Hi Everyone

First off, thank you for offering such a wealth of information on this site...I have spent the past few days reading dozens of posts, watching videos and looking at recommendations.

I'd like to introduce my 13yr old black Lab/Rottie mix Mojo who will become a tripawd tomorrow. We started noticing symptoms about a month ago, the first being mid Feb and awoken from a dead sleep to a loud thud. Hubby and I jump out of bed and Mojo is in the foyer limping so we figured she fell down the hardwood stairs. She has fallen down the last 3-4 before spread eagle like superman and has gotten up and walked away like nothing happened. So we gave it a few days but she wasn't able to shake the limp. She was already scheduled to see her Oncologist that week for her regular 8 week check (she was diagnosed with lymphoma about a year ago) so he went ahead and did a physical exam and recommended xrays. X-ray came back showing bone loss in her left front elbow, he took her off her chemo since the lymphoma has been in remission and we went home with some pain meds and anti-inflammatory pills and strict low to no activity for two weeks to rest her leg. The limp went away and she seemed back to herself. Two weeks went by and we go back for another x-ray...more bone change is noticed and while there could have been a hairline fracture in her elbow from her fall which wouldn't show but the bone changes could be a result of the bone trying to heal. The oncologist consulted with the surgeon and the thought it that while it could be a hairline fracture trying to heal, it could also be Osteosarcoma. We went home with instructions to come back in a month (March 8) for another X-ray. Well the Sunday prior Mojo start limping again (we already started blocking the stairs after her last superman imitation. So March 8 comes and we see the surgeon who does another x-ray (more bone changes) and can tell that she is in pain just from a physical exam. At this point I learn of the possible options to try and treat a dog with Osteosarcoma (the hairline fracture notion just doesn't support the x-ray) and spend the week having various calls with the Oncologist.

While nervous about it in terms of her age, Mojo is a very stubborn/hard headed dog who does not act 13 and we think she will pull thru okay, we decide to amputate. 

Mojo goes to VCA South Paws in Virginia and they are participating in the ELIAS Animal Health Canine Osteosarcoma Immunotherapy Trial (https://eliasan.....ci-osa-04/) and Mojo has been accepted into the trial! I don't know at this point if she will be put in the chemo group or the immunotherapy group. Anyone else on here have a dog in the study?

Again, thanks for all the information that has been shared so far.