Table 4.

Morphometric parameters of ossification centers of neural processes of vertebra C4

Age (weeks)	n	Right neural arch								Left neural arch
		Length (mm)		Width (mm)		Cross-sectional area (mm2)		Volume (mm3)		Length (mm)		Width (mm)		Cross-sectional area (mm2)		Volume (mm3)
		Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD
17	1	3.40		1.66		6.40		8.37		3.49		1.62		4.60		6.17
18	3	3.52	0.23	1.63	0.06	8.50	1.82	8.45	1.03	3.83	0.67	1.63	0.05	8.80	0.70	8.30	0.95
19	8	3.88	0.08	1.74	0.07	5.92	0.78	9.01	0.84	4.63	0.11	1.74	0.08	6.63	1.67	8.83	1.57
		↓		↓		↓		↓		↓		↓		↓		↓
		(P < 0.001)		(P < 0.01)		(P < 0.01)		(P < 0.01)		(P < 0.01)		(P < 0.01)		(P < 0.01)		(P < 0.05)
20	4	4.64	0.27	1.88	0.08	6.85	0.79	8.65	1.47	4.82	0.43	1.83	0.09	5.68	0.79	8.68	1.51
21	4	4.58	0.44	2.04	0.02	8.58	1.85	11.77	2.27	5.17	0.82	2.02	0.04	6.15	0.51	9.45	0.13
22	4	5.35	0.35	2.21	0.16	8.48	0.22	13.65	1.58	5.62	0.56	2.18	0.14	9.78	1.44	13.60	2.60
		↓		↓		↓		↓		↓		↓		↓		↓
		(P < 0.01)		(P < 0.01)		(P < 0.001)		(P < 0.01)		(P < 0.05)		(P < 0.01)		(P < 0.001)		(P < 0.001)
23	5	5.40	0.25	2.28	0.20	11.58	2.70	15.20	2.65	6.37	0.28	2.25	0.20	11.68	1.82	15.46	3.05
24	9	5.73	0.55	2.56	0.18	12.66	2.26	16.74	2.97	6.10	0.35	2.54	0.17	12.18	1.73	16.46	2.65
25	1	6.29		2.71		11.90		15.50		5.50		2.69		11.20		15.00
		↓		↓		↓		↓		↓		↓		↓		↓
		(P < 0.01)		(P < 0.05)		(P < 0.001)		(P < 0.001)		(P < 0.001)		(P < 0.05)		(P < 0.01)		(P < 0.001)
26	2	6.91	0.11	2.66	0.01	13.70	3.39	18.40	1.56	6.81	0.54	2.62	0.00	12.05	4.31	16.65	2.19
27	6	5.63	2.08	2.56	0.28	12.67	4.28	17.03	3.62	5.75	1.82	2.50	0.26	10.53	3.09	14.93	3.47
28	2	7.07	0.24	2.97	0.11	16.30	3.68	23.90	5.23	7.78	0.42	2.95	0.11	16.15	1.34	22.15	4.45
		↓		↓		↓		↓		↓		↓		↓		↓
		(P < 0.05)		(P < 0.05)		(P < 0.01)		(P < 0.01)		(P < 0.05)		(P < 0.05)		(P < 0.05)		(P < 0.01)
29	2	7.55	0.01	2.62	0.01	16.05	0.21	20.55	0.07	7.38	0.01	2.59	0.00	15.20	0.14	18.05	0.07
30	4	7.55	0.32	2.67	0.27	18.05	7.36	21.53	3.15	7.38	0.30	2.59	0.32	15.03	5.60	19.83	2.44