Symptoms that should prompt referral beyond the GP

There is a point at which waiting becomes the wrong clinical strategy — and for hip and groin pain in women, that point arrives earlier than many GPs recognise.

Non-urgent but clear referral triggers include mechanical symptoms — a catching, locking, or clicking sensation deep in the groin crease — which suggest labral pathology and warrant orthopaedic assessment regardless of how long symptoms have been present. Pain that causes a limp, pain that consistently limits everyday activities, and hip pain in a younger adult with a history of childhood hip problems or suspected dysplasia all justify escalation after 6–12 weeks of structured physiotherapy without meaningful improvement.

Age bias is a documented barrier here. Young women are routinely told they are 'too young for hip problems', yet FAI syndrome accounts for the final diagnosis in over half of young adults referred from primary care with chronic, misdiagnosed hip pain. Prolonged holding on a conservative pathway without reassessment is not neutral — it carries a risk of ongoing cartilage damage.

Urgent or emergency triggers are a separate category entirely and should not wait for a staged pathway. Inability to bear weight, severe pain waking the patient at night, signs of infection (fever, redness, chills), sudden onset of intense pain, or a palpable lump in the groin require same-day GP assessment or emergency attendance, not a referral letter.

Why women wait longer for a correct diagnosis

Thirty-two months is the average time between a woman developing symptoms of a labral tear or FAI and receiving a correct diagnosis — during which she will typically have seen four separate clinicians and tried more than three treatments. Understanding why that gap exists is not about apportioning blame; the diagnostic difficulty is genuine.

The first problem is anatomical misdirection. FAI and labral tears produce pain deep in the anterior groin crease — what patients often describe as an ache or sharp catch at the front of the hip joint, sometimes referred into the inner thigh. This is not the lateral hip pain most people associate with 'hip trouble'. When a young woman presents to her GP with groin pain, the anatomy quite reasonably directs attention toward gynaecological structures first. Endometriosis, pelvic floor dysfunction, and ovarian cysts all occupy overlapping territory and can produce strikingly similar symptom patterns. Where bowel or urinary symptoms are also present, excluding gynaecological or colorectal pathology is the clinically correct first step — the difficulty is that pelvic floor dysfunction and FAI can coexist, each partially masking the other.

The second problem is examination. High joint flexibility — more common in women — can produce a falsely normal range of motion on clinical testing. A hip that moves freely in all directions does not draw clinical suspicion, even when structural pathology is present at the end of that range. Without a targeted impingement screen, the examination may generate false reassurance.

These two factors compound each other: the pain looks gynaecological, the joint moves normally, and the imaging requested is often a pelvic ultrasound rather than hip-specific views. FAI syndrome accounts for over half of confirmed diagnoses in young adults with chronic, previously unexplained hip pain — yet it consistently falls to the bottom of the differential.

Clinical tests a GP or physio can use to accelerate referral

Three bedside tests can change the referral calculus entirely — and none of them requires specialist equipment.

FADIR (Flexion-Adduction-Internal Rotation) is the most clinically useful screen for anterior impingement and labral injury, with approximately 95–100% sensitivity. The test involves passively flexing the hip to 90°, then adding adduction and internal rotation to reproduce the patient's familiar groin crease pain. A positive result in a young woman with mechanical symptoms — catching, clicking, or a deep anterior ache — should lower the threshold for referral substantially, rather than extending the conservative phase.

FABER (Flexion-Abduction-External Rotation) and the anterior impingement test carry specificity above 90% for intra-articular hip pathology. High specificity matters here: a positive finding is unlikely to be a false alarm, making it a useful tool for GPs and physiotherapists working within time-pressured triage consultations.

Two things are worth being clear about. First, a positive FADIR does not confirm a labral tear — it confirms that imaging and specialist review are warranted. Holding a patient on conservative management after a positive impingement screen, without documenting findings or escalating, is where diagnostic delay compounds. Second, these are not specialist-only tools. Physiotherapists conducting MSK triage are well-placed to apply and record them; a referral letter that includes documented FADIR findings gives orthopaedic teams and commissioners the clinical justification to fast-track review, rather than treating the referral as routine.

The NHS referral pathway and where private assessment fits

For most women navigating the NHS, the pathway to specialist assessment follows a fixed sequence: 10–12 weeks of structured physiotherapy and activity modification; if symptoms persist, referral to MSK triage; X-ray as the initial imaging step (though standard plain films frequently appear normal in younger adults with FAI morphology); MRI arthrogram if clinical suspicion remains; and finally specialist surgical assessment if commissioning criteria are met.

