I got this sudden cracking sensation in both my knees one night while going straightening my legs long after sitting with bent knees. it was 1year ago. This pain and cracking sensation and acute inflammation kind of pain around the knee cap area just wouldnt go away. Whenever i try to sit down on the floor or try to stand up from sitting position my knees feel stiff and it pains badly. I try nto keep my knees straight most of the times now and do exercise avoiding putting stress on knees. But this pain is acute. Is it treatable without operation. Doc please help am dying with knee pain at such a young age. :)