Falling on your bum usually results in a bruised or fractured tailbone (coccyx), the small triangular bone at the very bottom of your spine. Most falls cause nothing more than a deep bruise that heals on its own in a few weeks, but harder impacts can crack or dislocate the tailbone, leading to pain that lasts months. The severity depends on the surface you landed on, how fast you fell, and your body composition.
What the Impact Does to Your Body
When you land on your backside, the force travels through the soft tissue of your buttocks and concentrates on the coccyx. This bone is small, slightly curved, and not well-protected by muscle the way your hip bones are. A mild fall compresses the fat and muscle tissue, causing a deep bruise. A harder fall can fracture the coccyx itself or push it out of its normal alignment, which is called a dislocation.
Beyond the tailbone, the surrounding structures absorb shock too. The sacrum (the broad, flat bone just above the tailbone) can bruise, and the ligaments connecting these bones can stretch or tear. In some cases, the jolt travels up the spine and causes lower back soreness for several days, even if the tailbone itself is fine.
Bruise vs. Fracture: How to Tell
A bruised tailbone and a fractured one feel remarkably similar, which makes them hard to tell apart without imaging. Both cause sharp pain when sitting, tenderness when you press the area, and discomfort during bowel movements. The key difference is intensity. A bruise typically produces moderate pain that improves noticeably within the first week or two. A fracture causes severe pain that lingers well beyond a month.
If pain stays severe or isn’t improving after four weeks, that’s the point where an X-ray is usually warranted. X-rays can reveal a break or displacement. If the X-ray is inconclusive, an MRI provides a more detailed picture of both the bone and the soft tissue around it. There’s no reliable way to self-diagnose a fracture at home based on symptoms alone.
Nerve-Related Symptoms
The tailbone and sacrum sit near several important nerves, including the pudendal nerve, which runs through the pelvis and serves the buttocks, genitals, and the area between them. A hard fall can irritate or compress this nerve, producing burning pain, tingling, or numbness in those areas. This condition, called pudendal neuralgia, sometimes develops days or weeks after the initial injury rather than immediately.
Sciatica-like symptoms are also possible. If the impact shifts or inflames tissue near the sciatic nerve roots, you may feel shooting pain, tingling, or weakness radiating down one or both legs. These nerve symptoms are less common than simple bone bruising, but they’re worth paying attention to because they signal a more significant injury.
Who Gets Hurt More Easily
Tailbone pain is about five times more common in women than men. Female pelvises are wider, which positions the coccyx in a more exposed spot during a backward fall. Adolescents and adults are more prone than children, partly because children have more flexible cartilage in the coccyx that absorbs force better.
People with less padding over the tailbone, whether from low body fat or age-related muscle loss, tend to experience worse injuries from the same fall. Sitting on a hard surface like ice, concrete, or wooden stairs concentrates force more than landing on carpet or grass.
What Recovery Looks Like
A straightforward bruise typically resolves within two to four weeks. Fractures and dislocations take longer, often eight to twelve weeks, and occasionally several months. During this time, the main challenge isn’t staying still. It’s sitting. Every time you sit down, your body weight presses directly on the healing bone, which is why recovery can feel frustratingly slow.
For the first few days, ice applied to the area for 15 to 20 minutes at a time helps reduce swelling. After the initial swelling subsides, some people find alternating between ice and gentle warmth more comfortable. Over-the-counter pain relievers can take the edge off, and stool softeners help avoid straining during bowel movements, which puts direct pressure on the coccyx.
Making Sitting Bearable
The single most useful thing during recovery is a cushion that keeps pressure off your tailbone. The classic option is a wedge or U-shaped cushion with a cutout at the back, so your coccyx hovers over empty space instead of pressing against the seat. These are widely available, but people have found surprisingly creative alternatives that work just as well.
A U-shaped travel neck pillow placed on a chair works in a pinch. Some people roll a towel or pool noodle into a U shape and sit on that. One practical trick: if you’re using a soft cushion on an already-soft chair, place a rigid board underneath so the cushion doesn’t compress and defeat the purpose. The goal is always the same: distribute your weight onto your thighs and sit bones while the tailbone area stays suspended.
Leaning slightly forward when you sit also shifts weight away from the coccyx. Standing desks, or alternating between standing and sitting throughout the day, can make a significant difference during the weeks when sitting is most painful.
When a Fall Causes Lasting Problems
Most people recover fully, but some develop chronic tailbone pain called coccydynia. This happens when the bone heals in a slightly displaced position, when scar tissue irritates surrounding nerves, or when the ligaments around the coccyx remain unstable. Chronic coccydynia means pain that persists beyond the normal healing window and flares up with prolonged sitting, standing up from a seated position, or leaning back.
If pain hasn’t resolved after a few months, a healthcare provider can examine the area more closely. Treatment for persistent cases ranges from physical therapy focused on the pelvic floor muscles to targeted injections that reduce inflammation around the coccyx. Surgery to remove part of the tailbone exists but is rare and reserved for cases that don’t respond to anything else.
Warning Signs After a Fall
Most tailbone injuries are painful but not dangerous. A few symptoms, however, point to something more serious. Sudden numbness, tingling, or weakness in one or both legs suggests nerve involvement that needs prompt evaluation. Loss of bowel or bladder control, even partial, is a red flag for significant nerve compression. A sudden spike in pain or swelling days after the injury, rather than gradual improvement, also warrants medical attention. Prolonged constipation that doesn’t respond to dietary changes or stool softeners can indicate that the injury is affecting nerve function in the pelvis.