showbiz gossip straight to your inbox with the Daily Star's FREE newsletterAtomic Kitten star Kerry Katona has revealed she will be needing surgery on her back following a new health diagnosis.The mum-of-five has been struggling with chronic back pain for years and has been told she will need surgery after finding out she has arthritis.The 41-year-old says she has been complaining about her back for years and has now been told she needs an operation to help her back.On Instagram, Kerry announced: "For those of you who know all about the pain and agony I’ve been in for years with my back and shoulders."I’m so excited to of actually being diagnosed with arthritis in my shoulders and a protruding disc in my back which can be operated on!!"She.