The kink is not always recognizable from birth. The rod misalignment can only become apparent during the growth phase. In most cases, it is a genetic defect that is inherited. A four-legged dog with a kinked tail is usually not handicapped and can (and should) be treated like the normal dog that he is.
What exactly is a dog kink?
The term "kinked rod" is actually a generic term that is used to summarize all rod errors that result in a change in the axis. If a tail vertebra is deformed, it kinks. Usually the vertebral bodies of the dog are lined up in a row - with the kink tail, one of the tail vertebrae does not have this classic rectangular shape, which changes the direction of the tail. This has extremely rare health consequences for the dog, but only has visual consequences. A kink can also occur due to an accident, for example if a dog has broken a vertebra.
Wedge vertebrae and block vertebrae can cause kinks in the tail
Now it's getting scientific: In the dog's body, muscles and ligaments ensure that the vertebrae hold together. If the pulling forces show different forces during the dog's development phase, i.e. there is a stronger pull on one side of the vertebra than on the other, the vertebra does not develop in its correct form. While normal bone formation (osteosynthesis) continues on one side, the other side of the vertebra no longer develops normally. Instead of a rectangular shape, this results in a trapezoid-like structure - doctors speak of a wedge vertebra.
In addition to the wedge vertebra phenomenon, a so-called block vertebra can also lead to a kink in the dog's tail - but this is less often the case. A block vortex does not always lead to a visible rod bend. It is an adhesion of two or more tail vertebrae. This error in the segmentation of the spine is usually accompanied by missing intervertebral discs. The result: vertebrae grow together and stiffen. In rare cases this can lead to a kinking tail. Talk to your veterinarian about spine damage, especially if your dog has symptoms, for more information.
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Can the kinking rod be dangerous?
As already mentioned above, the kinking tail is completely harmless in most cases. However, wedge and block vertebrae on the tail can also be accompanied by changes in the cervical and thoracic spine - this can then lead to health problems for the dog. If you want to be on the safe side, you can take your dog to the veterinarian if he has a rod misalignment and check whether the kinking rod is dangerous.