If your knee has been hurting for days, weeks or months, one of the most common questions is:

Who should I actually see first?

Should you go to:

• A GP?
• A medical clinic?
• A physiotherapist?
• An orthopaedic surgeon?
• An imaging centre for an X-ray or MRI?

The answer depends on how the pain started, how severe it is and whether there are warning signs.

For many patients, a practical first step is a medical assessment by a licensed doctor who can examine the knee, identify likely causes and decide whether physiotherapy, medication, imaging or specialist referral is appropriate.

Knee pain can arise from injuries, arthritis, meniscus problems, ligament injuries, tendons, bursae and other conditions, so treatment should ideally follow a diagnosis rather than simply treating “knee pain” as one condition.

What Type of Doctor Treats Knee Pain?

Several healthcare professionals can be involved in knee care.

The right one depends on the situation.

A GP or Licensed Medical Doctor

This is often a reasonable first point of assessment for knee pain.

A doctor can:

• Take a medical history
• Examine the knee
• Check movement and stability
• Assess swelling
• Look for signs of injury or arthritis
• Decide whether imaging is needed
• Prescribe medication where appropriate
• Refer for physiotherapy
• Refer to an orthopaedic surgeon if necessary

A knee examination commonly includes checking for swelling, tenderness, warmth, range of movement and ligament stability.

Physiotherapist

A physiotherapist can be particularly useful when the problem involves:

• Muscle weakness
• Movement control
• Reduced mobility
• Gradual-onset knee pain
• Rehabilitation after injury
• Return to exercise

Physiotherapy and strengthening are commonly used for many knee conditions.

However, if the diagnosis is unclear, symptoms are severe, or treatment is not working, it may be useful to have the knee medically reassessed rather than simply continuing the same rehabilitation indefinitely.

Orthopaedic Surgeon

An orthopaedic surgeon may be appropriate when:

• A major ligament tear is suspected
• There is a significant meniscus injury
• A fracture is present
• Severe arthritis is being considered for surgery
• The knee repeatedly locks
• There is major instability
• Non-surgical treatment has failed
• Surgery may need to be considered

Seeing an orthopaedic surgeon does not automatically mean you will need surgery.

Many orthopaedic conditions are initially treated without an operation.

Do I Need to See an Orthopaedic Surgeon Straight Away?

Not necessarily.

Many knee problems can initially be assessed and treated without surgery.

Examples include:

• Patellofemoral pain
• Mild osteoarthritis
• Tendon-related pain
• Overuse injuries
• Some meniscus problems
• Minor ligament sprains

Minor knee pain often responds to self-care, physiotherapy or other conservative treatment.

If symptoms are severe, traumatic or persistent, then orthopaedic referral may become more appropriate.

What if My Knee Pain Started Without an Injury?

Gradual-onset knee pain can have many causes.

These include:

• Osteoarthritis
• Patellofemoral pain
• Tendon irritation
• Overuse
• Bursitis
• Meniscus degeneration

A medical examination can help determine which structure is most likely responsible.

The location and pattern of pain can also provide useful clues.

What if My Knee Hurts When Climbing Stairs?

Pain around or behind the kneecap during:

• Stair climbing
• Squatting
• Getting out of a chair
• Prolonged sitting

can occur with patellofemoral pain.

Diagnosis often includes examining how the knee moves during activities such as walking, squatting or stair climbing.

Imaging is not automatically necessary.

What if My Knee Hurts Going Down Stairs?

Going downstairs places significant demand on the kneecap and surrounding muscles.

Pain can be associated with:

• Patellofemoral pain
• Arthritis
• Meniscus problems
• Other knee conditions

If the pain persists, an examination can help distinguish between these possibilities.

What if My Knee Hurts When I Bend and Straighten It?

Pain with bending and straightening can occur with:

• Patellofemoral problems
• Meniscus injury
• Arthritis
• Swelling
• Tendon problems

The important additional questions include:

• Is there swelling?
• Does the knee lock?
• Is there clicking or catching?
• Was there an injury?
• Can you fully straighten it?

What if the Pain Is on the Inside of My Knee?

