Attention, please! My 20th Anniversary DVD Edition Optimus Prime's right leg-to-pelvis joint is broken. Can someone help me?
Without pictures showing off the break, or at least a very detailed description, I find it unlikely that anyone will be able to help all that much. If it's actually broken, though, you may be out of luck. Ratchet joints are very high stress areas. So unless you just plan on gluing it up and never playing with him again, there's a very high chance of it breaking again.
I doubt even less people will be able to help in this section, too. Ask the Radicons, someone will be able to fix it, or tell you how.
Now what does his waist piece look like? Because that piece looks generally intact (as far as I can tell, because it's blurry in close-up).
Yeah, you messed that up pretty good. The only way I could think of fixing it is super/krazy gluing the broken pieces back together being very careful not to get it into any joints (well, the unbroken ones, anyways).
Big news! I fixed it by connecting the joints together again! When I pull it lightly, it stays tight!