The Biological Effects of Combining Metals in a Posterior Spinal Implant: In Vivo Model Development Report of the First Two Cases

Table 1

Surgical parameters.

	P12	P2
	Male	Male
Levels instrumented	T12, T13, L1, L2, L3	L1, L2, L3, L4, L5
Length of surgery	125 min.	140 min.
Weight gain	26%	48%
Length increase	6%	19%
Implants in place	12 months	12 months
Blood loss	10 cc	<20 cc