ACL Tear Treatment in Singapore

An anterior cruciate ligament (ACL) tear can be a life-changing injury that affects your mobility, sports participation, and daily activities. Whether you’re an athlete concerned about returning to sport or someone who wants to walk without pain or instability, understanding your treatment options is crucial for making informed decisions about your knee health. Our Senior Consultant Orthopaedic Surgeon specialises in diagnosing and treating ACL injuries using evidence-based approaches tailored to your specific needs and activity goals.

Dr Zackary Chua

Senior Consultant Orthopaedic Surgeon (Adult & Paeds)

MBBS (Aus)MMed (SG)MRCS (Glasgow)FRCSEd (Orth)

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Types Causes & Risks Symptoms When to see a Doctor Diagnosis Treatment Complications Prevention FAQ Conclusion

What is an ACL Tear?

The ACL is one of four major ligaments in your knee that provide stability during movement. An ACL tear occurs when this ligament is stretched beyond its capacity and partially or completely ruptures. This injury is common in Singapore’s active population, with studies showing approximately 100-200 ACL injuries per 100,000 people annually. The ACL prevents your shinbone (tibia) from sliding forward relative to your thighbone (femur) and provides rotational stability to the knee joint.

Types of ACL Tears

Partial ACL Tear

A partial tear involves damage to only a portion of the ligament fibres. The ligament remains partially intact but is stretched and weakened. These injuries account for approximately 10-25% of all ACL injuries and can sometimes be managed without surgery, depending on the extent of damage and patient activity level.

Complete ACL Tear

A complete tear means the ligament has ruptured entirely and separated into two pieces. This is the more common type. Complete tears typically result in significant knee instability and often require surgical intervention for active individuals.

Associated Injuries

ACL tears frequently occur alongside other knee injuries. Some patients also experience bone bruising or cartilage damage at the time of injury.

Causes

Sudden stops or changes in direction during sports activities
Landing awkwardly from a jump
Direct collision or impact to the knee
Hyperextension of the knee joint
Pivoting with the foot firmly planted while the body rotates

Risk Factors

Participation in high-risk sports (football, basketball, netball, skiing)
Female gender (2-8 times higher risk than males)
Previous ACL injury in either knee
Family history of ACL tears
Poor neuromuscular control and biomechanics
Weak hamstring and quadriceps muscles
Anatomical factors (narrow intercondylar notch, increased tibial slope)
Playing on artificial turf versus natural grass

Signs & Symptoms

Immediate Symptoms (At Time of Injury)

Audible “pop” or popping sensation in the knee
Severe pain and inability to continue activity
Rapid swelling within 2-4 hours
Feeling of the knee “giving way”
Loss of full range of motion

Early Symptoms (First 1-2 Weeks)

Persistent swelling and stiffness
Pain with weight bearing
Difficulty fully straightening the knee
Tenderness along the joint line
Bruising around the knee

Chronic Symptoms (If Left Untreated)

Recurring episodes of knee instability
Knee buckling during daily activities
Difficulty with stairs or uneven surfaces
Progressive loss of confidence in the knee
Development of secondary arthritis

The classic presentation involves hearing or feeling a “pop” during a twisting injury, followed by immediate pain and rapid swelling. Most patients cannot continue their activity and experience significant disability in the following days.

Experiencing these symptoms? Please don’t wait for them to worsen.

Learn more about your ACL injury and explore treatment options tailored to your lifestyle. Schedule a consultation with our Senior Consultant Orthopaedic Surgeon for a timely diagnosis and personalised treatment plan.

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When to See a Doctor

If you experience a popping sensation in your knee followed by pain and swelling, please seek immediate medical attention. Early diagnosis is crucial as delayed treatment can lead to additional damage to the meniscus and cartilage. You should also consult an orthopaedic surgeon if you experience recurring knee instability, difficulty with daily activities, or inability to return to sports despite rest.

