During Season 12, Kerry's hip started to cause her pain after she slipped in the ambulance bay. After a lengthy internal struggle with whether or not she wanted to have surgery to correct her hip and dispel her of her life-long disability, Kerry finally decided to undergo a total hip replacement because she was no longer able to keep up with her work in the ER or her toddler son, Henry. Kerry's crutch of justice Laura Innes, Shane West, Parminder Nagra, Scott Grimes, Laura Cerón