Month: April 2025

Knee pain when bending is a common issue that can affect people of all ages. A knee pain specialist can help identify the underlying cause when symptoms persist or interfere with daily activities. Whether it occurs while squatting, climbing stairs, or sitting down, this discomfort can interfere with daily activities. This article explores common causes of knee pain, explaining how different conditions may contribute to discomfort and when medical advice may be needed.

Possible Causes of Knee Pain When Bending

Patellofemoral Pain Syndrome (Runner’s Knee)

Patellofemoral pain syndrome refers to pain around the front of the knee, particularly where the kneecap (patella) meets the thigh bone (femur). It is often linked to repetitive stress or improper kneecap alignment.

Overuse and Repetitive Movements

Activities such as running, cycling, or frequent squatting can place excessive strain on the knee joint, leading to irritation.

Muscle Imbalances

Weak thigh muscles may affect kneecap tracking, increasing stress on the knee. Strengthening exercises for the quadriceps can help stabilise the joint.

Poor Biomechanics

Issues such as flat feet or improper walking posture can contribute to patellofemoral discomfort.

Osteoarthritis

Osteoarthritis occurs when the protective cartilage in the knee joint gradually wears down, leading to pain and stiffness, especially during movement.

Cartilage Degeneration

As the cushioning layer between bones diminishes, friction increases, causing discomfort when bending or straightening the knee.

Morning Stiffness and Swelling

Symptoms may be more noticeable after periods of inactivity and can worsen with prolonged use.

Age and Activity-Related Wear and Tear

Although more common in older adults, osteoarthritis can also develop due to past injuries or prolonged high-impact activities.

Meniscus Tears

The meniscus is a C-shaped soft tissue structure that cushions the knee joint. Tears in this structure can occur due to sudden twisting motions or gradual degeneration.

Acute Injury or Trauma

A meniscus tear often happens during sports or activities that involve sudden knee rotation. Meniscus injuries may occur alongside an ACL tear Singapore patients commonly experience during sports involving sudden pivoting, twisting, or changes in direction.

Clicking or Locking Sensation

Some individuals experience difficulty fully extending or bending the knee due to a displaced meniscus fragment.

Pain Along the Joint Line

Discomfort is often felt along the inside or outside of the knee, particularly when squatting or twisting. Discomfort is often felt along the inside or outside of the knee, particularly when squatting or twisting. In cases where symptoms persist despite conservative treatment, meniscus surgery Singapore may be recommended to restore knee function and reduce pain.

Tendonitis (Jumper’s Knee)

Tendonitis occurs when the tendons surrounding the knee become inflamed due to overuse or repetitive strain. The patellar tendon, which connects the kneecap to the shinbone, is most commonly affected.

Pain Just Below the Kneecap

Discomfort often worsens with jumping, running, or prolonged kneeling.

Inflammation and Tenderness

Swelling or sensitivity around the tendon is common, especially after activity.

Gradual Onset

Unlike acute injuries, tendonitis often develops over time due to repetitive stress rather than a sudden event.

Bursitis

Bursae are small fluid-filled sacs that cushion the knee joint. Inflammation of these sacs, known as bursitis, can cause pain and swelling, particularly when bending or kneeling.

Frequent Kneeling or Direct Pressure

Jobs or activities that require prolonged kneeling, such as gardening or carpentry, can increase the risk of bursitis.

Swelling and Warmth Around the Knee

The affected area may appear swollen and feel warm to the touch.

Pain with Movement

Bending the knee or applying pressure can worsen symptoms, making daily tasks uncomfortable.

When to Seek Medical Advice

While occasional knee discomfort may resolve with rest and activity modification, some symptoms indicate the need for medical assessment. Consider consulting a specialist if you experience:

Severe or Persistent Pain

Pain that does not improve with rest or over-the-counter medication may indicate an underlying issue requiring treatment.

“Tightness”, Swelling or Warmth Around the Joint

Significant swelling, redness, or warmth could suggest inflammation, infection, or fluid build-up in the knee.

Clicking, Locking, or Instability

If the knee feels like it might give way, locks in place, or produces a clicking sensation with movement, structural damage may be present.

Difficulty Bearing Weight

If putting weight on the affected leg causes pain or instability, it is best to seek medical attention.

A timely assessment can help determine the cause of knee pain and guide appropriate management.

