Tailbone pain: causes and sitting comfortably.

What the tailbone is

The tailbone, or coccyx, is the small triangular bone at the very base of your spine. The medical term for pain in this area is coccydynia. It is made of three to five small fused segments and sits below the sacrum, where it takes load when you sit and where several pelvic floor muscles and ligaments attach.

Despite being small, it can be surprisingly painful. Tailbone pain commonly makes sitting, driving, cycling and even lying on your back uncomfortable, and it can be slow to settle because the area is load-bearing every time you sit down.

Common causes

Tailbone pain usually has one of a few explanations. Identifying which one applies to you shapes how it is managed.

Causes worth knowing about

• A direct fall onto the base of the spine, which is the most common cause
• Childbirth, where the coccyx can be strained or move as the baby passes
• Sitting for long periods on a hard or poorly shaped seat
• Repeated pressure from cycling or rowing
• A change in the angle of the coccyx, which can be assessed on imaging
• Referred pain from the pelvic floor muscles or from the lower back
• Less commonly, arthritic change, infection or a bony injury

How it is usually described

People often describe a sharp or aching pain right at the base of the spine. It is typically worse when sitting, when moving from sitting to standing, or when sitting on a hard surface. Some people find the pain is worse leaning back, because that increases the load on the coccyx, while others find leaning forward relieves it.

Getting an accurate description of when the pain is better and worse is genuinely useful, because it points towards how the area is being loaded.

How to sit more comfortably

You cannot avoid sitting, so the practical goal is to reduce the load through the tailbone rather than the whole area. A few adjustments help most people.

Practical sitting changes to try

• Lean slightly forward rather than slouching back, so your weight is taken through your thighs and sit bones
• Use a cushion with a cut-out or a wedge that removes pressure under the coccyx
• Shift position regularly rather than staying in one posture for long periods
• Take standing breaks every 30 to 45 minutes, especially at a desk
• Adjust your car seat so you are not reaching or leaning back onto the tailbone
• For cycling, review saddle angle and padding, which is often the single biggest factor

What else usually helps

Beyond sitting changes, a graded approach focuses on the surrounding muscles, the lower back and the pelvic floor, and on gradually returning to the activities you have been avoiding.

Assessment often looks at whether there is muscle tension, guarding or weakness around the pelvic floor and hips. In many cases, addressing these areas reduces the load on the coccyx and improves symptoms over time, even when the bone itself has not changed.

How it is assessed and treated

A physiotherapist or other qualified health professional will take a history, including any fall or childbirth, and examine how you sit, stand and move. In some cases imaging is arranged, but tailbone pain is often managed without it.

Treatment usually combines practical advice, manual therapy where appropriate, a graded return to activity, and sometimes a cushion or support to keep you comfortable while the area settles. Surgery for the coccyx exists but is uncommon and reserved for specific cases.

When to seek advice

Seek an assessment if the pain has not settled after a few weeks, if it is preventing you from working or sleeping, if it followed a fall and is not improving, or if you are avoiding activities you want to return to.

Seek urgent medical attention if you have numbness around the groin or saddle area, difficulty controlling your bladder or bowels, severe pain after a significant fall, or pain with fever. These symptoms need prompt medical review rather than a physiotherapy enquiry.

Getting help on the North Shore

If you are around Lindfield or the surrounding North Shore suburbs and tailbone pain is affecting how you sit and move, start with an enquiry that describes the activity that has changed and your preferred timing. A qualified health professional confirms assessment and treatment with you directly.