17039 Hamstring Injury

Overview

A hamstring injury is a strain or tear in the large muscles at the back of your thigh. It happens when the muscle is overstretched or forced to work too hard.

Yes. Hamstring injuries are very common, especially in sports that involve sprinting, jumping, or sudden stops.

Anyone can get a hamstring injury. It happens most often in athletes, dancers, and older adults whose muscles are less flexible.

Symptoms

Common symptoms

• Pain at the back of your thigh
• Tenderness when you touch the area
• Swelling and bruising after a day or two
• Difficulty straightening your leg fully
• A sudden sharp pain during activity
• Weakness in the leg when trying to bend or lift it

Symptoms in children

• Limping or avoiding putting weight on one leg
• Complaining of pain after running or playing sports
• Swelling or tenderness at the back of the thigh

Symptoms in older adults

• More obvious bruising that may spread down the leg
• Stiffness and pain when sitting or bending forward
• A feeling of weakness when standing up from a chair

Causes

Main causes

• Overstretching the muscle during exercise
• Suddenly speeding up or changing direction
• Tight or fatigued muscles
• Not warming up properly before activity
• A previous hamstring injury
• Poor muscle strength or imbalance between the front and back of the thigh

Risk factors

• Playing sports like football, rugby, sprinting, or tennis
• Increasing exercise intensity too quickly
• Being older, as muscles become less flexible
• Having a history of a hamstring injury
• Exercising when tired

When to see a doctor

See a doctor urgently if:

• You have sudden severe pain and heard a pop
• You cannot put any weight on the leg
• The leg looks deformed or the pain is unbearable
• You have signs of a blood clot, such as a hot, swollen calf or sudden breathlessness

Book a routine appointment if:

• Pain is not getting better after 3 to 5 days of home care
• You still have difficulty walking after a week
• You keep injuring the same hamstring
• You are unsure how to start moving again safely

Diagnosis

A doctor will ask how the injury happened, examine your leg, and test your range of movement and strength. They may press on the area to find the exact spot of pain.

Tests that may be done

• Most hamstring injuries do not need scans.
• If a severe tear is suspected, an ultrasound or MRI may be arranged to look at the muscle more closely.

What to expect at your appointment

Your doctor will tell you how severe the strain is, usually grade 1, 2, or 3, and give you a recovery plan. They may advise rest, gentle movement, and physiotherapy.

Treatment

Most hamstring injuries are managed without surgery. The goal is to control pain and swelling, protect the muscle while it heals, and then gradually build strength and flexibility.

Self-care at home

• Rest the leg from activities that cause pain, but try to keep walking gently if it is not too painful.
• Apply an ice pack wrapped in a towel to the painful area for 15 to 20 minutes every 2 to 3 hours for the first few days.
• Wrap the thigh with a soft compression bandage to help reduce swelling.
• Raise the leg on a cushion when resting to help fluid drain.
• Ask your pharmacist about pain relief that is safe for you. Some pain relief comes as a gel or cream to rub on the skin.

Medical treatments

A doctor or physiotherapist may recommend a structured exercise programme, which is the main treatment. They may also suggest a short course of anti-inflammatory medicine if needed. Always follow your healthcare provider's advice.

When is surgery considered?

Surgery is rarely needed. It may be considered only for a complete tear at the very top of the hamstring where the muscle pulls away from the bone.

Living with this condition

You may need to slow down for a few weeks. Use a normal walking pattern as pain allows. Avoid sitting for long periods without standing up and stretching your leg. Try to keep your leg comfortable, but do not keep it completely still for days.

Lifestyle tips

• Do not return to sport until you can walk, jog, and change direction without pain.
• Follow a step-by-step strengthening routine, with help from a physiotherapist.
• Always warm up properly before exercise.
• Be patient. Rushing back strengthens the risk of injuring the same muscle again.

Diet and exercise

Eating a balanced diet with enough protein, vitamin C, and zinc can help your body repair damaged muscle. Gentle exercises like swimming or cycling can help you stay active without putting strain on your hamstring. Wait until your pain is under control before starting these.

Mental health and emotional wellbeing

Being inactive and in pain can feel frustrating or upsetting. It is normal to feel a bit low. Try to set small goals, stay in touch with friends and family, and remember that most hamstring injuries heal fully with time.

Prevention

You cannot always prevent a hamstring injury, but you can lower your risk by keeping your leg muscles strong and flexible, warming up properly, and increasing exercise gradually.

Complications

If left untreated

• The injury may take longer to heal.
• You may develop chronic pain or weakness in the leg.
• You may be more likely to injure the same hamstring again.
• Scar tissue can form and make the muscle less flexible.

Long-term outlook

With proper care, most hamstring injuries heal within 4 to 8 weeks. More severe tears can take up to 3 months or longer. Starting early with gentle movement and building strength gradually gives you the best chance of full recovery. You can expect to return to your normal activities safely when you take the time to heal properly.

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