TABLE A1.

Changes of the AMA When Derotation of the Distal Femur Is Performed, Described as the Pillar-Crane Model^{14 a}

Antetorsion	25°	30°	30°	35°	35°	40°	40°	40°	45°	45°	45°
Derotation	10°	10°	15°	15°	20°	20°	25°	30°	20°	25°	30°
AMA
3.0°	0.2	0.3	0.3	0.4	0.5	0.7	0.8	0.9	0.8	1.0	1.1
3.5°			0.4	0.5	0.6	0.8	0.9	1.0	1.0	1.1	1.3
4.0°	0.3	0.3	0.5	0.6	0.7	0.9	1.0	1.1	1.1	1.3	1.5
4.5°			0.5	0.7	0.8	1.0	1.2	1.3	1.3	1.5	1.6
5.0°	0.3	0.4	0.6	0.7	0.9	1.1	1.3	1.4	1.4	1.6	1.8
5.5°			0.6	0.8	1.0	1.2	1.4	1.6	1.5	1.8	2.0
6.0°	0.4	0.5	0.7	0.9	1.1	1.3	1.5	1.7	1.7	2.0	2.2
6.5°			0.7	0.9	1.2	1.5	1.7	1.8	1.8	2.1	2.3
7.0°	0.5	0.6	0.8	1.0	1.2	1.6	1.8	2.0	1.9	2.3	2.5
7.5°			0.9	1.1	1.3	1.7	1.9	2.1	2.1	2.4	2.7

^aAll values are in degrees. Changes of the anatomic mechanical angle (AMA) indicate varus increase.