Understanding Knee Pain: Symptoms, Causes and Diagnosis

Knee pain is a common complaint that affects people of all ages in Singapore, from active athletes to seniors navigating daily life. Whether it’s a dull ache while climbing HDB stairs, stiffness after a long day at the office, or sharp pain from a sports injury, knee pain can disrupt your routine and limit mobility. As the body’s largest joint, the knee is prone to injuries, overuse, and conditions like arthritis, making it essential to understand its symptoms and causes. 

Read along further to find the symptoms, causes, and diagnosis of knee pain in Singapore. Read more about knee pain treatment in Singapore. 

Knee Pain Symptoms

Knee pain typically manifests in one or more of the following symptoms:

• Pain while bending the knee
• Tender to touch
• Inability to fully straighten the knee joint
• Swelling and stiffness
• A popping sound coming from the knee joint
• An inability or difficulty to put weight on the affected knee
• Weakness of instability in the knee

Causes of Knee Pain

Knee pain can be caused by various factors, including mechanical wear and tear, injuries or trauma, and stress produced on the knee structures because of the ageing process. The causes of knee pain can be classified as under:

Arthritis

Arthritis is a degenerative process that can affect the knees and cause inflammation, pain, and stiffness. There could be different types of arthritis:

• Osteoarthritis: This is the most common type of arthritis where the cartilage lining the joints in the knee gets worn out. The bones of the knee then rub together without any cushioning resulting in pain and inflammation. Osteoarthritis is most common in middle-aged and older people. Risk factors for osteoarthritis include being overweight and repeated stress and injuries to the knee.
• Rheumatoid Arthritis: Rheumatoid arthritis is an autoimmune disease that usually affects young people. The immune system starts attacking the knee cartilage and adjacent tissues causing swelling and pain in the knees.
• Post-Traumatic Arthritis: Post-traumatic arthritis occurs in the affected joints of the knees after an injury resulting in knee pain.

Ligament Injuries

Ligament injuries are common among athletes and active individuals. The most common types of knee ligament injuries are:

• Anterior Cruciate Ligament (ACL): A tear or sprain in the ACL often occurs during sports that involve sudden stops or changes in direction, like soccer or basketball. Get the treatment with our ACL tear doctor in Singapore.
• Medial Collateral Ligament (MCL): This ligament can be injured through impact to the outer knee, commonly occurring in contact sports.

Meniscus Tears

The meniscus is a C-shaped piece of cartilage in the knee joint that acts as a cushion between the femur (thigh bone) and tibia (shinbone). A meniscus tear can occur from twisting or turning quickly, often during sports. It causes pain, swelling, and difficulty moving the knee.

Patellar Tendonitis (Jumper’s Knee)

Patellar tendonitis, also known as jumper’s knee, is an overuse injury affecting the tendon connecting the kneecap (patella) to the shinbone (tibia). This type of knee pain and condition is common in athletes who perform repetitive jumping motions, such as basketball or volleyball players.

Bursitis

Bursae are small, fluid-filled sacs that cushion the knee joint. Inflammation of these sacs, known as bursitis, can occur due to repetitive kneeling, prolonged pressure on the knee, or injury. Bursitis can cause swelling, warmth, and pain at the front of the knee.

Knee Fractures

Knee fractures are most commonly caused by a direct blow or fall. Such fractures are often accompanied by severe pain, swelling, and the inability to move or bear weight on the affected knee.

Knee Dislocation

When the bones of the knee are forced out of their normal position, often due to trauma or high-impact injuries like car accidents or sports injuries, it can cause knee dislocation. It causes immediate, intense pain and requires emergency medical attention.

Tendinitis

Tendinitis refers to inflammation or irritation of the tendons in the knee. It often affects athletes or those who perform repetitive knee movements, leading to pain, swelling, and tenderness around the knee joint.

