The 25-year-old limped off the pitch during Sunday's 1-1 draw with West Bromwich Albion at Upton Park.
After the game, manager Slaven Bilic admitted that he was 'worried' about the injury, but according to PA, the club are not yet sure of its severity.
Some reports have claimed that Sakho could be out of action for three months.
Restore Data
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Arsenal | 35 | 25 | 5 | 5 | 85 | 28 | 57 | 80 |
| 2 | Manchester CityMan City | 34 | 24 | 7 | 3 | 82 | 32 | 50 | 79 |
| 3 | Liverpool | 35 | 22 | 9 | 4 | 77 | 36 | 41 | 75 |
| 4 | Aston Villa | 35 | 20 | 7 | 8 | 73 | 52 | 21 | 67 |
| 5 | Tottenham HotspurSpurs | 33 | 18 | 6 | 9 | 67 | 52 | 15 | 60 |
| 6 | Manchester UnitedMan Utd | 34 | 16 | 6 | 12 | 52 | 51 | 1 | 54 |
| 7 | Newcastle UnitedNewcastle | 34 | 16 | 5 | 13 | 74 | 55 | 19 | 53 |
| 8 | West Ham UnitedWest Ham | 35 | 13 | 10 | 12 | 56 | 65 | -9 | 49 |
| 9 | Chelsea | 33 | 13 | 9 | 11 | 63 | 59 | 4 | 48 |
| 10 | Bournemouth | 35 | 13 | 9 | 13 | 52 | 60 | -8 | 48 |
| 11 | Wolverhampton WanderersWolves | 35 | 13 | 7 | 15 | 48 | 55 | -7 | 46 |
| 12 | Brighton & Hove AlbionBrighton | 34 | 11 | 11 | 12 | 52 | 57 | -5 | 44 |
| 13 | Fulham | 35 | 12 | 7 | 16 | 51 | 55 | -4 | 43 |
| 14 | Crystal Palace | 35 | 10 | 10 | 15 | 45 | 57 | -12 | 40 |
| 15 | Everton | 35 | 12 | 8 | 15 | 37 | 48 | -11 | 36 |
| 16 | Brentford | 35 | 9 | 8 | 18 | 52 | 60 | -8 | 35 |
| 17 | Nottingham ForestNott'm Forest | 35 | 7 | 9 | 19 | 42 | 62 | -20 | 26 |
| 18 | Luton TownLuton | 35 | 6 | 7 | 22 | 48 | 77 | -29 | 25 |
| 19 | Burnley | 35 | 5 | 9 | 21 | 38 | 70 | -32 | 24 |
| R | Sheffield UnitedSheff Utd | 35 | 3 | 7 | 25 | 34 | 97 | -63 | 16 |
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