The 34-year-old centre broke his jaw for a second time in two months in South Africa's 46-6 win over Samoa on Saturday and was ruled out of the rest of the tournament in England before announcing his retirement from test rugby after 107 caps.
He returned to a hero's welcome at Cape Town airport from around 100 flag-waving boys from his former school plus a scrum of well-wishers and media.
"It's probably about 90 percent certain that I'll have surgery but I have to see the dentist first because apparently my wisdom teeth are lying at a bit of an angle and that has created a weakness in the jaw structure," he told reporters.
