"There is some pain in the shoulder. I hope to be fit before the tournament," Saina told PTI.
The Olympic bronze medallist has been unlucky when it comes to her fitness ahead of the World Championship. She had an upset stomach during the 2013 edition and ahead of the 2009 event she was diagnosed with chicken pox.
Earlier this year, Saina had developed a shoulder pain en route to her historic runners-up finish at the prestigious All England championship in March.
The 25-year-old will start her campaign in the second round, taking on the winner of the match between Hong Kong's Cheung Ngan Yi and Kati Tolmoff of Estonia. She is likely to take on Takahashi of Japan in the prequarterfinals and if she can cross the hurdle, it is likely to be a battle against Wang Yihan of China.
Saina has a 3-0 record against Takahashi but twice it has been a three-game match, while against Yihan Wang it is a 2-9 record but the Indian will take heart from the fact that she had beaten her in the All England Championship in March.
