Brodie Retallick had the country on the edge of their seats on Saturday when he left the field against the Springboks with a dislocated shoulder.
The scans have since come back confirming no joint damage, but his position in the World Cup remains unclear.
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Former All Blacks doctor Dr John Mayhew is encouraged by the result of the scan but knows playing in the Japan tournament is far from certain.
"The biggest problem with this injury is the recurrence rate," Mayhew told Newshub.
"Depending on the severity of the injury and the damage that occurs, he may elect to go straight away for a reconstruction operation to prevent further dislocation.
"I'd imagine here the medical team would aim to do it non-surgical and hope it settles down and no further injury occurs in the future."
Retallick suffered the injury after being cleaned out illegally in the ruck as the All Blacks and South Africa played out a 16-16 draw.
"From what I understand so far is that he can still be in line for the World Cup," Mayhew says.
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