The development of whole blood titanium levels after instrumented spinal fusion – Is there a correlation between the number of fused segments and titanium levels?

Table 1 Demographic data group I

Patient	sex	age	Diagnosis	Fused levels	length of intstrumantation	Number of interbody devices	Type of Implant	Titanium levels (ug/l)
								Präoperativ	2.p.o.	10.p.o.	3 Mon p.o.	12 Mon p.o.
1	f	73	DLS	10	1626	3	MPDS	56	34	26	29	37
2	f	55	LS	1	381	1	MPDS	33	44	ø	63	36
3	f	16	Scoliosis	6	864	0	MADS	34	ø	48	ø	31
4	f	16	Scoliosis	6	869	0	MADS	39	43	39	ø	96
5	f	22	Scoliosis	5	811	0	MADS	48	ø	42	54	94
6	m	45	Scoliosis	5	1076	2	MADS	54	42	44	55	31
7	f	68	LS	1	370	1	Expedium	53	ø	39	54	33
8	f	85	LSCS	4	824	1	Expedium	61	49	49	63	96
9	f	61	LS	1	410	1	Expedium	53	ø	49	40	47
10	f	61	LSCS	2	550	1	Expedium	49	ø	31	45	35
11	m	30	LS	1	405	1	Expedium	47	52	ø	40	142
12	f	42	Scoliosis	6	965	0	MADS	38	ø	ø	37	42
13	f	20	Scoliosis	11	1520	0	Expedium	51	42	3	38	37
14	f	55	DLS	6	1415	0	Expedium	69	33	37	32	36
15	m	58	DLS	4	540	0	Expedium	34	34	45	82	34

DLS: Degenerativ lumbar scoliosis, LS: lumbar spondylolisthesis, LSCS: lumbar spinal canal stenosis, MAPS: Muenster-Anterior-doublerod-system, MPDS: Muenster-posterior-doublerod-system.