Inner knee pain may arise from:

• Medial meniscus
• Medial collateral ligament
• Arthritis
• Tendons or bursae
• Other structures

The exact diagnosis depends on the pain pattern and physical examination.

What if the Pain Is Behind My Knee?

Pain behind the knee can arise from several structures.

Possible causes include:

• Baker cyst
• Tendons
• Meniscus problems
• Joint swelling
• Other conditions

If there is significant calf swelling or sudden unexplained pain, more urgent assessment may sometimes be needed to exclude non-musculoskeletal causes.

What if My Knee Keeps Giving Way?

Instability deserves assessment.

Possible causes include:

• Ligament injury
• Muscle weakness
• Pain-related inhibition
• Meniscus problems

Mayo Clinic lists instability or the sensation that the knee is giving way among reasons to seek medical evaluation.

What if My Knee Locks?

True locking means the knee becomes mechanically stuck and cannot fully bend or straighten.

This can occur with certain:

• Meniscus injuries
• Loose bodies
• Other internal joint problems

Persistent locking should be medically assessed.

What if My Knee Is Swollen?

Swelling can occur with:

• Injury
• Arthritis
• Meniscus damage
• Ligament injury
• Gout
• Infection
• Other inflammatory conditions

The cause matters.

A swollen knee may sometimes require imaging, blood tests or removal and analysis of joint fluid depending on the clinical situation.

When Is Knee Pain More Urgent?

Seek prompt medical attention if you:

• Cannot bear weight
• Cannot fully bend or straighten the knee
• Have major swelling
• Have obvious deformity
• Have severe pain after injury
• Have redness, warmth and fever
• Heard a pop during a major injury and cannot use the knee normally

These are recognised warning signs requiring earlier medical evaluation.

Should I See a Physiotherapist First?

For some straightforward musculoskeletal problems, that can be reasonable.

Physiotherapy is commonly helpful for:

• Strengthening
• Improving movement
• Restoring function
• Returning to activity

However, medical assessment may be particularly useful first if:

• You are unsure of the diagnosis
• Pain followed significant trauma
• The knee is very swollen
• You cannot bear weight
• The knee locks
• There is significant instability
• Symptoms are not improving
• You may need medication or imaging

What if I Already Tried Physiotherapy and My Knee Is Still Painful?

This is a common situation.

The next step should not necessarily be:

“Buy another physiotherapy package and keep doing the same thing.”

Instead, it may be useful to ask:

• Was the original diagnosis correct?
• Is there a meniscus or ligament problem?
• Is significant arthritis present?
• Is the kneecap the main source?
• Would imaging change treatment?
• Does the rehabilitation programme need to change?

A medical reassessment can help answer these questions.

Do I Need an X-Ray?

X-ray can be useful for:

• Fractures
• Osteoarthritis
• Bone abnormalities
• Joint alignment

For suspected arthritis, X-ray can show changes such as narrowing of the joint space and bone spurs.

It does not provide the same level of detail for:

• Meniscus
• Ligaments
• Tendons
• Cartilage

When Is Ultrasound Useful?

Ultrasound can show soft tissues around the knee in real time.

It may be useful for assessing:

• Tendons
• Some ligament problems
• Fluid collections
• Bursa
• Other superficial soft tissues

Mayo Clinic notes that ultrasound can be used to examine soft tissues around the knee dynamically.

When Is MRI Useful?

MRI is particularly useful when the question involves internal knee structures such as:

• Meniscus
• ACL or other ligaments
• Cartilage
• Tendons
• Muscles
• Bone marrow

RadiologyInfo notes that knee MRI provides detailed images of cartilage, ligaments, tendons, muscles and bone, and is commonly used to investigate pain, weakness, swelling, sports injuries and knees that give way.

Does Everyone With Knee Pain Need MRI?

No.

Many knee problems can be diagnosed from:

• History
• Physical examination
• X-ray where appropriate

MRI becomes more useful when:

• The diagnosis remains unclear
• A soft-tissue injury is suspected
• Significant symptoms persist
• Surgery is being considered
• Imaging would change treatment

Even knee osteoarthritis often does not require MRI unless the case is more complex or another problem is suspected.

