3 weeks ago, displaced rib plated, returned home from the hospital, i shot up from bed and felt severe pain, now i feel popping could a screw be loose?

Separated Rib?: It is possible that you have either broken or separated a rib. A broken rib is exactly what it sounds like. A separated rib is a rib that has the bone separated from the flexible cartilage that normally attaches it to the sternum. Either way you should have it evaluated by a physician. May need an Xray to confirm that the rib is aligned properly, or that something more serious is not present.