Deep Hip Joint Pain at Night: Causes and Quick Relief

Deep hip pain can feel like an ache buried inside the groin, a sharp pinch when you bend your hip, or discomfort that makes walking, sitting or getting out of a chair difficult.

Unlike surface-level soreness, it may feel as though the pain is coming from somewhere deep within the joint.

But how can you tell whether the pain is coming from the hip joint itself or from the muscles, tendons and other tissues surrounding it?

The answer is not always straightforward.

Hip osteoarthritis, labral problems and femoroacetabular impingement can cause deep pain, while hip flexor irritation, gluteal tendinopathy and referred pain from the lower back may produce similar symptoms.

From a physiotherapy perspective, identifying the likely source of pain matters because different conditions require different rehabilitation strategies.

The location of pain, movements that reproduce it, muscle strength and hip mobility can all help guide the assessment.

What Does Deep Hip Joint Pain Feel Like?

Deep hip pain is often felt in the groin or front of the hip, although it can also occur in the buttock, outer hip or upper thigh.

You may describe it as a dull ache, a sharp pinch, pressure inside the joint or discomfort during particular movements.

Common symptoms include:

• Pain when bending the hip to sit, squat or get into a car.
• Discomfort when walking, climbing stairs or standing up.
• Stiffness after prolonged sitting.
• A catching, clicking or locking sensation during movement.
• Pain when rotating the leg or bringing the knee towards the chest.
• Reduced hip movement or difficulty performing everyday activities.

These symptoms can occur with both joint-related and soft-tissue conditions.

Feeling pain deep inside the hip does not necessarily mean that the joint itself is damaged.

Clinical assessment is needed to distinguish between possible causes and determine whether further investigation is appropriate. (Chamberlain et al., 2021)

Is the Pain Coming From the Hip Joint or Muscles?

The hip is a ball-and-socket joint surrounded by muscles, tendons, ligaments and other tissues.

Pain can originate from several of these structures, and more than one problem may contribute at the same time.

The following patterns can provide useful clues, but they cannot establish a diagnosis on their own.

Feature	Possible joint-related pain	Possible muscle or tendon pain
Pain location	Often deep in the groin or front of the hip	May occur in the groin, outer hip, buttock or upper thigh
Movement	May be triggered by bending, rotation or weight-bearing	May increase when a particular muscle contracts or stretches
Stiffness	May occur after rest or with reduced joint mobility	May accompany muscle soreness or tendon irritation
Tenderness	May be difficult to reproduce by pressing on the surface	May be present over the affected muscle or tendon
Strength	Movement may be limited by pain or joint stiffness	Resisted movement may reproduce pain or reveal weakness
Everyday activities	Sitting, squatting, walking or turning may be uncomfortable	Lifting the knee, climbing stairs or standing on one leg may aggravate symptoms

These are general patterns rather than strict rules.

Hip flexor irritation, for example, can cause deep groin pain, while joint problems can also produce muscle weakness and tenderness.

Common Causes of Deep Hip Joint Pain

1. Hip Osteoarthritis

Hip osteoarthritis involves changes in the joint that can affect cartilage, underlying bone and other joint tissues.

It may develop gradually and cause pain, stiffness and reduced movement.

Common symptoms include:

• A deep ache in the groin or front of the hip.
• Stiffness after sitting or resting.
• Pain when walking or standing for long periods.
• Difficulty putting on socks or shoes.
• Reduced ability to bend or rotate the hip comfortably.

Symptoms may initially appear during demanding activities and later become more persistent.

However, pain severity does not always correspond directly to the degree of structural change.

Physiotherapy may include progressive strengthening, mobility exercises, walking advice and activity modification.

A systematic review and meta-analysis found that exercise therapy can improve pain and physical function in people with hip osteoarthritis, although the average benefits were generally modest. (Teirlinck et al., 2023)

2. Femoroacetabular Impingement

Femoroacetabular impingement syndrome (FAIS) occurs when the shape of the ball or socket contributes to abnormal contact during particular hip movements, producing symptoms in susceptible individuals.

Deep groin pain is common, particularly during activities involving repeated hip flexion, such as deep squatting, certain sporting movements or sitting in a low chair.

Other symptoms may include:

• Pain when bringing the knee towards the chest.
• Discomfort during twisting or pivoting.
• Restricted hip movement.
• Clicking or catching sensations.

Having a particular hip bone shape on an X-ray does not automatically mean that someone has symptomatic impingement.

