CHANGE OUT OF BALANCE ROPE IN SERVICE SHAFT: EE LIFTED ROPE & PUT IT ON HIS SHOULDER TO PULL IT FROM THE SUMP. IN DOING SO HE FELT HIS KNEE POP.HE FELT THAT HE WAS OKAY & WANTED TO CONTINUE TO WORK. ON THE 9TH OF JANUARY HIS KNEE HAD STIFFENED UP & GAVE HIM SOME PAIN. AT THIS POINT WE SOUGHT MEDICAL AID.