I don't suppose it really matters what sort of dog it's for but this is to do with Ella, our 3 year old Westie.
When she was 5 months old, she was diagnosed with LEGG-PERTHES DISEASE and at 7 months, she had a femoral head and neck excision (rear left leg). She's never had any problems with the leg since and has run and walked normally - up until about 5 weeks ago.
At this point, we noticed that she was limping, so we rested her for a day or two but she still limped and occassionally held the leg right off the ground. The vet examined her and advised a weeks rest and some Rimadyl. She seemed to be OK for a while after that but then she started again so on Tuesday of last week, she had xrays done. My vet showed me the xrays and said the knee looks fine but there looked to be some 'loss of bone density' and she pointed out an area down one of the long bones. She send the xrays off to an orthopedic specialist centre and we are waiting for their report. I've phoned twice to hurry them along because Ella seems worse than ever. She's pretty much fine in herself but for the past couple of days, she's basically behaving like a tripod and carrying that leg totally
Other than the obvious (which would be really, really, really bad luck in a small breed dog - wouldn't it? ) what else can cause loss of bone density? And does anyone have experience of such a thing and any treatments?