My son received his letter from capita saying he is medically unfit. No grade and it doesn't say if it's permanent or temporary. He had a tibial spine injury to his knee in 2010, 8 years ago. he had a screw put in and then removed. They have said this is an intra articular fracture. Such history precludes entry to the armed services. The injury was fixed and has caused no issues or loss of function. He plays football and runs etc. Can we appeal against this decision and has anyone with the same injury been successful. He is gutted.