Myth Busting Monday: Pop a Dislocated Joint Back In Yourself?

2nd November 2026

Written by Stephanie Austin, Owner and Lead Trainer, Prima Cura Training | Last reviewed: November 2026  |  Next review: November 2027

No. Forcing a dislocated joint back into place can stretch or trap the nerves and blood vessels that run past it, and it can make a fracture nobody knew was there considerably worse. The right first aid is to support the joint in the position you find it, keep the person still, and get them to A&E, where it can be X-rayed and put back with proper pain relief.

MYTH

“Pop it back in and it’ll feel better straight away.” The touchline, playground and car park reflex, usually from someone who once watched it done in a film.

FACT

Never try to force a dislocated joint back into place yourself. A dislocation can hide a broken bone, the muscles around it go into spasm, and the nerves and blood vessels running past the joint can be stretched or trapped. NHS advice for a dislocated shoulder is to go to A&E as soon as possible and not to try to put the arm back in yourself. Keep it still, support it, and get urgent medical help.

Sunday morning, 5 a side football. Two players go for the same ball; one of them lands badly on an outstretched arm, and he gets up holding it tight against his chest. The shoulder has a strange flat look to it where the rounded bit should be.

Within about ten seconds, somebody on the touchline has an opinion.

“I’ve seen this done. Lie down, I’ll pop it back in for you.”

It’s said with total confidence, usually by someone who means well and has never done it in their life. The evidence is a film, a clip online, or a mate who swears his shoulder goes in and out like a drawer.

Of all the myths in this series, this is one where the bad advice involves doing something forceful to somebody else’s body, on the spot, with no X-ray and no pain relief. That’s exactly why it’s worth taking apart properly.

Where does the idea of popping a joint back in come from?

Mostly the screen. The action hero who rams his own shoulder against a door frame, winces once and carries on fighting has been cinema shorthand for toughness for decades. Sports clips do the rest.

Part of it is that some joints genuinely do go back by themselves. The NHS says a dislocated kneecap often returns to its normal position on its own. People see that happen, or hear about it, and the step from “it went back by itself” to “so you can just push it back” feels like a small one. It isn’t.

And part of it comes from people who dislocate the same joint again and again, some of whom have learned to manage it with their own clinical team. Their experience gets passed around as general advice, and it doesn’t travel.

What is actually going on inside a dislocated joint?

A dislocation is when the bones that meet at a joint are forced out of their normal position. Midlands Partnership University NHS Foundation Trust points out that a joint can come partly or fully out of place, and that the bones can break at the same time.

For a bone to get out of its socket at all, the things holding it there have had to give way. Ligaments, the joint capsule, muscles and tendons are stretched or torn. Royal Wolverhampton NHS Trust’s patient leaflet on shoulder dislocation says plainly that the soft tissues will also be damaged.

Then the body does what it always does with an injured joint. The muscles around it tighten and go into spasm. That’s a big part of why a dislocation hurts so much, and why it doesn’t simply slip back when someone tugs on it.

Running past every major joint are nerves and blood vessels. At the shoulder, elbow, hip and knee they sit close to the bone, because that’s the route they have to take to reach the arm or leg below. A displaced bone can press on them, stretch them or kink them, which is why numbness, tingling, or a hand or foot that has gone pale and cold matters so much after an injury like this.

Why does forcing it back in do more harm?

Three reasons, and none of them can be seen from the outside.

You can’t see a fracture through the skin. Pain, swelling, bruising and a joint that won’t move look the same whether a bone is out of place, broken, or both. We made the same point about sprains in Should You Put Heat on a Fresh Sprain?, and it applies here too. If a piece of bone has cracked near the joint, twisting and pulling on it can shift the broken fragment and make the injury worse. That’s why hospital treatment for a dislocated shoulder starts with an X-ray.

The nerves and blood vessels are in the way. Levering a bone back into its socket, without knowing exactly where it’s sitting or what it’s resting against, can stretch or trap the structures it’s already pressing on. Calderdale and Huddersfield NHS Foundation Trust’s shoulder dislocation advice recommends relocation in A&E and warns that trying it yourself can damage the shoulder joint or the tissue around it.

Beating muscle spasm takes force, and force is the problem. In hospital, a dislocated shoulder is put back after a local anaesthetic or a sedative, so the muscles relax and the person doesn’t feel it. On a pitch or a car park floor there is no sedative. The only way past the spasm is to pull harder, and pulling harder is how the damage gets done.

Doesn’t a dislocation get harder to fix the longer it’s left?

Yes, and because it’s the strongest-sounding argument for having a go, it deserves a straight answer.

Midlands Partnership University NHS Foundation Trust describes a dislocated joint as an emergency, and notes that the longer a joint stays out of place, the more painful it becomes and the harder it is to correct. That’s true. Swelling builds, muscles tighten, and the spasm digs in.

But look at what that guidance actually tells you to do: get immediate medical attention. The clock is an argument for getting to A&E quickly. It is not an argument for an untrained person doing it on the floor. The fastest safe route to a joint back in place is a lift to hospital or an ambulance, not a stranger with good intentions and a firm grip.

What should you do instead?

