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The Knee

The knee is the largest joint in the human body.


The knee joint also withstands a lot of stress even in daily activities. For example, the pressure on the knees while climbing stairs or running is about 3 x body-weight.


This is one reason why the knee is prone to experiencing wear-and-tear problems.

Common Symptoms & Possible Cause of knee problems

  • Symptoms: Pain on prolonged walking or standing (Click here to learn more)               

    • Possible causes: cartilage or meniscus damage, leading to poorer shock absorption

  • Symptoms: Pain during or after running or exercises (Runner's knee)

    • Possible causes: cartilage damage, including minor thinning of cartilage, tear or ulcer in cartilage 

  • Symptoms: Pain at the front of the knee, when climbing stairs, or getting up after being seated for some time

    • Possible causes: cartilage damage beneath the kneecap

  • Symptoms: Pain when bending knee, or pain when squats(Click here to learn more)

    • Possible causes: cartilage damage beneath the kneecap, meniscus injury

  • Symptoms: Pain at the inner side of knee

    • Possible causes: cartilage wear and tear on inner side of knee, medial ligament injury, meniscus injury

  • Symptoms: Pain at the back of knee

    • Possible causes: meniscus tear, posterior ligament injury, muscle strain

  • Symptoms: Hearing a pop of the knee 

    • Possible causes: ligament tear, meniscus tear​

  • Symptoms: Giving way or ‘weakness’ of the knee

    • Possible causes: ligament tear, meniscus tear, cartilage damage

  • Symptoms: Feeling something move inside the knee

    • Possible causes: loose body inside knee

  • Symptoms: Episodic sharp pain of the knee

    • Possible causes: loose body inside knee, cartilage tear. iliotibial band syndrome

  • Symptoms: Swollen knee(Click here to learn more about Swollen Knee)

    • Possible causes: knee arthritis, gouty attack​

  • Symptoms: Morning stiffness and pain, or pain at night

    • Possible causes: cartilage wear and tear, knee arthritis

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Structure of the Knee

Common knee conditions in our practice:

  • Osteoarthritis -

    • degenerative arthritis of the knee. Various treatment options include oral supplements, lubricant gel and other injections, key-hole procedure to repair knee, or knee replacement.

  • Acute Ligament tears -

    • most common is Anterior Cruciate Ligament (ACL), followed by MCL and PCL. Complete ACL tears are routinely treated with surgery to reconstruct the ligament.

  • Chronic ligament and tendon injuries -

    • sometimes, an acute injury can become chronic causing persistent pain. Treatment options include physiotherapy, injections, and surgical procedures.

  • Cartilage damage -

    • cartilage damage may occur slowly over months or suddenly due to an injury. Cartilage damage should be treated to prevent deterioration to arthritis.  

  • Meniscus tears -

    • commonly occur in middle-aged persons after prolonged walking or a holiday. Similar to cartilage damage, this should be treated to prevent deterioration to arthritis.

  • Abnormal bow-leggedness or knock-knee -

    • the knee can become deformed due to degenerative arthritis. Because these are progressive conditions, they should be treated before they progress and affect walking and mobility.

  • Loose bodies -

    • these are usually bone spurs which break off within the knee. They cause episodic, sharp pains. They should be removed through a standard key-hole procedure.

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MRI Image of torn ACL

Our expertise includes:

- Physiotherapy

- Knee brace fitting

- Aspiration for knee swelling

- Steroid injections

- Lubricant gel injections

- Biological injections to stimulate healing

- Key-Hole Surgeries

- ACL: Single- or Double-bundle

- Ligament tears: MCL, PCL, LCL

- Cartilage Reconstruction  

- Patella Dislocation

- Knee Replacement: Partial or Total, using computer-assisted infra-red technology

Send us an Enquiry in English or Mandarin below. We will reply as soon as possible.

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Frequently-asked Questions

  • What are the treatment methods for knee pain?

  • I have mild pain in the knee. Is it ok to continue with sports?

  • I injured my knee two weeks ago and it is still painful now. Should I get it checked?

  • Do I need a referral letter from my family doctor?

  • Will my insurance cover the treatment?

  • What advanced treatments do you have for my knee?

  • Surgery is a big thing. I am afraid...

Dr Ang CL

About Dr Ang Chia Liang

  • Graduated from National University of Singapore

  • Worked at Singapore General Hospital

  • Worked at The Royal Orthopaedic Hospital in UK

  • Fellow of The Royal College of Surgeons of Edinburgh

  • Fellow of the prestigious  American College of Surgeons.

  • Specialises in Knee injuries, degeneration, and complex knee issues

  • Uses treatments with sound scientific basis

  • Approachable and empathetic

  • Author of numerous book chapters on knee surgeries

Contact Information

38 Irrawaddy Road, Mt Elizabeth Novena Hospital Specialist Centre #07-40
Singapore 329563

We are a 3-min walk from Novena MRT Station. Take Exit A from the station.

Tel: 6970 5835

Fax: 6970 5935    


Opening Hours: Mon - Fri: 9am to 6pm, Sat: 9am to 1pm

Emergency consults, Call/Text/WhatsApp: 9623 7153

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