I fell at the gym in shower and went backwards onto my back which now requires surgery. Is the gym liable?

When you join the gym, you sign a general release. My membership is in my mother's name, who is now deceased, but I signed the form. The gym rep signed me up this way because he wanted to get me in on the "special" and I had already had a membership. My back is severly injured requires surgery, as well as chiropractic care, physical therapy and some neurological issues. The floor in the shower was slippery and I fell backwards as I was stepping out of the shower. I grabbed the shower curtain because there was no grab bar. Obviously it did not keep me from going down. I went to the ER immediatley following and told the front desk at the gym, but they just wanted to know which stall I fell in. They did no paperwork. I briefly lost consciousness and called for help, no one there.