2%
	Varus	3	15%	1	2%	0	0%
	Valgus	1	5%	0	0%	0	0%
4 : 1 block	External rotation	3	15%	2	4%	0	0%
	Internal rotation	3	15%	4	16%	1	2%
	Anterior	2	10%	3	12%	0	0%
	Posterior	1	5%	2	8%	0	0%