Conclusion

Knee pain when bending can stem from various conditions, ranging from overuse injuries to degenerative changes. Identifying the cause is the first step in finding effective relief, whether through lifestyle modifications, physiotherapy, or medical treatment.

If knee pain is persistent or interfering with daily activities, schedule a consultation to discuss assessment and management options.

The anterior cruciate ligament (ACL) plays a key part in knee stability and is often affected by injuries, particularly in sports and activities involving sudden movements. A torn ACL can lead to instability, discomfort, and limitations in daily activities or physical pursuits. In many cases, surgery is considered to improve knee function and support a return to an active lifestyle.

This guide provides a thorough overview of ACL surgery Singapore, covering when it may be considered, the different surgical techniques available, the preparation process, and the recovery journey. Consultation with an orthopaedic surgeon Singapore patients trust is an important step in determining the most suitable treatment approach.

The ACL and Its Function

The ACL is one of four primary ligaments in the knee joint, connecting the femur (thigh bone) to the tibia (shin bone). It provides stability by controlling excessive forward movement of the tibia and supporting rotational movements. The ligament is particularly engaged during activities involving sudden stops, directional changes, and jumping.

When the ACL is torn, knee stability may be affected, resulting in difficulties with movement and an increased risk of further knee damage. Depending on the severity of the injury and lifestyle demands, ACL surgery may be an option to restore knee function.

When Might ACL Surgery Be Considered?

Surgical reconstruction of the ACL is typically recommended when non-surgical approaches do not provide sufficient stability. Some common scenarios where surgery may be advised include:

Knee instability in daily movements

If the knee frequently gives way during routine activities, ACL surgery may be considered to improve stability. A knee specialist Singapore patients consult can assess the extent of instability and recommend appropriate treatment options. Persistent instability may also contribute to additional knee injuries, such as damage to the meniscus or cartilage.

Return to sports or active pursuits

Individuals participating in activities requiring sudden turns, jumps, or rapid changes in movement may require surgical reconstruction to improve knee function and reduce the risk of further injury.

Recurrent or complex ACL injuries

Repeated ACL tears or injuries affecting other knee structures may be managed more effectively with surgery compared to non-surgical treatment options.

In general, there are 2 main reasons for considering ACL surgery:

• In the short term, it provides for a stable knee to return to an active lifestyle.
• In the long term, it provides for a stable knee which reduces the risk of a rapid degeneration of the knee over time.

ACL Surgery Techniques

ACL surgery involves different approaches and graft options, with the choice depending on the severity of the injury and patient-specific factors.

ACL Reconstruction vs ACL Repair

ACL Reconstruction

This approach replaces the damaged ligament with a graft and is the most widely performed procedure. It is typically recommended for complete or longstanding ACL tears, as it provides a reliable outcome for restoring knee function.

ACL Repair

In some cases, the torn ligament can be reattached rather than replaced. This technique is generally considered for recent, partial tears where the remaining ligament tissue is in good condition. However, it is not suitable for all injuries.

Graft Options for ACL Surgery

Autografts (patient’s own tissue)

A graft may be taken from the patellar tendon, hamstring tendon, or quadriceps tendon. These grafts provide strong tissue for reconstruction, though recovery may take longer due to healing at the donor site.

Allografts (donor tissue)

Sourced from a donor, allografts eliminate the need for a second surgical site. They may be a suitable option for some individuals, though integration into the knee can take longer.

Preparing for ACL Surgery

Proper preparation before ACL surgery can help optimise the recovery process. Key steps include:

Medical Examination and Assessment

A physical examination is performed to assess knee stability, range of motion, and any swelling or tenderness. Tests such as the Lachman test or pivot shift test help determine the extent of ligament damage and any associated knee conditions.

Imaging (MRI and X-ray)

MRI scans provide detailed images of the ACL and surrounding structures, allowing the surgeon to plan the procedure effectively. X-rays may also be used to assess any involvement of bone structures.

Pre-Operative Requirements

Blood tests and other screenings may be conducted to assess overall health before surgery. Medications that affect blood clotting may need to be reviewed, with temporary adjustments made as required. Strengthening exercises may also be recommended before surgery to support recovery.

What Happens During ACL Surgery?

The surgical procedure follows a structured sequence of steps to ensure the graft is correctly positioned and secured.

