Author: DokterSingapura Editorial Team
Clinical review: Dr Terence Tan, licensed medical doctor in Singapore
Founder, The Pain Relief Clinic
Reviewed: May 2026

Groin pain can be confusing.

Many people assume groin pain must be a muscle strain.

Others worry about a hip joint problem.

Some are surprised to learn that the lower back can sometimes refer pain toward the groin or front of the thigh.

The practical question is:

Is the pain coming from the hip, the lower back, the muscles around the groin, or something else?

Why Groin Pain Is Difficult To Interpret

The groin region sits near several important structures, including:

• hip joint
• hip flexor muscles
• adductor muscles
• lower abdominal wall
• pelvic structures
• nerves from the lower spine
• tendons around the hip
• nearby lymph nodes
• hernia-related structures

This means groin pain is not always a simple muscle issue.

The pattern matters.

When Groin Pain Suggests A Hip Joint Problem

Groin pain is one of the more classic locations for hip joint-related pain.

Hip joint problems may cause symptoms during:

• walking
• climbing stairs
• getting in and out of a car
• putting on socks
• crossing the legs
• squatting
• turning or pivoting

AAOS notes that hip osteoarthritis commonly causes pain in the groin or thigh, sometimes spreading to the buttocks or knee, with stiffness and reduced range of motion affecting walking. (OrthoInfo)

This does not mean every groin pain is arthritis.

But persistent groin pain with stiffness should raise the possibility of hip joint involvement.

Hip Arthritis And Groin Pain

Hip osteoarthritis may cause:

• deep groin ache
• stiffness after rest
• reduced hip rotation
• difficulty walking
• limp
• pain with weight-bearing
• reduced ability to bend the hip

NICE guidance for osteoarthritis recommends therapeutic exercise tailored to the person’s needs, including strengthening and aerobic fitness, with weight management support where relevant. (NICE)

For some patients, X-ray may be useful to assess joint space narrowing and bony changes.

When Groin Pain May Come From The Lower Back

Although hip joint problems are common causes of groin pain, the lower back can also refer pain toward the groin or front of the thigh.

This may happen with:

• upper lumbar nerve irritation
• lumbar facet joint-related pain
• referred spinal pain
• degenerative lumbar changes
• disc-related irritation in selected cases

Back-related groin pain may be more likely if there is:

• lower back pain
• pain changing with spine movement
• numbness or tingling
• pain spreading into the thigh
• symptoms affected by sitting or standing
• previous back pain history

According to Dr Terence Tan, groin pain should not be automatically labelled as a hip problem without checking whether the lower back, nerves, and hip movement pattern fit the symptoms.

Hip Pain vs Back Pain: Useful Clues

More Suggestive Of Hip Joint Source

• deep groin pain
• reduced hip rotation
• difficulty putting on socks
• pain getting in or out of a car
• pain turning in bed
• limp
• stiffness with walking
• pain reproduced by hip movement

More Suggestive Of Back Or Nerve Source

• back pain with groin or thigh symptoms
• numbness or tingling
• pain affected by spine position
• pain travelling beyond the knee
• leg weakness
• symptoms changing with coughing or sneezing
• walking-limited symptoms relieved by sitting

These are not perfect rules, but they help guide assessment.

When Groin Pain May Be A Muscle Or Tendon Problem

Groin pain may also come from muscle or tendon strain.

Common examples include:

• adductor strain
• hip flexor irritation
• sports-related groin strain
• tendon overload
• sudden change in training load

This may be more likely when pain begins after:

• sprinting
• kicking
• sudden direction change
• gym exercises
• running uphill
• heavy squats or lunges

Muscle-related groin pain may be tender to touch and aggravated by resisted movements.

When Groin Pain May Be A Hernia Or Non-Musculoskeletal Issue

Not all groin pain is musculoskeletal.

Other possibilities include:

• inguinal hernia
• urinary tract issues
• abdominal or pelvic causes
• testicular or gynaecological causes
• infection-related causes

Seek medical assessment if groin pain is associated with:

• visible groin swelling
• fever
• abdominal pain
• urinary symptoms
• testicular pain
• severe sudden pain
• unexplained systemic symptoms

These should not be treated as routine hip or back pain.

Does Groin Pain Need Imaging?

Not automatically.

Imaging depends on the likely cause.

X-Ray May Be Useful When:

• hip arthritis is suspected
• walking is painful
• hip stiffness is significant
• symptoms are persistent
• fracture or bony concern is possible

MRI May Be Useful When:

• diagnosis remains unclear
• labral injury is suspected
• occult fracture or stress injury is suspected
• pain persists despite care
• X-ray does not explain symptoms
• deeper soft tissue or joint assessment is needed

Spine Imaging May Be Considered When:

• back-related symptoms are present
• nerve symptoms exist
• neurological findings develop
• symptoms persist despite appropriate care
• imaging would change management

The important principle is that imaging should answer a clinical question.

Common Patient Mistakes

Mistake 1: Assuming Groin Pain Is Always Muscle Strain

Persistent groin pain with stiffness or walking limitation may involve the hip joint.

Mistake 2: Ignoring The Lower Back

Back-related referred pain can sometimes mimic hip or groin problems.

Mistake 3: Stretching Aggressively

If the problem is joint-related, nerve-related, or tendon-sensitive, aggressive stretching may worsen symptoms.

Mistake 4: Delaying Assessment Despite Limping

A persistent limp or reduced walking tolerance deserves review.

Practical Questions To Ask

If you have groin pain, ask:

• Did it start after sport or sudden movement?
• Is the pain deep inside the groin?
• Is hip rotation stiff?
• Is putting on socks difficult?
• Is there lower back pain?
• Is there numbness or tingling?
• Does pain travel below the knee?
• Is there visible swelling?
• Is walking becoming harder?
• Is pain worsening over time?

These answers help guide whether the hip, back, groin muscles, or another cause is more likely.

The Main Takeaway

Groin pain may come from the hip, lower back, muscles, tendons, hernia-related structures, or other medical causes.

Hip joint problems commonly cause deep groin pain and stiffness.

Back-related pain may be suspected when groin symptoms occur with back pain, nerve symptoms, or spine-position changes.

The safest approach is not to guess.

The goal is to identify the pattern, check for warning signs, and decide whether physiotherapy, doctor-led assessment, X-ray, MRI, or another pathway is most appropriate.

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FAQ

Is groin pain usually hip-related?

Groin pain is commonly associated with hip joint problems, especially when it is deep, linked to walking, and associated with stiffness. But muscle, tendon, back, hernia, and other causes are also possible.

Can back problems cause groin pain?

Yes. Some lower back and nerve-related problems can refer pain toward the groin or front of the thigh.

How do I know if groin pain is arthritis?

Hip arthritis is more likely when groin pain is associated with stiffness, reduced hip rotation, difficulty walking, and pain with weight-bearing.

Do I need MRI for groin pain?

Not always. X-ray may be useful first if hip arthritis is suspected. MRI is usually considered when diagnosis remains unclear or deeper structural questions need answering.

When should groin pain be checked urgently?

Seek prompt review if there is severe sudden pain, visible groin swelling, fever, abdominal symptoms, testicular pain, inability to walk, or neurological symptoms.

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About The Medical Reviewer

Dr Terence Tan is a licensed medical doctor in Singapore and founder of The Pain Relief Clinic. He has over 20 years of clinical experience in musculoskeletal assessment and practical non-surgical care pathways.

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Medical Disclaimer

This article is for general educational purposes only and does not replace personalised medical assessment, diagnosis, or treatment by a licensed healthcare professional.