I just had 33 cc of fluid removed from my knee. after i had the fluid removed i was unable to bend my knee. why is that? also later in the day something painfully propped really loud in my knee now i can only walk straight legged. what happened?

The fluid within your knee joint was caused by an injury or inflammation. Removing 33 cc would not relieve symptoms caused by injury to cartilage or ligaments or acutely inflamed joint lining. Perhaps the fluid was actually acting as a cushion that mitigated some of the pain. Have you a history or knee injury? Did alot of kneeling? Have you had an MRI. Your orthopod or rheumatologist will advise u