Since you didn't, I can't tell if there are other threads on this guinea pig that would help give a history of its health.
I am posting the pictures you sent me but they are not clear and do not seem to show what is going on. Look over the info on spurs on this page:
Lynx - I have posted many times, but looking back over I have never posted about her as far as I can tell, only the boys. Past medical history would be pneumonia (recurred twice) and an inbred pregnancy + a second inbred pregnancy that was back-to-back (which was emergency spayed in an attempt to save her life).
Do keep her nails clipped. Some guinea pig seem to have curving nails - routine clipping is mainly important to prevent twisting of the toes and eventual curvature into the foot.
- Supporter 2004-2018
(ETA-duplicating what Lynx was posting at the same time as I was.)