Should I Get an MRI Before Seeing a Doctor?

Usually, it makes more sense to have the knee assessed first.

The reason is simple:

The correct scan depends on the clinical question.

For example:

• Suspected arthritis may initially need an X-ray
• A superficial tendon problem may be assessed with ultrasound
• Suspected meniscus or ligament injury may be better assessed with MRI

Ordering the wrong scan can add cost without necessarily answering the important question.

Does Knee MRI Use Radiation?

No.

MRI uses a magnetic field and radiofrequency energy rather than ionising radiation.

What Can a Knee MRI Show?

A knee MRI can provide detailed assessment of:

• Meniscus
• ACL
• PCL
• Collateral ligaments
• Cartilage
• Tendons
• Muscles
• Bone marrow
• Joint fluid

It may also help evaluate injuries not visible on ordinary X-rays.

Does an MRI Result Automatically Mean I Need Surgery?

No.

Imaging findings must be interpreted together with:

• Your symptoms
• Examination
• Age
• Activity level
• Functional limitations

An abnormal MRI does not automatically require an operation.

Many knee problems can still be treated using:

• Physiotherapy
• Activity modification
• Strengthening
• Medication where appropriate
• Other non-surgical treatments

What Type of Treatment Might Be Recommended?

Treatment depends on the diagnosis.

Options may include:

• Activity modification
• Physiotherapy
• Strengthening
• Medication where appropriate
• Selected injections
• Other non-surgical treatments
• Orthopaedic referral

There is no single treatment that is appropriate for every painful knee.

Should I See a Doctor if My Knee Pain Has Lasted for Months?

Yes, particularly if it is affecting:

• Walking
• Stairs
• Work
• Sleep
• Exercise
• Normal daily activities

Persistent knee pain deserves a diagnosis rather than simply being accepted as part of ageing.

Should Older People Automatically Assume Knee Pain Is Arthritis?

No.

Age increases the likelihood of osteoarthritis, but older adults can also develop:

• Tendon problems
• Meniscus problems
• Bursitis
• Gout
• Other conditions

Likewise, imaging findings of arthritis do not necessarily explain every symptom.

The examination still matters.

Which Doctor Should I See if I Want to Avoid Surgery?

You do not necessarily need to begin with a surgeon.

A licensed medical doctor who manages musculoskeletal problems can assess the knee, organise appropriate imaging where needed and begin non-surgical management.

If the examination or imaging suggests that surgery may genuinely be appropriate, an orthopaedic referral can then be arranged.

Which Doctor Should I See if I Think I Need an MRI?

It is useful to first see a doctor who can determine:

• Whether MRI is actually the best test
• Which part of the knee needs assessment
• Whether an X-ray or ultrasound would answer the question
• Whether MRI findings would change treatment

This can reduce unnecessary imaging while helping patients who do need MRI obtain it promptly.

How Much Does a Knee MRI Cost in Singapore?

For many patients arranging a knee MRI through The Pain Relief Clinic, the current price is approximately:

S$1,000

This generally includes:

• MRI examination
• MRI images
• Formal radiologist’s report

Eligible outpatient diagnostic scans may qualify for up to:

S$600 per patient per year from MediSave

subject to prevailing requirements and remaining annual limits.

Singapore’s Ministry of Health currently allows up to S$600 per patient per year from MediSave for eligible outpatient scans used to diagnose or treat a medical condition. The annual limit was increased from S$300 on 1 January 2026.

How Quickly Can I Get a Knee MRI?

When MRI is medically appropriate, The Pain Relief Clinic can often arrange knee imaging:

Within one working day

subject to:

• MRI safety screening
• Correct imaging protocol
• Appointment availability

Frequently Asked Questions About Which Doctor to See for Knee Pain

Should I see a GP or an orthopaedic surgeon for knee pain?

For many knee problems, a GP or other licensed medical doctor can provide the initial assessment. Orthopaedic review becomes more relevant when significant structural injury, severe arthritis or possible surgery needs to be considered.

