Table 1.

Number and size of particles in different situations.

Situation No.	Needle	Degree	Particle n (%)	Width (millimeters) Mean ± SD	Length (millimeters) Mean ± SD
1	18	45	14/25 (56%)	0.049 ± 0.020	0.080 ± 0.039
2	18	90	5/25 (20%)	0.044 ± 0.022	0.051 ± 0.018
3	20	45	2/25 (8%)	0.051 ± 0.011	0.082 ± 0.036
4	20	90	2/25 (8%)	0.028 ± 0.044	0.040 ± 0.088
5	21	45	0/25 (0%)	-	-
6	21	90	3/25 (12%)	0.042 ± 0.031	0.055 ± 0.030