The X Factor star Olly Murs, 37, has revealed he’s “done a bit of damage” to his shin bone shortly after he had to undergo surgery on his knee in August.The Troublemaker singer was previously admitted to hospital after a fragment of bone became lodged in the back of his knee.He sustained the injury from jumping into the air during an on-stage performance.Unfortunately, it seems Olly couldn’t give himself the time he needed to recover from the operation and has sustained another injury.The star had to rush back to work due to his tour commitments and taking part in Soccer Aid."After my last operation I was supposed to rest for about eight to 12 weeks, but obviously I couldn't because I was jumping around on stage singing, and did Soccer Aid.