During your first consultation, the orthopaedic surgeon will perform a detailed physical examination, including specific tests like the Lachman test, anterior drawer test, and pivot shift test. They will also review your injury mechanism and symptoms. Most patients can expect to receive a preliminary diagnosis during this visit, with imaging ordered to confirm the extent of injury and plan treatment.

Diagnosis & Testing Methods

Clinical Examination: The orthopaedic surgeon performs specific physical tests to assess ligament integrity. The anterior drawer and pivot shift tests provide additional diagnostic information about knee stability.
MRI Scanning: Magnetic resonance imaging (MRI) is the gold standard for confirming ACL tears and evaluating associated injuries. MRI can detect ACL tears with 90-95% accuracy and reveal damage to menisci, cartilage, and other ligaments. No special preparation is required, and results are typically available within 1-2 days.
X-rays: While X-rays cannot visualise the ACL itself, they are essential for ruling out fractures and assessing overall knee alignment. They may show avulsion fractures where the ACL pulls off a piece of bone, particularly in younger patients.
Arthroscopy: In some complex cases, diagnostic arthroscopy may be performed. This minimally invasive procedure allows direct visualisation of the ligament and can be converted to a therapeutic procedure if appropriate.

Treatment Options Overview

Conservative Management

Conservative treatment involves structured rehabilitation without surgery. This approach focuses on strengthening the muscles around the knee to compensate for the torn ACL. Patients undergo physiotherapy 2-3 times weekly for 3-6 months, progressing through a range of motion exercises, strength training, and functional activities. This option suits patients with partial tears, lower activity demands, or those who achieve good stability through rehabilitation.

Physiotherapy and Rehabilitation

Whether pursuing surgical or non-surgical treatment, physiotherapy is essential. Pre-surgical physiotherapy (prehabilitation) improves surgical outcomes by reducing swelling and restoring range of motion. The rehabilitation programme includes neuromuscular training, proprioception exercises, and sport-specific training for athletes. Most patients require 6-12 months of guided rehabilitation.

ACL Reconstruction Surgery

Surgical reconstruction involves replacing the torn ACL with a graft. The procedure is performed arthroscopically through small incisions. Graft options include hamstring tendons, patellar tendon, or quadriceps tendon from the patient (autograft), or donor tissue (allograft). The choice depends on patient age, activity level, and surgeon recommendation. Surgery typically takes 1-2 hours under general anaesthesia.

Graft Selection Options

In Singapore, hamstring tendon grafts are commonly used and are generally recognised for providing good strength and a lower likelihood of anterior knee pain compared with some other graft types. Patellar tendon grafts can provide reliable stability but may be linked to kneeling discomfort. Quadriceps tendon grafts are increasingly used because of their favourable biomechanical characteristics. Donor tissue (allograft) may also be considered in revision procedures or in selected patients, such as older individuals.

Biologics and Augmentation

Platelet-rich plasma (PRP) injections may enhance healing in partial tears or augment surgical reconstruction. Some surgeons use biological scaffolds or growth factors to improve graft integration potentially. These adjunct treatments are individualised based on patient factors and injury characteristics.

Bracing and Support

Functional knee braces may provide additional stability during the rehabilitation phase or for patients choosing non-surgical management. Custom-fitted braces offer better support than off-the-shelf options. Bracing cannot replace the function of an intact ACL and is typically used as an adjunct to other treatments.

Every patient’s condition is unique

Our orthopaedic surgeon will assess your specific situation and recommend the most suitable treatment approach for you.

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Complications if Left Untreated

If left untreated, ACL tears can increase the risk of additional knee damage over time. Research suggests that an unstable knee may develop abnormal movement patterns, which can contribute to progressive meniscal injuries. Repeated episodes of subluxation may also damage the cartilage and accelerate the development of post-traumatic osteoarthritis.