A diagnosis requires an appropriate combination of symptoms, clinical signs and imaging findings.

Physiotherapy may focus on modifying aggravating movements, improving strength and control, and gradually restoring activity tolerance.

Persistent symptoms may warrant assessment by a clinician experienced in hip conditions. (Griffin et al., 2016)

3. Acetabular Labral Problems

The acetabular labrum is a ring of cartilage-like tissue around the rim of the hip socket.

It helps deepen the socket and contributes to joint stability.

A labral tear or other labral abnormality may cause deep groin pain, discomfort with twisting and a catching sensation during movement.

Some people also report clicking or restricted hip movement.

However, labral abnormalities can appear on imaging in people who have no symptoms.

Finding a tear on a scan does not automatically prove that it is the source of pain.

A systematic review found that imaging-defined labral abnormalities are also common in people without hip pain.

This is why scan results need to be interpreted alongside symptoms and clinical findings. (Heerey et al., 2018)

Physiotherapy may involve modifying painful activities, improving hip and trunk strength, and working on movement control.

If symptoms persist or significantly restrict function, further specialist assessment may be appropriate.

4. Hip Flexor Irritation

The hip flexors, including the iliopsoas muscle group, help lift the thigh and control hip movement.

Irritation or injury involving these muscles and tendons can produce pain at the front of the hip or deep in the groin.

This can sometimes be mistaken for pain originating inside the joint.

Clues may include:

• Pain when lifting the knee.
• Discomfort when climbing stairs.
• Pain when getting into a car.
• Symptoms after running, kicking or repeated hip flexion.
• Discomfort when stretching the front of the hip.

A physiotherapist may assess hip flexor strength, movement tolerance and whether resisted hip flexion reproduces the familiar pain.

Treatment may include temporary modification of aggravating activities, comfortable mobility work and gradual strengthening.

Persistent deep groin pain should not automatically be treated as a muscle strain without assessing other possible causes.

5. Gluteal Tendinopathy

Gluteal tendinopathy affects the tendons of muscles that help stabilise the pelvis, particularly during walking and standing on one leg.

Unlike many joint-related conditions, it typically causes pain on the outside of the hip rather than deep in the groin.

However, some people describe the discomfort as deep or difficult to localise.

Symptoms often include:

• Pain when lying on the affected side.
• Tenderness over the outer hip.
• Discomfort when climbing stairs or walking uphill.
• Pain during prolonged single-leg standing.
• Symptoms after an increase in walking or exercise.

Physiotherapy commonly involves education about tendon loading, reducing aggravating positions and gradually improving hip strength.

A randomized clinical trial found that education combined with exercise improved outcomes in people with persistent gluteal tendinopathy compared with a wait-and-see approach. (Mellor et al., 2018)

6. Referred Pain From the Lower Back

Sometimes, pain felt in the hip is caused by a problem elsewhere, particularly the lumbar spine or nearby nerves.

Referred pain may affect the buttock, outer hip or thigh. Nerve-related symptoms can also include tingling, numbness or burning sensations.

You may notice that symptoms change when you bend your back, sit for long periods or change position.

However, the absence of back pain does not completely rule out a spinal contribution.

Physiotherapy may assess both the hip and lower back to identify the likely source of symptoms and guide treatment.

Can You Tell the Difference at Home?

You can observe how your pain behaves, but home checks cannot reliably diagnose a hip joint or muscle problem.

Pay attention to these patterns:

• Pain during deep squats or hip bending: May occur with joint-related conditions, hip flexor problems or other soft-tissue irritation.
• Pain when lifting the knee against resistance: May suggest involvement of the hip flexors, but it does not rule out a joint problem.
• Pain when lying on the outer hip: May be associated with gluteal tendinopathy or other outer-hip conditions.
• Pain that changes with back movement: May suggest that the lower back contributes to the symptoms.
• Reduced hip movement: Can occur with osteoarthritis, impingement and other conditions.

Do not repeatedly force painful movements to test yourself.

The goal is to notice symptom patterns, not to provoke pain.

If deep hip pain persists, limits daily activities or repeatedly returns, a physiotherapist or doctor can assess the likely cause and determine whether imaging or further investigation is needed.

How Can a Physiotherapist Identify the Source?

A physiotherapist does not rely on pain location alone.

The assessment combines your symptom history, movement patterns, physical examination and functional limitations.

