Broken back, also known as spinal fracture or vertebral fracture, is one of the most devastating and unfortunately common traumatic injuries in domestic rabbits. This catastrophic injury typically occurs when a rabbit kicks out powerfully with its hind legs while being improperly restrained or when startled by a sudden fright. The rabbit's uniquely powerful hindquarters, combined with a relatively fragile skeletal structure, create a dangerous combination that can result in the spine snapping, most commonly in the lumbar region. This injury is particularly tragic because it is almost entirely preventable through proper handling techniques and stress reduction.
The mechanism of injury relates directly to rabbit anatomy and natural behavior. Rabbits possess extraordinarily powerful hind leg muscles designed for explosive escape responses from predators. These muscles attach to a skeleton that is surprisingly delicate, comprising only about 7-8% of body weight compared to 12-13% in cats. When a frightened rabbit attempts to flee or kicks out while being held incorrectly, the force generated by the hind legs can exceed what the lumbar vertebrae can withstand. The resulting fracture typically occurs between the fourth and seventh lumbar vertebrae, often causing immediate and irreversible damage to the spinal cord.
The impact of a broken back on a rabbit's health is immediate and severe. Spinal cord damage at the lumbar level results in complete or partial paralysis of the hindquarters, loss of bladder and bowel control, and significant pain. Unlike some other species, rabbits have very limited capacity for spinal cord healing, and the prognosis for rabbits with complete spinal cord transection is grave. Even with intensive supportive care, quality of life considerations often lead veterinarians and owners to the difficult decision of euthanasia. Secondary complications including urine scald, pressure sores, GI stasis from stress and immobility, and infection further complicate any attempt at management.
While treatment options exist for some cases of spinal injury, prevention remains the cornerstone of addressing this condition. Every rabbit owner must learn proper handling techniques, and every household member or visitor who interacts with rabbits must understand the critical importance of supporting the hindquarters and never allowing a rabbit to kick freely while being held. Rabbit-savvy veterinary care is essential for any suspected spinal injury, as proper assessment requires expertise in rabbit medicine and honest discussion of prognosis and quality of life. The emotional toll of this injury on rabbit owners is significant, making education and prevention all the more important.
