Christ! hope he doesnt read this he will panic!!! End his career??? NO!!!!!!
He will be fine. In many regards fractures are far more preferable to severe tissue damage. With the right treatment he will be fine. A massive set back, yes. But even if he requires open surgery to insert pins and plates he will be fine. Often pin and plates speed up recovery as the need to immobilisation is not as great, therefore muscle atrophy is less.
He will be fine!
Not a surgeon, sadly learned first hand