my sports dr. thinks i have a labral tear aswell. and he asked me if i had numbness on the affected side and i said yes. my numbess comes at random times too but not when i'm sleeping, more when i get up after sleeping or resting. so more than likely its the cause of our numbness. it surprises me that theres not more information on the net about it. and these dr.s nowadays dont believe us when we say it causes tremendous amounts of pain. idk why they dont but it pisses me off. the pain i felt was so bad that i was walking like a chicken with a broken leg on crack. good luck with your surgery hope u feel better.