Sergeant Gadd, who was injured after stepping on a Taliban bomb in Afghanistan in October 2010, has recently been fitted with the Genium "bionic" leg.
Now, Defence Secretary Philip Hammond has revealed how he has seen first-hand the difference the prosthetic is making to the lives of people, such as Sgt Gadd, a member of 299 (Parachute Squadron) Royal Engineers.
He said: "Our priority has always been to give our troops the best possible care and support.
"I am also delighted to see first-hand how the new 'bionic' leg has inspired confidence among our personnel and provided them with new opportunities including better stability, greater mobility and reduced back pain."
Sgt Gadd, who lives in Beverley Road with his partner and daughter, said: "There's a much better range of movement.
"It bends a lot more and makes climbing stairs easier."
