Groin Strain

Overview

A groin strain is a stretch or small tear in one of the muscles on the inside of your thigh, close to where they join the pelvis. These muscles are called the adductor muscles, and their job is to pull your leg inward. When they are stretched further than they can cope with, some of the muscle fibres can be damaged. This is sometimes called a pulled groin muscle. Groin strains can be mild (a slight stretch), moderate (a small tear) or severe (a bigger tear).

Yes. Groin strains are very common, particularly in people who play football, rugby, hockey, tennis, martial arts or dance. They are one of the most frequent reasons athletes miss training.

Anyone can get a groin strain, but it is most common in people who play sports that involve kicking, sprinting or sudden sideways movements. It also happens to people who slip, stretch awkwardly, or start a new activity without building up gradually. Teenagers going through growth spurts and older adults with stiffer muscles can also be affected.

Symptoms

Common symptoms

• A sudden sharp pain or pulling feeling in the inner thigh, sometimes with a 'pop' or 'snap' at the time of injury
• Tenderness when you press the inside of the upper thigh near the groin
• Pain when you squeeze your legs together, for example when crossing your legs or gripping with your knees
• Pain when you lift your knee up towards your chest or stretch your leg out to the side
• Bruising or swelling appearing over the inner thigh in the hours or days after the injury
• A feeling of weakness in the leg, or a limp when walking
• Pain that eases with rest but comes back when you return to sport or activity

Symptoms in children

• Children often describe vague pain in the groin, hip or thigh rather than a clear strain
• They may limp, avoid running, or be reluctant to join in PE or play
• Groin pain in children can also come from the hip joint or growth areas, so it is worth having it checked if it lasts more than a few days
• A sudden pain after a fall or sports tackle should be checked if your child cannot walk normally

Symptoms in older adults

• Muscles and tendons become less flexible with age, so a strain can happen with a fairly minor movement such as slipping or getting out of a chair awkwardly
• Groin pain in older adults can also be caused by hip joint problems such as arthritis, or by a hernia, so it is worth getting assessed
• Recovery may take a little longer, and building strength steadily matters more

Causes

Main causes

• A sudden sideways movement, twist, or slip that stretches the inner thigh muscles further than they can manage
• Kicking, especially kicking against resistance or kicking the air with force
• Sprinting, accelerating quickly, or changing direction at speed
• Overstretching during exercise, such as a wide lunge or a side split
• Doing too much too soon, for example returning to training after a break or increasing training load quickly
• Muscle tiredness, which reduces your muscles' ability to absorb force

Risk factors

• Having had a groin strain before — this is one of the strongest risk factors
• Playing sports with lots of kicking, sprinting or direction changes, such as football, rugby, hockey, tennis, martial arts and dance
• Weak hip, buttock and core muscles, or tight inner thigh and hip muscles
• Not warming up before activity
• Training harder or longer than usual without building up gradually
• Being generally less fit or returning to sport after a long break
• Being a teenager going through a growth spurt, when bones grow faster than muscles and tendons can adjust

When to see a doctor

See a doctor urgently if:

• You cannot put weight on the leg or walk more than a few steps
• The pain is severe and getting worse, or you heard a loud pop at the moment of injury
• You have numbness, tingling or weakness that does not go away
• You notice a lump in the groin, or a bulge that appears when you cough
• You have a fever with groin pain or swelling
• There is sudden, painful swelling in the testicle

Book a routine appointment if:

• The pain is mild but has not settled after one to two weeks of resting from the activity that caused it
• Your bruising or swelling is spreading
• You keep getting groin pain every time you exercise
• You are unsure whether it is a strain or something else, such as a hip problem or a hernia
• You want help planning a safe return to sport or exercise

Diagnosis

A doctor or physiotherapist will usually ask about how the injury happened, what makes the pain worse, and whether you have had groin trouble before. Then they will examine you — feeling the inner thigh for tenderness, asking you to squeeze your legs together and against resistance, and checking your hip joint and groin for signs of a hernia. In most cases this is all that is needed to make a diagnosis.

Tests that may be done

• Usually no tests are needed — the examination is often enough
• An ultrasound scan may be used if the injury is severe or not healing as expected
• An MRI scan may be arranged for a suspected larger tear, or for ongoing groin pain that is not improving
• An X-ray may be done if a hip joint problem, fracture or bone issue is suspected
• A referral to a physiotherapist or sports medicine specialist may be offered for a full movement assessment

What to expect at your appointment

The appointment is usually quick and hands-on. You may be asked to do a few movements, such as squeezing your knees together or lifting your leg against gentle resistance. It should not be painful for long. If you are sent for a scan, you will normally get the results within a week or two, and you can ask what the findings mean for your recovery plan.