Can a physiotherapist diagnose knee pain?

Physiotherapists can assess musculoskeletal movement and function and play an important role in rehabilitation. Medical review can add value when the diagnosis is uncertain, symptoms are severe, imaging may be required or treatment is not working.

When should I see a doctor for knee pain?

Seek assessment if knee pain is persistent, affects normal activities, causes instability or locking, or is associated with significant swelling. Inability to bear weight, deformity, severe post-injury pain or a red, hot knee with fever require earlier assessment.

Do I need an MRI for knee pain?

Not automatically. MRI is particularly useful when meniscus, ligament, cartilage or other soft-tissue injury is suspected, or when persistent symptoms remain unexplained.

Is X-ray or MRI better for knee pain?

They answer different questions. X-ray is useful for bones and arthritis, while MRI provides much greater detail of the meniscus, ligaments, cartilage and other soft tissues.

Does knee MRI use radiation?

No. Knee MRI does not use ionising radiation.

How much does a knee MRI cost?

A knee MRI arranged through The Pain Relief Clinic is currently approximately S$1,000, including scan images and a formal radiologist’s report.

Can I use MediSave for a knee MRI?

Eligible outpatient diagnostic scans may qualify for up to S$600 per patient per year from MediSave, subject to prevailing rules and remaining withdrawal limits.

Not Sure Who to See for Your Knee Pain?

You do not necessarily need to decide by yourself whether the answer is physiotherapy, an MRI or an orthopaedic surgeon.

A useful first step is to determine:

• What is most likely causing the knee pain
• Whether there are warning signs
• Whether physiotherapy is appropriate
• Whether imaging is needed
• Which imaging test would be most useful
• Whether non-surgical treatment is reasonable
• Whether an orthopaedic referral is necessary

At The Pain Relief Clinic, knee pain can be assessed by a licensed medical doctor with access to in-house physiotherapy and fast diagnostic imaging where medically appropriate.

Knee pain assessment through The Pain Relief Clinic

• Medical assessment by a licensed medical doctor
• In-house physiotherapy
• Assessment of knee movement, strength and stability
• Review of previous treatment
• Non-surgical treatment where appropriate
• Fast access to X-ray, ultrasound or MRI when indicated
• Knee MRI often available within one working day
• Approximately S$1,000 for many knee MRI examinations
• Up to S$600 MediSave for eligible outpatient diagnostic scans
• Formal radiologist’s report
• Orthopaedic referral when appropriate

Arrange a Knee Pain Assessment

The Pain Relief Clinic

Call / WhatsApp: +65 9068 9605

If you are unsure whether your knee pain needs physiotherapy, an MRI, another non-surgical treatment or an orthopaedic opinion, contact us for an assessment and a practical next-step plan.

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References

1. Mayo Clinic — Knee Pain: Symptoms and Causes.
2. Mayo Clinic — Knee Pain: Diagnosis and Treatment.
3. Mayo Clinic — Osteoarthritis: Diagnosis and Treatment.
4. Mayo Clinic — Patellofemoral Pain Syndrome: Diagnosis and Treatment.
5. RadiologyInfo.org, American College of Radiology and Radiological Society of North America — Knee MRI, reviewed 15 June 2026.
6. Singapore Ministry of Health — Outpatient Care, updated 1 June 2026.
7. Singapore Ministry of Health — Adequacy of S$600 Annual MediSave Withdrawal Limit for Outpatient CT and MRI Scans, 6 August 2026.

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Important Medical Information

This article provides general educational information and does not replace an individual medical consultation.

Knee pain can arise from joints, cartilage, ligaments, tendons, muscles, bursae, inflammatory conditions or other causes. The appropriate healthcare professional and investigation depend on how the pain started, examination findings, severity and treatment response.

Imaging is not required for every case of knee pain. X-ray, ultrasound and MRI answer different clinical questions.

Seek prompt medical attention for inability to bear weight, obvious deformity, severe pain after significant injury, major swelling, inability to fully move the knee, or a red and hot knee associated with fever.

Reviewed by Dr Terence Tan, Founder of The Pain Relief Clinic — 18 September 2026