Your dog needs to be re-examined by your veterinarian. Panting, anorexia, limping, and swelling all tell me your dog is in pain. This could be from a sprain/strain, sounds like a fracture has been ruled out, arthritis, bony tumor, or joint injury. A common joint injury in labs is a rupture of the cranial cruciate ligament (the ACL in people). This injury is only partially responsive to pain medication and anti-inflammatories.
X-rays may need to be repeated and your dog should be placed on additional pain medication. If your veterinarian is unable to diagnose the problem I would have your dog examined by a veterinary Orthopedic Specialist.
X-rays may need to be repeated and your dog should be placed on additional pain medication. If your veterinarian is unable to diagnose the problem I would have your dog examined by a veterinary Orthopedic Specialist.
