Three levels of urgency — and why the distinction matters

Knowing what to do when your hip hurts is not straightforward. Some hip pain settles within a few days and needs nothing more than rest and over-the-counter analgesia. Other hip pain signals something that will not wait — a fracture, a joint infection, or tissue damage that worsens the longer it goes untreated. The difficulty is that the symptoms do not always feel proportionate to their cause.

This article organises hip pain into three urgency tiers to help cut through that uncertainty:

• Emergency — call 999 or go to A&E immediately. Certain signs require same-day hospital care, regardless of how the pain started.
• Urgent — contact NHS 111 or your GP the same day. A smaller group of symptoms point to possible infection or acute structural injury that cannot safely wait.
• Non-urgent but serious — see your GP within days, or consider a specialist referral. Pain that has crossed a functional threshold needs assessment even when it is not an emergency.

Most hip pain sits in the third tier. But missing a red flag in the first two carries real consequences, particularly for older adults and anyone with a relevant health history. The sections below map each tier to specific signs rather than vague descriptions.

Call 999 or go to A&E: emergency hip red flags

Certain hip symptoms require immediate emergency care — call 999 or go to A&E without waiting for a GP appointment or NHS 111 triage.

• Sudden inability to bear weight after a fall or injury. This is the primary emergency signal, particularly in adults over 60. An inability to stand or walk following trauma should be treated as a possible hip fracture until proven otherwise.
• Visible deformity. If the leg appears shorter than the other, is rotated outward, or the hip joint looks out of place, go to A&E immediately. These signs suggest fracture or dislocation.
• Severe pain after trauma, even without obvious deformity. Undisplaced neck-of-femur fractures can appear normal or subtle on a plain X-ray, particularly in older patients and those with osteoporosis. This is not a situation to wait and see — high clinical suspicion after a fall is a reason to seek emergency assessment, not a reason to reassure yourself.
• Numbness or tingling in the hip, groin, or leg following an injury. Loss of normal sensation after trauma suggests possible nerve involvement and warrants same-day emergency review.
• Saddle-area numbness with sudden loss of bladder or bowel control. This combination points to cauda equina syndrome — a spinal emergency that can present with pain or numbness in the hip region. It is not primarily a hip condition, but it must not be mistaken for one; call 999 immediately.

If any of the above apply, do not drive yourself — call 999 or ask someone to take you to the nearest A&E.

Call 111 or seek same-day GP care: urgent warning signs

Below the 999 threshold sits a smaller group of hip symptoms that are uncommon but genuinely time-sensitive. These do not require an ambulance, but they should not wait for a routine appointment booked days away. If same-day GP access is unavailable, call NHS 111.

The principal concern at this level is septic arthritis — infection inside the hip joint itself. A hip that looks swollen and feels hot to the touch, especially alongside a raised temperature, chills, or a general sense of being unwell, should be assessed the same day. Joint infections can destroy cartilage within hours; early drainage and antibiotic treatment are time-critical in a way that routine hip pain is not.

Other urgent presentations include:

• Sudden severe hip pain that began without a fall, and feels different from any previous hip discomfort — this pattern warrants same-day triage.
• Skin discolouration around the hip combined with deep pain — a red, blotchy, or mottled appearance over the joint area is an urgent sign.
• Hip pain severe enough to wake you from sleep with a sudden or acute onset — clinical pathway guidance from the ACPA identifies this as a red flag requiring an urgent X-ray, not a wait-and-see approach.

These presentations are relatively rare, but if any of them fits what you are experiencing today, act today rather than waiting.

Book a GP appointment: serious signs that are not emergencies

Not every serious hip presentation is an emergency. A third tier of warning signs warrants a GP appointment — promptly, but not an ambulance.

If you have had a cancer diagnosis in the past

New or worsening hip pain in anyone with a previous cancer diagnosis should always be mentioned to a GP, regardless of how mild it feels. Bone metastasis can present as gradual hip pain before imaging changes become obvious, and it should be excluded before other explanations are assumed. This applies even if the original cancer was treated years ago.

