A sprain or strain occurs when a joint is twisted or a ligament or muscle is overstretched — the classic example is a twisted ankle. Typical symptoms include swelling, pain, and sometimes bruising. Most of these injuries are harmless and heal on their own within days to weeks with proper first aid. It is important to respond correctly in the first few days.
Possible causes
Ligament sprain
When a joint is twisted, the ligaments are overstretched, most commonly at the ankle. This causes swelling and pain, but the ligaments usually remain intact and heal on their own.
Muscle strain
An overstretching of muscle fibers, often during sports without adequate warm-up. The pain occurs when the muscle is tensed and improves with rest and gradual loading.
Tendon overstretching
Tendons can also be overstretched and irritated by sudden stress. Such symptoms usually resolve with rest.

Typical steps at the doctor's office
- 1The doctor will ask about how the injury occurred and examine swelling, tender points, mobility, and weight-bearing ability. This helps assess whether there is only a strain or a more serious injury.
- 2If a bone injury is suspected, an X-ray will rule out a possible fracture. With a simple sprain, imaging is often not necessary.
- 3Treatment is usually conservative: rest, ice, and elevation in the first few days, followed by gradual resumption of weight-bearing. Supporting the joint can aid healing.
What you can do yourself
- For the first few days: rest the joint, apply ice, support it with a light bandage, and elevate it.
- After the acute phase, begin gentle movement within the pain-free range rather than immobilizing the joint for an extended period.
- Gradually and progressively rebuild weight-bearing and do not return to sports too early.
- Targeted exercises for strength and balance help prevent another twist or sprain.
A doctor's visit is advisable if the joint is severely swollen, cannot bear weight, or if symptoms do not improve after a few days. If pain worsens again after initial improvement, an examination is also worthwhile.

Frequently asked questions
- Ice or heat?
- Apply ice in the first few days after the injury, as this reduces swelling and pain. Heat is only useful later, once the acute swelling has subsided and tense muscles need to be relaxed.
- How do I know if something is broken?
- This cannot be determined with certainty from the outside. If the joint cannot bear any weight, swells significantly, or shows deformity, an X-ray should rule out a fracture.
- How long should I rest the joint?
- Rest it consistently only for the first few days, then gradually resume weight-bearing. Immobilization for too long weakens muscles and joints and delays the return to full function.
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