Cleaning and Preparing the Joint

The damaged ligament remnants and any loose cartilage or debris are removed to create a clear surgical field. This step helps ensure there are no obstructions to graft placement.

Arthroscopic Assessment

A small camera (arthroscope) is inserted into the knee joint through a keyhole incision, providing a detailed view of the affected structures. This allows the surgeon to assess the extent of the injury and address any additional damage, such as meniscus or cartilage injuries. In some cases, meniscus repair Singapore procedures may be performed alongside ACL reconstruction to restore overall knee function.

Graft Preparation and Placement

The selected graft is prepared and shaped to match the knee’s dimensions. Small tunnels are created in the femur and tibia, allowing the graft to be positioned in line with the original ACL.

Securing the Graft

The graft is fixed in place using screws or other fixation devices to provide stability. The surgeon then tests the graft’s position and tension to ensure it allows for both movement and support.

Final Inspection and Closure

After confirming that the graft is secure, the surgeon inspects the joint before closing the incisions with sutures. A bandage is applied to minimise swelling and protect the knee during the initial healing phase.

Recovering After ACL Surgery

Recovery from ACL surgery requires a structured rehabilitation programme. Physiotherapy plays a key part in regaining knee function, improving mobility, and reducing the likelihood of complications.

Early Post-Operative Care

Crutches and a knee brace are typically used to limit movement and protect the graft during the early healing phase. Pain management may involve prescribed medication and cold therapy to help control discomfort and swelling. Elevating the leg can assist in reducing swelling and preventing stiffness. Follow-up appointments allow the surgeon to monitor progress and adjust care as required.

Recovery Timeline

Recovery progresses in phases, with each stage focusing on specific goals. During the first six weeks, the priority is reducing swelling, protecting the graft, and restoring basic movement through gentle exercises. From six to twelve weeks, muscle strengthening exercises are introduced, and weight-bearing increases gradually. By three to six months, advanced physiotherapy, including sports-specific exercises, may be introduced to support a return to full activity. Safe return to full activities, including contact sports, will typically be close to a year post-surgery.

Potential Risks and Considerations

ACL surgery is generally well tolerated, but as with any procedure, there are some associated risks. These include infection, bleeding, nerve injury and reactions to anaesthesia, which are managed with appropriate care. In some cases, the graft may not fully integrate, requiring further treatment. Knee stiffness can develop if rehabilitation is inadequate, but this can often be improved through physiotherapy.

Reducing the Risk of Future ACL Injuries

Strengthening the muscles around the knee, particularly the quadriceps and hamstrings, can help support the joint. Physiotherapy or structured exercise programmes focusing on strength, flexibility, and movement techniques may reduce the risk of re-injury. Wearing appropriate footwear and avoiding sudden, high-risk movements can also contribute to knee stability.

Conclusion

ACL surgery is a recognised method for improving knee stability following ligament injuries. With appropriate preparation, a structured rehabilitation plan, and commitment to recovery, many individuals regain mobility and return to their desired activities.

If you are considering ACL surgery, schedule a consultation to discuss your treatment options and learn more about the procedure and recovery process.

Running subjects the knee joints to repeated movements that may cause substantial strain over time. Patellofemoral pain syndrome—commonly known as runner’s knee—affects numerous athletes and fitness enthusiasts. This comprehensive guide examines the condition in depth, providing detailed information on its causes, symptoms, diagnosis, treatment options, and preventative techniques to help runners stay active while minimising knee discomfort.

What is Runner’s Knee?

Runner’s knee develops when the kneecap (patella) undergoes undue or incorrect pressure while tracking along the groove in the thigh bone (femur). This misalignment generates pain surrounding or behind the kneecap, notably during activities like running, ascending stairs, or performing squats. The condition may emerge progressively or result from overuse or improper biomechanics.

Recognising Symptoms and Signs

The symptoms of runner’s knee can vary, but generally include the following:

Kneecap Pain

A persistent ache or soreness appears beneath or around the patella, especially during activities that require repeated knee flexion, such as running, squatting or climbing stairs.

Grinding Sensations

The knee may produce grinding, clicking, or popping noises when flexing or extending the leg.

Post-Sitting Discomfort

Discomfort tends to intensify following prolonged periods of sitting with bent knees, commonly termed the ‘theatre sign’.

Mild Swelling

Slight swelling or puffiness may occur around the kneecap, especially after physical exertion.

