Table 2 Difference between the desired prosthesis alignment and alignment after first cut; number of re-cuts needed to obtain the correct angle

Frontal femoral component angle [fFC angle (°)]

1.04

SD ±0.89

Range 0–3

# Re-cuts 2

1.20

SD ±0.87

Range 0–3

# Re-cuts 2

1.32

SD ±0.95

Range 0–3

# Re-cuts 3

Femoral slope [FS angle (°)]

0.52

SD ±0.77

Range 0–3

# Re-cuts 1

0.76

SD ±0.78

Range 0–3

# Re-cuts 1

1.04

SD ±0.98

Range 0–3

# Re-cuts 2

Frontal tibial component angle [fTC angle (°)]

0.80

SD ±0.91

Range 0–3

# Re-cuts 1

0.96

SD ±1.31

Range 0–5

# Re-cuts 4

1.28

SD ±1.28

Range 0–4

# Re-cuts 5

Tibial slope [TS angle (°)]

0.72

SD ±0.79

Range 0–2

# Re-cuts 0

0.88

SD ±0.83

Range 0–3

# Re-cuts 1

1.08

SD ±1.04

Range 0–3

# Re-cuts 3