Pubic Symphysis Dysfunction

That sharp, grinding pain at the front of your pelvis when you swing your legs out of the car, roll over in bed or step up onto a kerb. If that sounds familiar, you may be dealing with pubic symphysis dysfunction (PSD). It is one of the most uncomfortable forms of pregnancy pelvic pain, and it can show up as early as the first trimester.

The good news is that PSD is well understood, and there is a lot you can do to settle it down without waiting nine months for relief.

What is the pubic symphysis?

The pubic symphysis is a small cartilaginous joint that connects the two halves of your pelvis at the front, just below the lower abdomen. Unlike a typical hinge joint, it is not designed for much movement. A thick fibrocartilaginous disc sits between the two pubic bones, held tight by four ligaments above, below, in front and behind.

In a non-pregnant body, the joint sits at around 4 to 5 millimetres of width and stays there. During pregnancy, hormones soften the disc and ligaments and the joint widens by an additional 2 to 3 millimetres. That extra play is normal and helps your pelvis open during labour. It only becomes a problem when the joint becomes irritated, unstable or asymmetrically loaded.

Is this the same as pelvic girdle pain?

Not quite, and the distinction matters.

Pelvic girdle pain (PGP) is the umbrella term for pregnancy-related pain anywhere across the pelvic ring. That includes the sacroiliac joints at the back, the pubic symphysis at the front, or both at once. PSD specifically refers to dysfunction of the pubic joint at the front. So PSD is best thought of as a subtype of PGP, the anterior version, with its own pain pattern and management nuances worth understanding on their own.

If your pain wraps across the back of your pelvis or radiates into your buttocks, the broader pelvic girdle pain picture is probably more relevant for you. If your symptoms sit clearly in the front, this article is for you. And if you are unsure whether the pain is at the back or somewhere in between, the SI joint pain article covers the posterior side.

What does PSD feel like?

PSD has a fairly distinctive symptom pattern:

Sharp or burning pain right over the pubic bone, often pinpoint
Pain that radiates down into the inner thigh or perineum
A clicking, grinding or popping feeling at the front of the pelvis
Pain that flares with single-leg loading: stairs, getting in or out of a car, putting on trousers or rolling over in bed
A waddling walking pattern, especially later in the day
Pain that aggravates when you stay on your feet too long, then stiffens up after rest

Many women describe the pain as the kind that “stops you mid-step.” It often becomes the limiting factor in everyday tasks well before any back pain does.

Why it happens

A few mechanisms come together to make the pubic symphysis vulnerable in pregnancy.

Hormones. Relaxin and progesterone start softening the pelvic ligaments from as early as 10 weeks. The fibrocartilaginous disc inside the joint also remodels. The joint becomes more mobile by design, but more mobile also means more easily irritated.

Asymmetric loading. When one hip is tighter than the other, or when one sacroiliac joint is moving more than its partner, the pubic symphysis at the front gets pulled unevenly. The two pubic bones can end up shearing against each other rather than gliding cleanly. That shearing is what produces the click and the sharp pain.

Prior pelvic injury or hypermobility. Women with a history of pelvic trauma, generalised hypermobility, or previous pregnancies with PGP or PSD are at higher risk of it returning, often earlier and more severely.

Mechanical demand. As your bump grows, your centre of gravity shifts forward and your gait widens. The adductor muscles that pull on the pubic bone work harder, and that constant tug on an already softened joint adds to the irritation.

When dysfunction becomes diastasis

Most PSD is a problem of irritated movement, not structural separation. Occasionally, the joint can separate beyond the normal range, and that is called pubic symphysis diastasis. Diastasis is defined as a joint width over 10 millimetres on imaging.

True diastasis is rare. Reported rates range widely, from about 1 in 600 to 1 in 30,000 deliveries depending on the population and how rigorously it is investigated. It tends to happen during a difficult or rapid delivery, particularly with a large baby or a precipitous second stage.

The signs that should prompt urgent assessment after birth are:

A sudden, audible pop during delivery followed by severe pubic pain
Inability to weight-bear or to lift either leg in bed
A waddling gait that does not improve in the first day or two postpartum
Bruising or swelling over the pubic bone
Bladder symptoms or pain referred into the groin and back

Most cases settle with several weeks of conservative care, including rest, a pelvic binder and graded mobilisation. Surgery is reserved for separations beyond about 4 centimetres or when conservative care fails.

