OH....He HAD surgery and the patella is in place, but he still carries his leg 
 
 
hmmm....did the pin migrate????  That happened to Roxy.  Or maybe arthritis already set in 

 
 
I have about 5 of these foams ramps for the couches 
 NEW Foam Dog Cat Pet Ramp - eBay (item 200362067982 end time Jul-18-09 19:09:12 PDT)
  NEW Foam Dog Cat Pet Ramp - eBay (item 200362067982 end time Jul-18-09 19:09:12 PDT)