• Leave it where it is. Don’t pull it, twist it or try to put it back, and don’t let anyone else have a go, however confident they sound.
• Support it in the position you found it. Somebody with a dislocated shoulder will almost always cradle the arm against their body. Let them. NHS advice is to support the arm in a sling or with a towel and not to move the upper arm. Cushions or a rolled-up jacket under the elbow work well too.
• For a knee or kneecap, keep the leg still and padded. The NHS says to support the knee with padding such as rolled-up clothing, towels or cushions while sitting or lying down, and not to raise it, stand on it or walk on it.
• Check below the injury, and keep checking. Ask about numbness or pins and needles. Look at the hand or foot below the joint: is it a normal colour, and is it warm? Pale, blue or cold skin below a dislocation needs mentioning to 999 straight away.
• Cool it if you can. An ice pack or a bag of frozen peas wrapped in a tea towel, for up to 20 minutes. Never put ice straight onto skin.
• Get them to A&E, and don’t let them drive. The NHS is clear that someone with a suspected dislocation shouldn’t drive themselves. Someone else drives, or you call 999 if they can’t get there. They should take any medicines they’re on with them.
• Keep talking to them. Dislocations hurt, and people are frightened by how wrong the joint looks. Calm reassurance keeps them still far better than instructions do.
• Write down what happened. How it happened, what time, and what you noticed when you checked below the injury. The hospital will want it, and at work it belongs in the accident book.

Which dislocations need an ambulance rather than a lift to A&E?

Call 999 rather than putting someone in a car if:

• The hand, foot, fingers or toes below the injury are numb, pale, blue or cold
• Bone is visible through the skin, or there’s heavy bleeding
• The pain is so bad that they can’t be moved or can’t get to A&E safely
• It could be the hip. A natural hip usually only dislocates with a big impact, such as a road traffic collision or a fall from height, and that kind of injury rarely comes alone. A replaced hip can dislocate with much less, as University Hospitals Plymouth NHS Trust explains, and in a care setting it can look like a fall where the leg suddenly seems shorter or turned at an odd angle
• It’s the knee joint itself rather than just the kneecap, particularly after a high-energy injury
• There’s any chance of a neck or back injury, in which case the advice in Can Someone Move Their Toes and Still Have a Spinal Injury? applies and you keep them still where they are
• They’ve also hit their head, or they look pale, clammy and unwell

Whatever you’re waiting for, carry on supporting the joint and checking below it until help arrives.

Keep it still, support it, get urgent medical help, and the situations where that help should be an ambulance.

What if the joint pops back in on its own?

It still needs checking. The NHS says that even when a dislocated kneecap goes back into place by itself, it still needs to be seen by a doctor, usually with X-rays, and that you should call 111 if you think it dislocated and then moved back.

A joint that has gone back on its own can still have a fracture or torn tissue inside it. And once a shoulder has dislocated, the NHS says it’s more likely to do it again, with the risk depending on age and on how well the joint heals. Getting it assessed properly, and following the physiotherapy that comes afterwards, is part of reducing that risk.

What about someone who dislocates the same joint regularly?

Some people dislocate a joint repeatedly. Midlands Partnership University NHS Foundation Trust lists hypermobility, conditions such as Ehlers-Danlos syndrome, a previous dislocation of the same joint and joint replacements among the things that raise the risk. Some of those people will have a plan agreed with their own clinicians for what happens when it goes.

If the person in front of you has a plan like that, it’s theirs. Ask them what they need, follow their lead, and don’t take over. What it never becomes is permission for a bystander to have a go. And if anything is different this time, such as numbness, a cold hand or foot, a joint that won’t go back, or pain that’s worse than usual, it’s a hospital visit, plan or no plan.

What changes if the dislocation happens at work?

A dislocation isn’t on the HSE’s list of specified injuries under the Reporting of Injuries, Diseases and Dangerous Occurrences Regulations 2013, which surprises a lot of people. That doesn’t mean it never gets reported.

Under RIDDOR, an accident at work that keeps an employee off work, or unable to do their normal duties, for more than seven consecutive days, not counting the day of the accident, must be reported within 15 days. A member of the public or anyone else who isn’t a worker, taken straight from the scene to hospital for treatment of their injury, is reportable too. If a worker is off for more than three days, the accident has to be recorded even if it doesn’t need reporting.

If your workplace runs sport, PE or physical activity, or supports people with joint replacements or hypermobility, dislocations are worth naming in your first aid needs assessment. So is the practical question of who covers the floor while a first aider waits with a casualty for an ambulance.

Frequently asked questions

Training that keeps hands off the joint

Dislocations sit in the same part of a first aid course as fractures and sprains: the injuries that look manageable and tempt people into doing too much. Knowing what to leave alone is as much a skill as knowing what to do, and it’s much easier to learn on a training day than on a touchline.

Emergency First Aid at Work (EFAW) is the one most workplaces need for a designated first aider, and higher risk sites, including anywhere running sport, physical activity or heavy manual work, usually need the three day First Aid at Work qualification instead. Schools should look at Emergency First Aid for Schools, and anyone working with young children needs Emergency Paediatric First Aid or the two day Paediatric and Early Years First Aid for Ofsted compliance. For a small team who just want the practical basics, Basic First Aid covers it.

If you work in care, where falls and replaced hips go together, Fall Prevention Awareness and Moving and Positioning of People sit well alongside first aid training. Our sprains and strains guide covers the joint injuries that don’t need A&E.

Not sure what your organisation needs? Our Workplace First Aid UK Guide walks through needs assessments and qualification levels. Give us a call on 0333 999 8783 or drop us a message and we’ll help you work it out.

THE VERDICT: BUSTED

If it’s out, it stays out until a doctor puts it back. Keep it still, support it the way you found it, check below it, and get the person on their way to an X-ray and the pain relief that makes putting it back safe.

---

This article is provided for general information and awareness only and reflects NHS guidance and UK legislation applying in England as at October 2026. It does not constitute medical advice, and it is not a substitute for accredited, hands-on first aid training. Guidance can change, and how it applies depends on the individual and the circumstances of the injury. A dislocation and a fracture cannot reliably be told apart without imaging, so any suspected dislocation needs proper medical assessment, even if the joint has gone back on its own. In an emergency, always call 999.