once i put all my body weight on my left hand when i was sitting in a car after sitting i saw my hand at joint feel pain n little swelling at the middle of joint...i feel no pain in this swelling area but i feel i cant grab things tightly n if i pull any thing from this hand i feel pain.doctor told me it is fibrosis..its not harmful but it can only remove by cosmatic surgery...my hand look abnormal because of it..plz tell me what is it