Fiat Yamaha Team rider Jorge Lorenzo is recovering well after undergoing a successful operation on his right arm. The 20-year-old has suffered from pain due to Compartmental Syndrome, often referred to as ‘Arm Pump’, during the first three races and the operation was performed yesterday afternoon by Dr. Xavier Mir, head of arm surgery at the Institut Universitari Dexeus in Barcelona. The procedure, which is fairly common amongst MotoGP riders, aims to loosen the muscle compression inside the arm in order to relieve pain and loss of strength, which typically occurs with Compartmental Syndrome when the muscle is under stress. The decision was taken yesterday to go ahead whilst the joint world-championship leader has the maximum possible time to recover before the next race, which is in China on 4th May.