Manchester United full-back Luke Shaw was taken to hospital after suffering a horror injury a quarter of an hour into his team's opening Champions League clash with PSV Eindhoven on Tuesday.

The game was held up for almost 10 minutes as the England international received treatment on the pitch from a posse of medical staff before being stretchered off with an oxygen mask over his face.

Around half an hour later, though, Shaw took to Twitter to vow that he would make a full recovery, although he gave no details about his injury.

"Thank you everyone for your messages, words can't describe how gutted I am, my road to recovery starts now, I will come back stronger," he tweeted.

Shaw was surging into the box when he was hit with a crunching and dangerous two-footed off-the-ground tackle by Hector Moreno.

Manchester United later confirmed he had been taken to hospital with a suspected broken leg.

Incredibly, no foul was given and Moreno was not even booked -- he later equalised Memphis Depay's opener against his former club.

Shaw was replaced by Marcos Rojo.