Morgan missed eight Tests after suffering the shoulder injury at Principality Stadium in Steve Tandy’s first game in charge.
The Gloucester-bound flanker returned to play in the 33-31 victory against Barbarians at the Allianz Stadium at Twickenham.
It was an uncapped warm-up game for the Nations Championship tournament which starts with the opening game against Fiji at the Cardiff City Stadium next Saturday before away trips against Argentina and South Africa.
Morgan took over the captaincy at half-time when Lake was taken off.
“I love being back,” said Morgan. “It’s always an honour to be able to put the jersey on and I was chuffed to be back in the field with the boys.
“It was a tough game against a good Barbarians side and it was great to be able to get that win.”
Morgan says he has seen improvements under Tandy since his return.
“It’s been great to be able to watch because you can see how Steve and the coaches want to implement the game,” said Morgan.
“You can see during the Six Nations we’re getting better every game. You could see the identity we were trying to bring through.
“You always want to be out in the field, but it was great to be able to watch the boys play and I thought they did a brilliant job.”