hi we have a yorkie called melly and she is 4 and a half ..recently she started hopping on back leg and then just tucked it up and stopped using it!! ...vets last week thought it was patella problems and advised x-ray...vets for full xray yesterday and they told us she has torn cruciate ligament this is causing patella to slip all the time ...they are concerned about operating as she is so tiny (3.4kg) and the lenght of time the op will take they dont know if she would survive the op....they have now recomended metacam which we have started and cage rest for 8 weeks to stop her jumping /running ect and only take her to loo on leash!!! if after 8 weeks she no better we have to decide on op....but...after being told the risk we really do not want to risk loosing her...i found some info suggesting glucomine tablets and have ordered some ...any other help and advice would be brill...