By: Douglas W. House, SA News Editor Thinly traded nano cap Xtant Medical Holdings (NYSEMKT:XTNT) is up 16% premarket, albeit on turnover of only 2,200 shares, in response to its announcement that wholly owned subsidiary X-spine Systems has received FDA clearance of its Xspan Laminoplasty Fixation System. Laminoplasty is a surgical procedure to relieve pressure on the […]