Contributing Causes of Runner’s Knee

Several factors can influence the development of runner’s knee, including:

Biomechanical Factors

Flat feet, high arches, knock knees, or other alignment variations may disrupt proper patellar tracking.

Training Progression Errors

Sudden increases in running distance, pace, or intensity can overwhelm knee structures, resulting in inflammation or irritation.

Muscle Imbalances

Weakness in the hip abductors, gluteal muscles, or quadriceps, coupled with tight hamstrings or calves, can compromise knee alignment and stability.

Footwear Considerations

Worn-out or unsuitable running shoes may fail to distribute impact properly, increasing stress on the knee joints.

Diagnostic Approaches for Runner’s Knee

An accurate diagnosis of runner’s knee is necessary for effective treatment. A variety of methods are used to assess the condition, including:

Physical Examination

A thorough assessment of knee alignment, flexibility, and movement is conducted. Strength and stability tests are performed to identify weaknesses in the surrounding muscles while observing pain patterns during movements such as squatting or stepping.

Medical History

An in-depth examination of the patient’s running patterns, past injuries, and symptom progression offers important information about the contributing factors. Enquiries frequently focus on any previous knee problems or recent training modifications.

Imaging Studies

X-rays or MRI scans may be recommended to rule out alternative conditions, such as ligament tears or cartilage damage. Imaging is also important when evaluating more serious injuries that may require ACL surgery in Singapore. These images also assist in assessing patellar alignment and overall joint health.

Effective Treatment Strategies

Most instances of runner’s knee can be managed effectively through conservative methods. These approaches form the foundation of knee pain treatment Singapore patients commonly undergo for overuse-related knee conditions.

Rest and Activity Modification

Temporarily reducing or modifying high-impact activities allows for knee healing. Low-impact alternatives such as swimming or cycling may be appropriate during recovery. The rest period is tailored based on symptom severity.

Targeted Strengthening Exercises

Specific exercises strengthen the quadriceps, hip stabilisers, and core muscles. These programmes focus on enhancing muscular coordination, improving flexibility, and rectifying biomechanical imbalances to decrease stress on the patella.

Ice Therapy

Applying a cold compress or ice pack to the knee following activity helps decrease swelling and relieve discomfort. This can be implemented several times daily for 15–20 minutes.

Pain Management

Over-the-counter anti-inflammatory medications, such as ibuprofen, may be recommended to address acute pain and inflammation during the initial treatment phase.

Prevention Strategies for Runners

Preventing runner’s knee requires adopting practices that reduce knee stress while maintaining proper alignment and muscular balance. The key strategies include:

Gradual Training Progression

Build mileage gradually to allow knees and surrounding muscles to adapt properly. A recommended guideline is to increase weekly mileage by no more than 10%.

Regular Strength Training

Incorporate exercises targeting the hip, quadriceps, and core muscles into your routine. This promotes better joint alignment and stability, reducing the likelihood of knee issues.

Proper Footwear Rotation

Replace running shoes if they display signs of wear. Ensure shoes provide adequate cushioning and arch support suited to your foot type.

Surface Variation

Running on different surfaces, such as trails, tracks, and pavement, helps distribute stress more evenly across the joints.

By prioritising these preventative strategies, runners can maintain their activity levels while lowering their chances of developing knee pain.

When Medical Attention Is Recommended

If home remedies do not alleviate symptoms of runner’s knee, professional medical attention may be necessary. Persistent pain that intensifies over time, substantial or increasing swelling, and difficulty walking or bearing weight on the affected leg are all indications to consult a healthcare provider.

Additionally, symptoms such as the knee unexpectedly giving way or locking during movement may signify underlying structural issues that require further evaluation. In some cases, these symptoms may be associated with conditions requiring meniscus injury treatment Singapore patients receive to restore knee function and mobility. Seeking timely medical advice not only ensures an accurate diagnosis but also helps prevent potential complications that could extend recovery or necessitate more intensive treatments.

Conclusion

Runner’s knee represents a common but manageable condition affecting athletes and active individuals. By comprehending its causes and symptoms, implementing effective treatment approaches, and practising preventative measures, most people can recover fully and resume their running routines without long-term restrictions. Addressing the issue promptly and consistently is fundamental to ensuring ongoing knee health.

Schedule a consultation today for a professional assessment and a customised treatment plan to address your running-related knee concerns.