That sickening moment

You land awkwardly on the five-a-side pitch, your child comes off the trampoline clutching a wrist, or an icy pavement takes your feet from under you. Something hurts, it is starting to swell, and the question everyone around you is asking is the same one going through your head: is it broken?

Here is the honest truth up front: without an X-ray, nobody can be certain — not you, not a first aider, and often not an experienced clinician. But there are useful clues, and the first aid is identical either way, so you can act confidently before you know the answer.

Three injuries that look alike

  • A fracture means the bone itself has cracked or snapped. That covers everything from a fine hairline crack to a bone in several pieces. If bone has come through the skin, that is an open fracture — a genuine emergency.
  • A sprain means a ligament (the strap of tissue holding a joint together) has been stretched or torn. Mild sprains settle in a couple of weeks; a fully torn ligament can be every bit as painful and slow to heal as a break.
  • A strain means a muscle or tendon has been overstretched or torn — think a pulled hamstring. It is managed much like a sprain.

Clues that lean towards a break

None of these prove anything on their own, but the more of them you tick, the more likely an X-ray will show a fracture:

  • The limb or digit looks the wrong shape — angled, twisted or shorter than its partner on the other side
  • Putting weight through a leg is impossible, or the hand cannot grip at all
  • Pressing gently on one precise point of the bone produces sharp, well-localised pain
  • The swelling ballooned within minutes rather than creeping up over the evening
  • There is pins-and-needles, numbness, or pale or bluish skin beyond the injury
  • The person is older — bones become more fragile with age, so a modest fall can do more damage

Pain that centres on the joint, a joint that still moves through its range (however grumpily), some ability to take weight, and bruising that appears gradually all lean towards a sprain. But lean is the operative word — plenty of confirmed fractures started with "I can wiggle it, so it can't be broken." You can. Ignore that myth.

The first hour: what actually helps

Whatever the injury turns out to be, the same steps apply straight away:

  1. Stop. Come off the pitch, sit down, and resist the urge to "walk it off" or test the limb by forcing it to move.
  2. Support it. Keep the injured part still and comfortable — a cushion under an ankle, a makeshift sling for an arm.
  3. Cool it. Wrap ice or a bag of frozen sweetcorn in a tea towel and hold it on for 15 to 20 minutes at a time, with breaks between. Never put ice straight onto bare skin.
  4. Compress gently. A soft bandage can limit swelling. If fingers or toes beyond it go numb, tingly or pale, it is too tight — loosen it.
  5. Raise it. Getting the injury above heart level, where practical, helps drain swelling.

Paracetamol and ibuprofen (if they are safe for you) will take the edge off the pain. A word on modern thinking: total rest for days on end is no longer the advice for milder sprains. Once the initial pain settles, gentle early movement actually speeds recovery — protect the joint, but do not mothball it.

And what not to do: never pull on a deformed limb to "straighten" it, leave a boot on a badly swelling ankle rather than wrestling it off, skip the alcohol (it worsens swelling and hides pain), and hold off on hot baths or heat packs for the first couple of days.

Picking the right front door

Straight to A&E — or 999

Go to an emergency department without stopping to weigh options if the limb is obviously deformed, bone is visible, the skin beyond the injury is cold, white or blue, the pain is unbearable despite painkillers, or the injury involves the hip, pelvis, back or head. If the person cannot be moved safely or the injury came from a serious crash or a fall from height, call 999 instead.

An urgent treatment centre — usually the quicker option

For the classic everyday injuries — a suspected wrist or ankle fracture where the limb looks broadly normal, sprains, strains, a bent finger — an urgent treatment centre is generally the smarter destination. Most have X-ray machines, can fit splints and casts, and their queues move faster than a major A&E's. Our comparison of A&E versus urgent care walks through the differences, and you can compare live waits near you before you set off.

Stay home, watch and wait

If the swelling is modest, you can hobble on it, bruising is slow to appear and painkillers are doing their job, it is reasonable to manage the injury yourself for 48 hours and see how it trends. Not improving, or getting worse? NHS 111 can book you into the right service.

What the hospital visit looks like

Expect triage first, then an examination — the clinician will check movement, feeling and circulation beyond the injury, and press along the bone. If a fracture is plausible you will be sent round to X-ray, and the images decide what happens next: a cast or splint for a confirmed break, strapping and rehabilitation advice for a sprain. Fractures almost always come with a fracture clinic appointment a week or so later, where the position of the healing bone is checked.

A note about children

A child's skeleton contains growth plates — soft zones near the ends of bones where growth happens — and injuries there can be invisible on a first X-ray yet matter enormously for how the limb develops. Children also break bones in ways adults do not (greenstick fractures, where the bone bends and cracks on one side). Have a low threshold for getting a child's injury imaged, and read our guide on taking a child to A&E before you go.

Trouble signs during recovery

Most limb injuries heal uneventfully, but come back urgently if you notice:

  • Pain out of all proportion, especially under a cast — a tight, bursting, escalating pain can signal compartment syndrome, which needs surgery the same day
  • A hot, swollen, tender calf after a leg injury — a possible blood clot
  • Fever, spreading redness or discharge from any wound near the injury
  • A limb that still cannot be used weeks later, or a joint that keeps giving way — flag it to your GP or the fracture clinic rather than assuming it is normal

Our guide on what to do after your visit covers discharge instructions and follow-up in more detail.

The short version

  • You cannot rule a fracture in or out by eye — deformity, instant swelling and point tenderness raise suspicion, but only an X-ray settles it
  • Rest, ice through a cloth, gentle compression and elevation help every limb injury while you decide
  • Deformed limb, exposed bone, or a cold, pale hand or foot → A&E now; ordinary suspected breaks and sprains → an urgent treatment centre is usually faster
  • Reintroduce gentle movement early for mild sprains, and take escalating pain under a cast seriously
  • Check live waiting times before travelling — the nearest door is not always the quickest