This step was seen as a particularly positive one for the couple after specialists were concerned about the future function of Michael's arms.
"6 months ago, docs were mostly concerned that his arms & hands would ever move/feel/function again, (more so than his lower body being restored) Seeing him lift today made me cry because I know this is costing him far more than just his physical strength," Tatiana posted on her Twitter account.
Meanwhile, Worcester Warriors have vowed to "continue to go over and above what is expected" in their support of Fatialofa, who is facing medical bills of £100,000 ($NZ190,000).
Warriors are planning to stage a fund raising day for Fatialofa when Premiership matches resume to help boost a fund for the player, which currently stands at £41,000 (NZ$79,000).