What the research says

The evidence base for PSD specifically is smaller than the literature on broader PGP, but it is consistent on the main points.

A 2021 set of practical guidelines published in the Journal of Clinical Medicine by Stolarczyk and colleagues confirmed that conservative care should be the first line of treatment for peripartum pubic symphysis problems, with imaging reserved for suspected diastasis and surgery for severe cases that do not respond.

Howell’s case series in the Journal of the Canadian Chiropractic Association (2012) followed two pregnant patients with PSD through chiropractic management. Both reported pain reductions from severe to mild within four to six visits, with treatment combining gentle mobilisation, soft tissue work, pelvic blocking and a support belt.

The 2020 systematic review by Weis and colleagues in the Journal of Manipulative and Physiological Therapeutics examined 50 studies covering pregnancy-related back, pelvic girdle and combination pain. They found favourable evidence for manual therapy interventions across this population, including the subgroup with anterior pelvic pain.

The European Guidelines for the Diagnosis and Treatment of Pelvic Girdle Pain (Vleeming et al., 2008) remain the most cited reference for clinical management. They explicitly include the pubic symphysis as part of the pelvic girdle that should be assessed and treated together rather than in isolation.

How chiropractic care can help

The goal of treatment for PSD is rarely to “put the joint back” because there is nothing structurally out of place in most cases. The goal is to reduce the asymmetric loading, calm the irritated joint and improve the way the pelvis moves as a whole.

Care typically includes:

Gentle pelvic mobilisation. Restoring symmetric movement at the sacroiliac joints often takes the shearing strain off the pubic symphysis at the front. The adjustments are low-force, side-lying or with pregnancy pillows so there is no pressure on the bump.

Soft tissue work on the adductors and iliopsoas. These muscles attach close to the pubic bone and tend to grip down hard around an irritated joint. Releasing them gives the joint room to settle.

The Webster Technique. A chiropractic protocol developed for pregnancy that focuses on reducing sacral restrictions and balancing the pelvic ligaments. It is well tolerated and used widely in prenatal chiropractic care.

Pelvic support belt fitting. A correctly positioned belt sits low across the hips, supporting the pubic joint without compressing the abdomen. Many women find it gives immediate relief during walking.

Movement guidance. Small changes to how you move during the day often make a bigger difference than any single treatment. Your chiropractor can help you find the modifications that take pressure off the joint.

What you can do at home

Most of these strategies are simple, but they need to be applied consistently to work.

Keep your knees together. When you roll over in bed, get out of the car or move from sitting to standing, keep your knees pressed together. Single-leg movements are the ones that aggravate PSD most.
Sit to dress. Putting on trousers or shoes while standing on one leg is one of the worst PSD triggers. Sit down for it.
Choose swimming over walking. Water takes the gravitational load off the joint while still letting you move. Long walks can flare PSD up by lunchtime.
Use a pillow between your knees at night. This keeps the pelvis aligned through the night and reduces morning stiffness.
Try a support belt. Worn during walking and standing, not while sitting at rest.
Ice when it flares. A cold pack on the pubic bone for 10 to 15 minutes after activity helps settle inflammation. Avoid heat directly on the joint.
Modify pelvic floor work. Gentle pelvic floor activation is helpful, but avoid heavy bracing or wide-stance squats while you are symptomatic.

When to get help

If your symptoms are getting in the way of walking, sleeping, working or caring for older children, do not wait for the third trimester to seek help. PSD that is left to build over weeks tends to bring along compensatory patterns at the back of the pelvis and lower back, and those take longer to resolve afterwards.

Get assessed sooner if you experience:

Severe pain you cannot weight-bear through
Pain that has not improved with rest, position changes or a support belt
Numbness or tingling into your legs
Postpartum: a clear feeling that something is not right at the front of your pelvis, or a leg-length difference that did not exist before delivery

You do not have to wait it out

The idea that PSD is just part of pregnancy and will fix itself when the baby comes is partly true and mostly unhelpful. The hormonal influence drops sharply after birth, and most cases settle within weeks postpartum. There is no reason to spend the second half of your pregnancy in pain when targeted, gentle care can give you most of your function back inside a handful of visits. If you are returning to training afterwards, the postpartum exercise guide walks through how to do it without flaring old pelvic symptoms.

If you are dealing with sharp pain at the front of your pelvis, get in touch or book an appointment.

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