Systemic features alongside hip pain

Unexplained weight loss, persistent night sweats, or prolonged fatigue occurring alongside hip pain are signals of possible systemic pathology rather than a straightforward mechanical problem. These features matter independently of how severe the hip pain actually is — a patient with relatively modest hip discomfort plus unexplained weight loss needs GP assessment sooner than the standard two-week rule below.

Night pain that regularly wakes you from sleep is a separate clinical red flag, distinct from the sudden-onset nocturnal pain covered in the previous section. Recurrent sleep disturbance from hip pain — particularly if it is a new pattern — should be reported to a GP rather than managed long-term with over-the-counter painkillers.

The NHS standard threshold

For mechanical hip pain without the features above, NHS guidance sets a clear threshold: see a GP if pain has not improved after two weeks of home care, if it is preventing normal daily activities, or if morning stiffness regularly lasts more than 30 minutes after waking. The 30-minute stiffness figure is a practical clinical marker — stiffness that clears quickly is typical of mechanical pain, whereas prolonged morning stiffness may suggest an inflammatory process.

Once GP-assessed, some of these patients will need onward referral to a hip specialist rather than continued GP management.

When to see a hip specialist rather than staying with your GP

Seeing a GP and seeing a hip specialist are two distinct steps, and the second does not require the first to have run its course. A GP's role at this stage is assessment, initial investigation, and triage; a specialist's role is precise structural diagnosis and a management plan built around what is actually happening inside the hip joint.

The functional thresholds that indicate specialist review include:

• Pain that has not shown a clear improving trend after a few weeks, despite appropriate rest, anti-inflammatories, or physiotherapy guidance — the absence of progress is itself diagnostic information.
• Difficulty with everyday loading tasks: climbing stairs, putting on shoes, rising from a chair without using the arms, or walking distances that were previously manageable.
• Mechanical symptoms — clicking, catching, grinding, or a sensation that the hip is giving way — suggest structural pathology (cartilage, labrum, or bony geometry) that typically requires imaging and clinical examination by someone who assesses hip joints routinely.
• A persistent limp, leg weakness, or altered gait that has continued beyond the first week or two of any acute episode.

The case for earlier specialist involvement also rests on what delayed assessment tends to produce. In hip osteoarthritis and in occult hip fractures, prolonged delay before definitive diagnosis is associated with joint deterioration — distorted anatomy, scar tissue, and a narrowed range of surgical options are well-documented consequences of waiting too long. Specialist assessment does not necessarily mean surgery is next; it means the available options are identified at a stage when more of them remain viable.

What a hip specialist assessment covers

A specialist hip appointment follows a consistent structure. The clinician begins with a focused history — onset, character, location, aggravating and relieving factors, functional impact — before moving to a physical examination of the hip joint's range of movement, impingement patterns, and load response. Any imaging already obtained (X-ray, MRI, or ultrasound) is reviewed in that clinical context rather than in isolation.

The differentiation between structural causes is central to what the clinician is doing. Femoroacetabular impingement is more common in younger and middle-aged adults and produces characteristic findings on impingement testing; hip osteoarthritis is typically diagnosed in patients over 45 with activity-related pain and morning stiffness that clears within 30 minutes. Neither diagnosis is made from a scan alone.

That last point is the one most patients find genuinely useful to hear. Structural changes on imaging — mild cam morphology, small labral signal change, early joint-space narrowing — appear in asymptomatic hips too. The specialist's role is to reconcile the scan with the clinical picture: does what the image shows actually explain what the patient feels? An X-ray report describes anatomy; a consultation determines whether that anatomy is the problem.

The output of a first appointment is a working diagnosis, a clear management plan, and an honest account of where the pathway may lead — from conservative care through to surgical options where relevant. That clarity is itself the reason to go: not because the hip has necessarily reached a threshold, but because knowing what is — and is not — driving the pain is where any useful plan has to start.

Lincolnshire Hip is part of the MSK Doctors group and accepts patients without a GP referral, with in-person appointments in Grantham and Sleaford and virtual consultations also available.

1. [1] Hip pain in adults – NHS. https://www.nhs.uk/conditions/hip-pain/ https://www.nhs.uk/conditions/hip-pain/