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Does a dog's torn ACL heal on its own, or is surgery needed?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Male | neutered | 5 years and 10 months old | 103 lbs

My dog has been diagnosed with a torn ACL. (Complete tear) This was diagnosed via x-rays that we got for him yesterday under sedation because he's a large dog, (103 lbs. - German Shepard / Akita mix) . My dog is 5 1`/2 years old and I love him dearly. Here's my question though. I was recently laid off and am also going through a divorce. The surgery will cost $4,500 plus I just spent $729 yesterday on x-rays, sedation, pills, etc. Can this injury heal on it's on or does he need surgery?

1 Answer

Most Helpful Answer

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Answered By Anna M., DVM

Veterinarian

Published on January 18th, 2018

Hello, and thank you for using Petco Pet Education Center, formerly Petcoach. I'm sorry to hear about Jaeger's injury! Unfortunately, a torn ACL will not heal, as ligament tissue cannot re-grow. So, he does need surgery in order to maximize his ability to use that leg. With that said, there are certainly plenty of dogs (and humans!) out there who do not have their torn ACL surgically repaired, and instead manage the injury with pain meds, anti-inflammatories, and rest as needed for life. But, without surgery that stifle ("knee") will remain unstable. Additionally, dogs who tear one ACL are at increased risk of tearing the other, which in my opinion adds another reason to pursue surgery, so if that happens Jaeger wouldn't have *2* unstable stifles. I hope this helps - you're welcome to request a consultation if you'd like to discuss Jaeger's injury in more detail!

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