Originally Posted by Shane P. Hallam
Yes, as does Nick Collins (which has been an issue for him throughout his career).
Are you sure about that? The Milwaukee Journal Sentinel and Green Bay Press Gazette were reporting, after Nick Collins' injury last year, that he had no prior history of spinal stenosis.
From a Press Gazette piece dated 9/19/2011
Good news for Collins, though, is that he does not have stenosis, according to Herman. Stenosis is a narrowing of the spinal column, and players who have it and sustain neck injuries often have to retire.
(N.B. Alan Herman is Nick Collins' agent)
The Packers ended up waiving him after their doctors concluded that playing after surgery would put him at significant risk of catastrophic injury if he suffered another spinal cord compression type injury (which is something safeties are at comparatively high risk for). This is more or less what stenosis means (you're fine, but if you suffer a spinal compression injury it can very bad).
Certainly there's degrees of it (it's essentially just narrowing of the spinal column, so there's a continuum of it), but the Packers parted way with Collins (as well as Terrence Murphy and Jeremy Thompson, and Tim Lewis back in the 80s) because their doctors concluded that their neck conditions put them at too high a risk of significant spinal cord injuries, not because they could no longer play.