TABLE 1.

Donors’ data and testing parameters for flexion and extension.

Specimen	Sex-age	Lumbar level	Offset (mm)		Axial displacement variation (mm)		Testing load (N)
			Flexion	Extension	Flexion	Extension	Flexion	Extension
P01	M-68	T12-L1	12.3	24.5	−0.59	−1.35	402
		L4-L5	14.6	29.3	−0.49	−0.35	402
P02	M-79	L2-L3	15.1	30.1	–	−0.61	–	387
P03	M-53	L2-L3	13.1	26.3	−1.40	−0.73	402
		L4-L5	13.6	27.2	−2.21	−0.15	402
P04	F-35	T12-L1	10.4	20.8	−0.37	−0.21	309
		L2-L3	10.7	21.5	−3.20	−0.43	309
		L4-L5	11.0	22.1	–	−0.34	–	309
P05	F-68	T12-L1	9.1	18.2	−2.06	−0.84	396*
P06	M-59	L2-L3	10.9	21.8	0.49	−0.02	326*
		L4-L5	11.6	23.2	0.59	−0.52	140*	326*
P07	F-78	L1-L2	12.9	25.8	−0.46	−0.09	348
		L3-L4	13.4	26.9	1.05	−0.69	348
P08	M-79	L1-L2	12.8	25.7	−2.02	−1.34	456
		L3-L4	14.8	29.5	−1.22	−0.68	456
P09	F-86	L1-L2	13.6	27.2	−1.17	−0.56	265*
		L3-L4	15.8	31.5	−0.92	−0.61	265*
P10	M-71	L1-L2	11.9	23.7	−1.98	−0.38	343
		L3-L4	13.3	26.5	–	−0.40	–	343
P11	M-68	L2-L3	12.6	25.3	−0.44	−0.11	319
		L4-L5	13.2	26.3	−1.51	−0.01	319
P12	F-80	L3-L4	13.9	27.9	−0.63	−0.42	378
P13	M-64	L1-L2	12.8	25.6	−1.62	−0.09	417
		L4-L5	14.9	29.8	−4.31	0.09	417
P14	M-73	L3-L4	16.6	33.1	−2.12	−0.57	515
P15	F-74	L1-L2	12.3	24.6	−1.65	−1.01	412
		L4-L5	15.4	30.7	−1.16	0.24	412

*Reduced load to avoid damages.