Pro wrestling legend Kevin Nash says his knee is finally fixed after surgery -- but you wouldn't know it looking at this GNARLY photo of the aftermath.
Nash just revealed that he went under the knife to replace a bum knee that's been bothering him for 33 years -- and what's left of it looks like something straight outta the "Saw" movies.
We counted 24 staples ... plus severe bulging that made us question if it was actually a knee.
The craziest part -- Big Daddy Cool says it was an "amazing process," and he's pumped to "let it heal and start training" at age 58.
Maybe take it easy for a few days??
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