Oscar Pistorius Trial: Sports Doctor Speaks of Amputee His Disability A Sports doctor, Wayne Derman says South African double amputee, Oscar Pistorius has been greatly affected by his disability. He told the court in Pretoria that the Paralympian suffers significant stress and anxiety. Mr. Pistorius says he shot his girlfriend Reeva Steenkamp after mistaking her for an intruder in their house last year. The prosecution argues that he killed her deliberately after a row. At issue, is the athlete's state of mind at the time of the shooting? On Monday, the court heard he was not suffering from a mental disorder when he shot Ms Steenkamp. According to a psychiatrist's report, Mr Pistorius, 27, is capable of distinguishing between right and wrong and so should bear criminal responsibility for his actions. Source: BBC