Causes of a Broken Tailbone
Causes of a Broken Tailbone most commonly involve direct trauma to the lower back or repetitive stress to the coccyx. The leading causes of a broken tailbone include falling backwards onto a hard surface, childbirth, repetitive strain from certain activities, and in rare cases, bone diseases or tumours. Understanding the cause helps tailor treatment and prevent further injury.
Falling onto the buttocks is by far the most common cause. This may happen during sports, slipping on wet floors, icy pavements, or accidents involving steps or stairs. The force of the fall travels through the buttocks and directly impacts the coccyx, often causing a fracture or dislocation.
Childbirth can also lead to tailbone injury. During delivery, the baby’s head may push against the coccyx, stretching or even dislocating it. Women with narrow pelvic outlets or prolonged labour are at higher risk.
Repetitive activities like rowing, cycling, or horse riding can lead to stress on the coccyx. Over time, microtrauma from constant pressure and motion can cause inflammation, bruising, or even fracture — particularly in people with poor posture or insufficient cushioning.
Car accidents and other high-impact trauma can also fracture the coccyx, especially when seatbelts don’t distribute force properly. Sudden stops or backward jolts may slam the coccyx against the seat, resulting in injury.
Causes of a Broken Tailbone
Other less common causes include bone thinning from osteoporosis, which increases the likelihood of fractures from minor bumps. Tumours or infections in the spine may also weaken the area and make the tailbone more prone to breaking.
Being overweight or underweight can also contribute. Excess weight puts additional pressure on the coccyx when sitting, while very thin individuals may lack the necessary fat padding to protect the bone.
Knowing the causes of a broken tailbone helps in diagnosis, recovery, and prevention. Simple measures such as using proper seating, fall-proofing your home, and strengthening core muscles can reduce the risk of future injury.
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