Stabbing like knee pain

I’ve had OA diagnosed in my hips but pretty sure it’s in my knees as well. I get the pains you describe, although it is most likely referred pain from my hip, as this didn’t happen till my hip started caving in. . Simply sitting or lying comfortably seems to reduce how often it happens, but sometimes one comes from nowhere and clouts my knee even when sitting still. I haven’t really found the cause or cure, other than mollycoddling my rubbish hip and deep breathing when the pain kicks in until it recedes. The better my hip is feeling, the less often this happens, so maybe that will help for your knee too. I find a hot wheat bag helps settle it down when I’ve been overdoing it, so might work for you too?

Yes, I do. Comes & goes out of nowhere when resting with the telly in the evening, in bed. No, I don't know a cure, sorry. Medication doesn't really help, neither analgesia nor anti-inflammatory. I change positions frequently to try & avoid/placate. Living alone allows for eccentric & unseemly positions! Best wishes.

I feel like an old woman at times but normally I am content living on my own with my cat!

I get that exact pain, it's excrutiating and no position is comfortable. I also get it when sat in the car, from my knee down. I was taking Zapain and ibuprofen and using biofreeze. It took the edge off, but just had a total knee collapse, the muscles/tendons round the knee went so I've been on crutches for 2 weeks, saw a musculoskeletal specialist who told me to ice it for 20 mins twice a day and then use ibuprofen gel along with some exercises. I must admit, its helping.