1. Understand Your Symptoms

Your physiotherapist may ask:

• When did the pain begin?
• Is it deep in the groin, on the outer hip or in the buttock?
• Does bending, walking, twisting or lifting the knee make it worse?
• Did the pain begin after an injury or an increase in exercise?
• Do you experience clicking, catching, stiffness or a feeling that the hip may give way?

These details help narrow the possible causes and identify whether medical investigation may be needed.

2. Assess Movement and Strength

The examination may include hip range of motion, muscle strength, walking, balance and functional movements such as squatting or standing from a chair.

A physiotherapist may also assess whether resisted muscle contractions or particular hip movements reproduce your familiar pain.

No single physical test can reliably distinguish every joint problem from every muscle or tendon problem.

Findings must be interpreted together, rather than treating one positive test as a definitive diagnosis. (Enseki et al., 2023)

3. Determine Whether Further Investigation Is Needed

Imaging is not necessary for every person with hip pain.

However, a clinician may recommend an X-ray, ultrasound or MRI when symptoms, examination findings or the suspected condition justify further investigation.

X-rays can help assess bone structure and osteoarthritis.

MRI may be considered when a labral, cartilage, stress injury or other soft-tissue problem is suspected.

The decision depends on the clinical presentation.

Imaging findings must also be interpreted alongside symptoms because some structural abnormalities occur in people without pain.

Physiotherapy for Deep Hip Pain

Treatment depends on whether the symptoms are caused by the joint, muscles, tendons or referred pain.

Once serious conditions have been excluded, physiotherapy may help improve movement, strength and everyday function.

1. Modify Painful Activities

If deep hip pain worsens during deep squats, low seating or repeated twisting, temporarily reduce the range or frequency of those movements.

This does not necessarily mean avoiding the activities permanently.

The aim is to reduce excessive aggravation while maintaining comfortable movement.

2. Improve Strength and Movement Control

Depending on the assessment, a physiotherapist may prescribe exercises for the gluteal muscles, hip flexors, trunk muscles or other structures involved in movement.

Examples may include controlled sit-to-stand exercises, supported hip strengthening and functional balance work.

The appropriate exercises and progression depend on the cause of pain and your ability to tolerate loading.

3. Restore Mobility Gradually

If restricted movement contributes to your symptoms, a physiotherapist may introduce gentle, targeted mobility exercises.

Avoid forcing the hip into deep flexion or rotation if those positions reproduce sharp or pinching pain.

More stretching is not always better, particularly when joint irritation or tendon compression may be involved.

4. Progress Towards Everyday Activities

As symptoms improve, rehabilitation can gradually progress towards walking, climbing stairs, work tasks and sport-specific movements where relevant.

A physiotherapist should monitor how you respond during exercise and afterwards.

If pain becomes substantially worse or function deteriorates, the program may need adjustment or the diagnosis may need to be reviewed.

When Should You Seek Medical Attention?

Arrange a clinical assessment if deep hip pain persists, repeatedly returns, limits walking or daily activities, or does not improve with appropriate activity modification.

Seek urgent medical care if you experience:

• Sudden, severe hip pain without an obvious explanation.
• Severe pain after a fall or injury.
• Inability to walk or put weight on the affected leg.
• A hot or swollen hip accompanied by fever or feeling seriously unwell.
• New or progressive leg weakness or significant neurological symptoms.

These symptoms may indicate a condition that needs prompt investigation rather than routine exercise-based rehabilitation.

A Lesser-Known Fact About Deep Hip Pain

Pain that feels as though it comes from inside the joint does not always originate there.

The hip flexor tendons and other soft tissues lie close to the joint, so irritation in these structures can produce pain in the same general area as a labral or joint problem.

Similarly, a structural abnormality seen on an MRI may not be the cause of someone’s symptoms.

This is why an accurate assessment considers the person’s pain pattern, physical findings and imaging together when necessary.

Understanding the likely source of pain helps avoid unnecessary exercises or treatments that may not address the underlying problem.

Conclusion

Deep hip joint pain can arise from hip osteoarthritis, femoroacetabular impingement, labral problems, hip flexor irritation, gluteal tendinopathy or referred pain from the lower back.

The location and behaviour of the pain can provide clues, but they cannot reliably distinguish joint pain from muscle or tendon pain on their own.

Physiotherapy can help by assessing movement and strength, modifying aggravating activities and developing an individualized rehabilitation program.

Persistent or worsening symptoms deserve clinical assessment, while severe pain, inability to bear weight or signs of infection require urgent medical attention.

The priority is to identify the likely source of pain and choose treatment that supports safe, effective recovery.

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