Wales have added Cardiff Blues back Hallam Amos to their Six Nations squad.

Amos, 25, initially missed out on selection because of an ankle injury but his return is timely given Wales' fitness concerns among the backs.

Owen Lane is out with a hamstring injury, while fellow wing Josh Adams left the field with a knock to his hip during the defeat in Ireland.

"Josh is training fully so hopefully he's going to be ready," said Wales forwards coach Jonathan Humphreys.

Wales remain confident fly-half Dan Biggar will be fit despite the Northampton player being forced off against Ireland after failing a head injury assessment early in the second half.

It was a third head knock for Biggar in five months after injuries against Australia and Fiji in the 2019 World Cup in Japan.

Forwards coach Jonathan Humphreys confirmed Biggar was taking part in full training with Wales saying the fly-half has passed all his concussion protocols.

Wales Under-20s fly-half Sam Costelow has been training with the senior squad to help make up the numbers with Cardiff Blues number 10 Jarrod Evans the other specialist fly-half in the squad.

Humphreys also confirmed Dragons forward duo Cory Hill and Elliot Dee were unlikely to be fit for France after missing the first two games through injury.