Formal NHS ICB criteria — which vary between commissioners, so patients should ask their GP which apply locally — typically require all of the following before a specialist surgical referral will be funded: at least six months of failed conservative care, radiological confirmation of labral pathology or FAI morphology, and severe hip or groin pain limiting daily activities across that period. Eligibility is generally restricted to patients aged 18–50. These thresholds exist because a meaningful proportion of patients do improve with structured conservative management. The practical consequence, however, is that a woman with positive impingement testing and progressive functional loss may still face a six-month holding period before commissioning criteria are technically satisfied — even when the clinical picture points firmly toward structural pathology.

Private pathways remove the mandatory conservative phase. Imaging and specialist assessment can be arranged considerably earlier, which has genuine clinical relevance when symptoms are progressing rapidly or daily activities are significantly disrupted. That earlier access carries a real financial cost — private consultations, MRA imaging, and any downstream procedures are not inexpensive — and private assessment is not inherently clinically superior to an NHS pathway that is actively progressing. It is, simply, a faster route to the same specialist opinion.

What imaging can and cannot tell you

Imaging is a tool for confirming clinical suspicion — not a mechanism for ruling it out.

Standard pelvic X-rays are poorly suited to detecting FAI morphology in younger adults because the joint space typically appears preserved before cartilage wear has progressed; specialist views including the Dunn projection and false profile are needed to identify cam or pincer deformities. Even then, X-ray shows bone, not soft tissue.

Conventional MRI performs better in focused cohorts — some studies report 100% sensitivity for labral tear in confirmed FAI populations — but sensitivity falls sharply when the net is cast wider. In a 2025 surgical series of 167 patients undergoing hip arthroscopy with periacetabular osteotomy, 91% of whom were women, MRI sensitivity for labral tear was only 67.3%, with specificity of 36.2%. Sixty-six per cent of patients whose MRI was read as negative still had a tear confirmed at arthroscopy. A normal MRI result is not a reliable basis for closing the diagnostic pathway. MRI arthrogram (MRA), which involves injection of contrast into the joint, improves matters — sensitivity around 70%, specificity around 75% — and is the preferred modality for pre-referral planning when clinical examination is strongly positive. Where doubt remains after MRA, hip arthroscopy is the diagnostic gold standard.

The broader clinical principle matters here: imaging findings are one input, interpreted alongside examination findings and symptom history. A structural finding on MRI is not itself an indication for surgery; equally, a structurally unremarkable scan does not invalidate a convincing clinical picture.

What to do when the pathway keeps stalling

A negative or inconclusive MRI is not, on its own, grounds for continuing to wait. When mechanical symptoms — catching, locking, progressive groin crease pain — remain significant and clinical examination is convincingly positive, the appropriate response is specialist review, not a further cycle of conservative holding.

Practically, women can request a direct MSK referral from their GP rather than repeating physiotherapy that has not resolved symptoms. Documenting the timeline clearly strengthens that case: how long symptoms have been present, which treatments have been tried and for how long, and whether FADIR or FABER testing was performed and what it found. NHS commissioning criteria are structured around demonstrating at least six months of failed conservative care — where that threshold is reached, a GP can refer directly to MSK or orthopaedic services.

One specific context merits explicit mention. Acetabular labral tears are a documented cause of hip pain in the postpartum period — confirmed in a 2012 study — yet the presentation is routinely attributed to delivery-related strain and not pursued further. Women who develop deep groin ache, clicking, or pain on hip flexion after childbirth should raise labral pathology as a possibility directly with their GP, rather than assuming it will be considered.

When specialist assessment does take place, it should include a full symptom history, clinical impingement testing, and, if not already arranged, MRI arthrogram rather than standard MRI, given the limitations of conventional scanning in this population.

For women in London whose pathway has stalled, specialist hip assessment at London Cartilage Clinic on Harley Street is accessible through a private pathway, without the requirement to complete the full NHS conservative phase first — further information is available at londoncartilage.com.

1. [1] Reliability of Conventional Hip MRI in Detecting Labral Tear and Labrocartilagenous Lesions in FAI (2023). (2023). https://doi.org/10.2174/1573405619666230306095522 https://doi.org/10.2174/1573405619666230306095522
2. [2] MRI Has a Low Sensitivity and Specificity for Accurate Diagnosis of Labral Tear for Patients Undergoing HA+PAO (2025). (2025). https://doi.org/10.1093/jhps/hnaf011.087 https://doi.org/10.1093/jhps/hnaf011.087