Hello everyone.  I've been a lurker for a while and this site has helped me greatly.  Thank you.

In March, my Sara had her rear leg amputated due to a nasty fibrosarcoma.  The vet got clean margins and gave Sara a good bill of health.  Sara just turned 11 in September and she was doing wonderfully.  If you didn't see her from the other side, you would never know she only had 3 legs!!

Yesterday she woke up and couldn't put any weight on her back leg.  She would try but it would buckle.  We helped her go outside to the bathroom and she's fine squatting but can't stand.  I was massaging her leg last night and found the spot.  It's on the outside of her leg.  I didn't feel anything there but she nipped at me when I touched it.  I gave her some tramadol last night.  She's not crying out in pain.  It's only tender to the touch.  This morning though, I touched her leg and she didn't nip me.

I'm praying this is just a strained muscle.  Sara forgets she only has 3 legs and she gets wild.  She tried to jump up on someone that came into the house Friday night.

Also, she got her rabies and bordatella shots last week.  Maybe it's tender from that?  But so much that she can't put weight on her leg?  I just don't know.

What is this harness you all speak of.  Sara did so well coming out of surgery, she never needed any assistance.  I'm thinking maybe I should get one now in case this happens again.

If she's not better tomorrow, we will take her to the vet.  Keep us in your prayers.