Why is my dog's shoulder swollen and fluid-filled after an old injury?

Question

I posted a couple weeks ago because a larger dog landed on my 1 year old Yorkie while playing, he was initially limping but it only lasted a day before he was back to normal. Today after he went to the groomer I noticed that his shoulder appears to be swollen it feels almost as though it’s filled with fluid. He has been acting fine and his limping is gone. I have a vet appointment Wednesday but I wanted to address it now. It’s difficult to see but you can tell it’s uneven from the other shoulder. Pet's info: Dog | Yorkshire Terrier | Male | unneutered | 1 year and 2 months old | 8 lbs

Linda G, MS, DVM · Accepted Answer

Hello. I am sorry about your concerns about Chewy. It is possible that this is just a significant bruise & possible hematoma under the skin ( & probably in the muscle ) that is just taking a long time to resolve. A simple seroma should have resolved by now, but if there was a large blood clot that formed from the trauma, that may take a bit longer to resolve. The other, but less likely possibility is that the joint capsule at the scapulohumeral junction ( where the upper leg bone connects to the shoulder ) has torn. This can result in the leakage of joint fluid into the surrounding tissues. This can be repaired surgically if necessary. Your veterinarian will probably recommend an x-ray & try to sample the fluid to see if it is blood tinged ( a seroma ), bloody ( a hematoma ), or clear & stringy ( joint fluid ). None of these is life-threatening, but if this is joint fluid, Chewy could wind up with some arthritis in the shoulder. So do not worry too much until you have a chance to have things looked at. Thanks for using Petco Pet Education Center, formerly Petcoach.

Why is my dog's shoulder swollen and fluid-filled after an old injury?

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