Osteitis pubis: groin pain that needs an MRI, and sometimes a different answer.

If the scan shows inflammation, treat it. If the scan is clean and the pain goes on, the nervous system deserves a closer look.

This page is about understanding the condition and the role the brain and nervous system can play in it. It is not a diagnosis. Your own clinicians know your case.

What osteitis pubis is

The pubic symphysis is the cartilage joint at the front of the pelvis where the two pubic bones meet. Osteitis pubis is inflammation of that joint and the bone around it. It causes pain in the groin, the lower abdomen and the front of the pelvis, often worse with running, kicking, cutting, sit-ups, or getting out of a car. It is common in football, hockey and rugby players, where repeated pull from the adductor and abdominal muscles stresses the joint, and it can also occur after pelvic surgery or childbirth.

Diagnosis is based on tenderness directly over the symphysis, pain on resisted adduction (squeezing the knees together), and imaging. MRI is the key test: it can show bone marrow oedema (swelling in the bone), fluid in the joint and surrounding soft-tissue changes. Treatment is rest from the aggravating sport, a graded strengthening programme for the hip and core, sometimes injections, and in rare cases surgery.

The neuroplastic contribution

The ATNS Index of Neuroplastic Symptoms says assessment for neuroplastic symptoms should be done as part of a complete evaluation of osteitis pubis, particularly if there is no evidence of inflammation on MRI of the pubic symphysis.

Neuroplastic symptoms are real symptoms produced by learned pathways in the brain and nervous system, a sensitized alarm system, rather than by ongoing damage or inflammation in the tissue. They are not imaginary and not weakness. Because the brain can change, they are reversible. In groin pain, the nervous system contribution shows up in a few ways:

• A diagnosis of osteitis pubis is sometimes given on clinical grounds alone. If the MRI is clean, the inflamed tissue the name implies may not be there, and the pain is being generated elsewhere.
• After genuine inflammation has settled, the pain pathway can keep firing. The brain learned that kicking hurts, and it keeps predicting hurt.
• Fear of re-injury, loss of identity for an athlete, and pressure to return to play all raise threat, which keeps the alarm sensitized.

The fear-avoidance cycle is common in athletes with long-standing groin pain, and so is the boom and bust cycle of pushing hard in training then being laid up for days.

What the research shows

The research on osteitis pubis is mostly about imaging and sports medicine. No study has tested a neuroplastic contribution directly, but the imaging studies say a lot about how loosely scans and pain are linked.

• A review of osteitis pubis in elite athletes describes it as a common source of groin pain, attributes it to microtrauma from repeated muscle pull on the pubic bones, and outlines conservative and surgical treatment. It is a useful summary of the mechanical model.
• A retrospective MRI study of professional football players diagnosed with osteitis pubis graded bone marrow oedema, joint fluid and surrounding oedema and compared these findings with clinical outcome.
• A study of an elite junior soccer squad found moderate to severe bone marrow oedema at the pubic symphysis in 11 of 18 players who had no symptoms, and concluded the finding was only weakly related to later osteitis pubis.
• A study of ice hockey and soccer players found bone marrow oedema in 65% of athletes without symptoms during heavy training, compared with 88% and 100% of athletes treated for osteitis pubis, a difference that was not statistically significant.

So oedema on MRI is common in hard-training athletes who feel fine, and a scan alone cannot tell you whether it is the source of pain. Why some people keep hurting after the bone settles has not been studied directly; a sensitized nervous system is a reasonable inference from wider pain science, not a demonstrated finding here.

Signs the nervous system may be part of the picture

• MRI showed little or no inflammation at the pubic symphysis.
• Pain has lasted far longer than the expected recovery period despite following rehab.
• Pain has spread to the hip, lower abdomen, testicle, or the other side.
• Pain is present at rest or at night, not only with sport.
• You are afraid to sprint or kick, and have been avoiding it even when cleared to try.

A solution that addresses it

There is an approach that addresses the brain's contribution to pain. Often called pain reprocessing, it combines education about neuroplastic symptoms, somatic tracking (observing groin sensations with curiosity rather than alarm), reducing the sense of threat around movement, a graded return to sprinting, kicking and sport, emotional awareness and expression, and acceptance and commitment skills. Trained clinicians deliver it, and digital programs are increasingly available.

Cindra is a daily AI companion built around these approaches, with daily check-ins, short practices and plain-language lessons for people whose symptoms have a neuroplastic component. If your groin pain has outlasted its scan, you can join the waitlist. For the underlying science, see why chronic pain persists.

What to do next

First, get the structural picture clear. Ask whether you have had an MRI of the pubic symphysis and what it showed. Make sure other causes of groin pain have been considered: adductor tendon injury, inguinal hernia or sports hernia, hip impingement, stress fracture of the pubic ramus, and in men, testicular causes. Follow the rehab programme you have been given.

Second, if the MRI is clean or the recovery is not following the expected course, ask your clinician whether a sensitized nervous system could be contributing. This is the assessment the ATNS index recommends.

Third, if it fits, start practising. Reintroduce feared movements gradually, work on understanding that hurt is not harm, and address the pressure and fear around returning to sport directly rather than pushing through them.

Seek prompt medical attention for fever with pelvic pain, pain after a fall or sudden pop, inability to bear weight, a lump in the groin, or testicular pain and swelling.

This article is for general education and is not medical advice, and it does not diagnose or treat any condition. Persistent symptoms deserve a proper medical assessment to rule out disease or injury before a neuroplastic explanation is considered. If your symptoms are new, changing, or come with red-flag signs such as fever, unexplained weight loss, numbness or weakness, chest pain, or loss of bladder or bowel control, see a clinician promptly.