Henry Paul will miss the remainder of the season after Gloucester's medical team confirmed he has damaged the medial ligament in his knee.
The England international injured his knee playing for England Sevens at the World Cup in Hong Kong 10 days ago and was ruled out of last Saturday's win over London Irish.
Paul is set to be out for between six and eight weeks and will be unavailable for Gloucester's final three Zurich Premiership games, and any play-off matches.
Commenting on www.gloucesterrugbyclub.com Melville said: "It's a set-back but in some ways sums up our season. We have just had so many people injured at crucial periods, but you only have to look around the Premiership to see that other clubs are in a similar situation."
Commenting on www.gloucesterrugbyclub.com Paul added: "It's a big disappointment. I'm concentrating on getting back to full fitness, and will be right behind the rest of the team as we push for the top three slot in the Premiership and next season's Heineken Cup."
Paul, who has missed only a handful of games in four seasons with Gloucester, will see a specialist next week who will assess whether an operation is required.
Despite the injury, Nigel Melville's fly-half options could be boosted for Gloucester's next Premiership game at home to Leeds Tykes on Saturday 9 April with the return of Duncan McRae.
The Aussie stand-off has had an injury hit season, with his most recent knee injury ruling him out since the defeat away at Quins at the beginning of February.
As well as McRae's possible return, 22 year-old Brad Davies, who played the full 80 minutes at number 10 for Gloucester in the 13-12 win over London Irish on Saturday, was in commanding form for Gloucester against the Exiles at the weekend.
Having skippered Scotland to a hard fought 25-13 defeat against England at Twickenham on Saturday, Greig Laidlaw spoke of the frustrations of his side doing so many good things and making real progress as a team but still finishing on the wrong end of the scoreline.
GRTV caught up with Neil McCarthy as he was unveiled as the new Head of Academy. The ex-Gloucester front rower is looking forward to getting to work with the vast arrays of talent in the Academy and across Gloucestershire.
Although understandably disappointed to see Northampton snatch a 33-33 draw with a last gasp try on Saturday, Gareth Evans told GRTV after the game that the result shows how far Gloucester have come as a team this season.
Gloucester scrum half Greig Laidlaw spoke to GRTV after the 33-33 draw with Northampton Saints on Saturday, and the Scotsman described how the hosts played some great rugby, but will rue not holding the lead which keeps them in touch with the top seven.
Although Gloucester could take many positives from the 33-33 draw with Northampton Saints on Saturday, centre Bill Meakes admitted it was a strange feeling at the final whistle with Gloucester having probably done enough to win the game.
Speaking after the 33-33 draw with Northampton Saints on Saturday, David Humphreys admitted that he was happy with many aspects of the team's performance but regretted a missed opportunity to defeat the Premiership champions.
Speaking to the local media this week, Richard Hibbard is relishing his return to the Cherry and White jersey as the hosts take on Aviva Premiership leaders Northampton Saints on Saturday afternoon (ko 3:15pm)
Ahead of the visit of Northampton Saints to Kingsholm in the Aviva Premiership on Saturday (kick off 3:15pm), Head Coach Laurie Fisher admitted that it's good to have more selection options as the RBS Six Nations takes a break.
Fresh from his first training session with the Cherry and Whites, new arrival Brendan Macken spoke exclusively to GRTV ahead of his time at Kingsholm. The Leinsterman is keen to experience Kingsholm and the rugby heritage at Gloucester.
Gloucester Rugby are used to repaying their loyal supporters with blistering displays on the pitch, but prop Dan Murphy insists there is now another way to give back with the launch of the Aviva Community Fund.