Table 2.

The numbers at each angle in Group A, B, C, and D

	Group A	Group B	Group C	Group D
0° flexion	130 knees	26 knees	1 knee	1 knee
30° flexion	41 knees	52 knees	10 knees	55 knees
60° flexion	49 knees	39 knees	19 knees	51 knees
90° flexion	44 knees	29 knees	18 knees	67 knees