Iliotibial Band Syndrome (ITBS)

Iliotibial Band Syndrome occurs when the iliotibial band, a thick band of tissue running along the outside of the thigh, becomes tight and rubs against the outer part of the knee. It is a common overuse injury among runners and cyclists, causing pain on the outer side of the knee.

Gout

Gout is another cause of knee pain. It is a type of arthritis caused by the buildup of uric acid crystals in the joints, including the knee. It can lead to sudden and severe pain, swelling, redness, and warmth in the affected area. Gout attacks can be triggered by diet, alcohol consumption, and other factors.

Infections

Infections in the knee joint (septic arthritis) can cause pain, swelling, redness, and fever. Knee infections are rare but require immediate medical treatment to prevent long-term damage to the joint.

Diagnosing Knee Pain in Singapore

If you are experiencing knee pain, it is always a good idea to get a diagnosis and treatment from a knee pain specialist in Singapore so that adequate treatment can be started. Diagnosis typically comprises a knee pain doctor carrying out a physical exam, ordering a few imaging tests, and then diagnosing the condition and advising treatment accordingly.

When Should I See a Doctor for Knee Pain?

It is advised to consult a knee pain doctor if you experience one or more of the following symptoms.

• Your discomfort persists beyond a few days.
• The pain is overwhelming and doesn’t go away with rest.
• There is significant swelling in your knee.
• Your ability to walk is limited.
• Your knee locks or buckles.
• The pain is from a major trauma or sudden accident.

When Is Knee Pain an Emergency?

Certain injuries like bone spurs can’t wait for a scheduled appointment. It’s crucial to look for a chiropractor or orthopaedic treatment if you’re dealing with any of the following issues:

• Deformity
• Popping sound during your injury
• Can’t put any weight
• Locked knee (can’t be bent or straightened)
• Sharp and severe pain
• Sudden swelling

Frequently-Asked Questions

How to relieve knee pain at home?

From ice and heat therapy to elevating the knee, orthotics, and weight management; all are efficient ways to cater to at-home knee injury treatment. If you are suffering from mild pain, then strengthening and low-impact exercises such as yoga and pilates, can be effective. These improve blood circulation, reduce pain and offer stability to the knee joint in the optimum way. Your knee pain specialist can guide you on what home remedies you can do and the activities that you should avoid that trigger pain.

Can I stay active with knee pain?

Your recommended activity level depends entirely on the severity of the issue. Minor pain may allow for a range of low-impact activities like walking or swimming. However, sudden movements of the knee joint during the healing process should be avoided. In order to fully recover, the route of immobilisation for a recommended period of time should be adopted. It is advised to follow your knee specialist's recommendations and guidelines in terms of exercise and medication to ensure effective healing and recovery.

What can cause knee pain without injury?

Overuse of the knee joint, backer’s cyst, Iliotibial band syndrome and certain infections can cause sudden knee pain without injury. For this, knee pain treatment in Singapore through our clinic helps address such issues through our specialised doctors who provide customised medication and treatment plans accordingly. 

Can knee pain progress to arthritis over time?

Yes, significant injuries, certain surgeries, or repetitive overuse of your knee can raise your risk of developing osteoarthritis in the future. Maintaining a healthy weight and building cartilage-protecting habits early helps mitigate this risk. One of the effective things that you can do to prevent long-term pain is to quickly address issues when they arise. 

How do knee braces help manage knee pain?

Knee braces provide extra joint support and stability for weak or injured knees. They transfer weight away from damaged cartilage and limit painful motions. Braces also aid recovery after surgery. Some braces apply adjustable compression or heat. Consistent brace use can help relieve pain.

What are the diagnostic procedures in Singapore for knee pain?

Doctors in Singapore typically use physical examinations, X-rays, MRI scans, or CT scans to diagnose the cause of knee pain. These help assess the extent of the injury or condition.

Are there knee pain specialists in Singapore?

Yes, Singapore has many orthopaedic specialists and physiotherapists who can provide expert care for knee pain. Clinics like Ray of Health focus on diagnosing and treating knee-related conditions.