Treatment

Most groin strains heal with time, relative rest and a staged return to movement and strength. The goal is to let the muscle heal while keeping it gently active, then to build strength so the muscle can cope with sport again. Recovery usually takes a few weeks for a mild strain and longer for a bigger tear.

Self-care at home

• In the first two to three days, rest from the activity that caused it, but keep walking gently if it is comfortable — complete bed rest is not helpful
• Apply a cold pack (wrapped in a cloth, never directly on the skin) for around 15 to 20 minutes every few hours in the first two days to ease pain and swelling
• Ask your pharmacist about suitable pain relief if you need it — they can advise on options that are safe for you
• Wear supportive, comfortable clothing and avoid tight waistbands that press on the sore area
• Once the sharp pain settles, start gentle pain-free movement, such as slow walking and easy stretches of the inner thigh
• Follow a staged strengthening plan — gentle squeezing exercises with the legs, then resistance work, then running, then sport-specific drills
• Avoid stretching hard into pain — a gentle stretch should feel like a mild pull, not a sharp pain
• Return to sport gradually, and only when you can move, stretch and sprint without pain

Medical treatments

Your doctor or physiotherapist will usually recommend a structured rehabilitation programme rather than medicine. This means exercises to build strength and flexibility in the hip, thigh and core muscles, plus advice on how to pace your return to activity. They may suggest ways to manage pain, such as simple pain relief recommended by your pharmacist. If your pain is not improving, they may refer you to a physiotherapist or a sports medicine clinic for a more detailed programme. They may also check for other causes of groin pain, such as a hip problem or a hernia, if your symptoms do not fit a simple strain.

When is surgery considered?

Surgery is rarely needed for a groin strain. It may be considered if a muscle or tendon has torn completely away from the bone, if there is a large tear that is not healing, or if pain and weakness continue after a long period of good rehabilitation. Your doctor would discuss this with you in detail and refer you to a specialist if needed.

Living with this condition

In the first few days, take things a little easier and let pain guide you. Keep up gentle walking, avoid long periods of sitting in one position, and use a cushion or soft support if sitting is uncomfortable. Build your normal activities back gradually — small, steady steps beat doing too much on a good day and paying for it the next. Most people can keep working and doing light daily tasks while they recover.

Lifestyle tips

• Keep moving gently — light activity helps muscles heal better than complete rest
• Build hip and core strength over time, as this protects the groin muscles
• Warm up for five to ten minutes before exercise and cool down afterwards
• Increase training load slowly, and avoid sudden big jumps in how much you do
• Wear supportive footwear for walking and sport
• Get enough sleep, as this is when your body repairs muscle

Diet and exercise

There is no special diet for a groin strain, but eating regular balanced meals with enough protein helps your muscles repair. Include plenty of vegetables and fruit, whole grains, and protein foods such as beans, eggs, fish, dairy or lean meat. Drink water regularly. For exercise, start with easy walking and gentle pain-free movement, then add strengthening exercises for the hips, buttocks and inner thighs. A physiotherapist can give you a step-by-step plan. As a rough guide, you can move on to the next stage when the current one causes no pain — rushing this is the most common reason groin strains come back.

Mental health and emotional wellbeing

Being sidelined from sport or exercise can be genuinely frustrating, and it is common to feel low, impatient or anxious about getting back to normal. These feelings are valid. Try to focus on what you can control — your exercises, your sleep, your gradual progress — and keep in touch with teammates, friends or training partners. If you are feeling persistently low or very anxious, tell your doctor. If you ever feel you cannot cope or have thoughts of harming yourself, contact your local crisis support line or go to your nearest emergency department straight away.

Prevention

You cannot prevent every injury, but you can greatly reduce your risk. Warming up properly, building hip and thigh strength, keeping muscles flexible, and increasing your training gradually all help. If you have had a groin strain before, a structured strengthening programme is one of the best ways to stop it coming back.

Screening programmes

There is no routine screening test for groin strains. However, if you play sport regularly, a pre-season movement and strength check with a physiotherapist can spot weak or tight areas and give you exercises to work on.

Complications

If left untreated

• The strain may take much longer to heal, or heal with weaker scar tissue
• You may keep getting groin pain when you exercise, sometimes called long-standing groin pain
• You may lose strength and flexibility in the hip and thigh, which can affect how you move and lead to other injuries
• Returning to sport too soon raises the risk of making the tear bigger
• Ongoing pain can affect sleep, mood and your enjoyment of activity

Long-term outlook

The outlook is good. Most people with a groin strain recover fully, especially if they rest sensibly at first and then follow a steady strengthening plan. Mild strains often settle within two to four weeks, and larger tears may take a few months. Taking your time and building back gradually gives you the best chance of getting back to the activities you enjoy without the pain returning.

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