Acl
Maybe a torn ACL - anterior cruciate ligament? Any X-ray taken to differentiate. That does require surgery, unfortunately. Common 'athletic injury' with dogs ramming around and often the other leg will go or the same again due to 'overexuberant activities'. Give him lots of hugs and dog licks for me!
http://en.wikipedia.org/wiki/Anterior_cruciate_ligament
Maybe a torn ACL - anterior cruciate ligament? Any X-ray taken to differentiate. That does require surgery, unfortunately. Common 'athletic injury' with dogs ramming around and often the other leg will go or the same again due to 'overexuberant activities'. Give him lots of hugs and dog licks for me!
http://en.wikipedia.org/wiki/Anterior_cruciate_ligament