Long-term consequences may include chronic knee instability affecting everyday activities such as walking on uneven ground or climbing stairs. Some individuals develop compensatory movement patterns that place extra stress on the hip or ankle joints. This can also affect confidence in physical activities and overall quality of life. Early arthritis development may, in some cases, lead to joint replacement surgery at a younger age than typically expected.

Prevention

Primary Prevention Strategies: ACL injury prevention programmes can reduce injury risk by 50-70% when implemented correctly. These programmes focus on neuromuscular training, including proper landing techniques, cutting and pivoting mechanics, and core strengthening. Female athletes benefit from prevention programmes addressing their higher injury risk.
Training Modifications: Proper warm-up routines incorporating dynamic stretching and activation exercises prepare the knee for activity. Strength training should emphasise hamstring development to balance quadriceps dominance. Plyometric exercises improve landing mechanics when progressed appropriately.
Equipment and Environmental Factors: Appropriate footwear for specific sports and playing surfaces reduces injury risk. Some studies suggest specific cleat designs may increase ACL injury risk on artificial turf. Maintaining good playing surface conditions and avoiding participation when fatigued also contribute to injury prevention.

Anterior Cruciate Ligament (ACL) Tear

Frequently Asked Questions

Can an ACL tear heal on its own without surgery?

The ACL has poor blood supply and limited healing capacity, meaning complete tears do not heal on their own. Some patients with partial tears or those with lower activity demands can function well without surgery through comprehensive rehabilitation. The decision depends on factors including age, activity level, knee stability, and associated injuries. Your orthopaedic surgeon will assess whether non-surgical management is appropriate for your specific situation.

How long does recovery take after ACL reconstruction surgery?

Recovery follows a structured timeline, though individual progression varies. Most patients achieve basic daily activities within 3-4 months, return to straight-line running at 4-6 months, and resume sports participation at 9-12 months post-surgery. Professional athletes may require 12-18 months for complete recovery. Factors affecting recovery time include graft type, rehabilitation compliance, and individual healing capacity. Rushing return to sports increases re-injury risk significantly.

Can I return to sports after an ACL tear?

Returning to sports is possible for many individuals after an ACL injury, but the timeline and activity level vary depending on the treatment approach and individual factors. Non-surgical management may enable a return to selected activities but usually not to high-demand pivoting sports. Decisions about return-to-sport are based on functional testing, strength symmetry, and psychological readiness. Your orthopaedic surgeon and physiotherapist can help guide this process.

What is the difference between ACL repair and ACL reconstruction?

ACL repair involves suturing the torn ligament ends together, while reconstruction replaces the torn ACL with a graft. Historically, repair showed poor results because of inadequate healing. Newer repair techniques for specific tear patterns show promise in selected patients. Reconstruction remains the gold standard for the most complete ACL tears. Your surgeon will determine if you’re a candidate for repair based on tear location, timing, and tissue quality.

Will I develop arthritis after an ACL tear?

Risk factors include associated meniscal damage, cartilage injury, and treatment delays. While surgical reconstruction doesn’t eliminate arthritis risk, it may reduce it by restoring knee stability and preventing secondary damage. Maintaining a healthy weight, staying active, and following proper rehabilitation protocols can help minimise arthritis development.

Conclusion

An ACL tear is a significant knee injury that requires timely assessment and appropriate management to help reduce the risk of longer-term knee problems. Receiving a diagnosis can feel overwhelming, but several management approaches may be considered depending on the individual. These may include non-surgical care or surgical reconstruction. Recovery is influenced by accurate diagnosis, individualised treatment planning, and adherence to a structured rehabilitation programme. With appropriate care and rehabilitation, many individuals are able to work towards returning to their usual activities and maintaining knee function over time.

Take the First Step Towards Better Health

Get a precise diagnosis and understand your treatment options for ACL injuries. Our Senior Consultant orthopaedic surgeon provides evidence-based care for knee ligament injuries.

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Dr Zackary Chua (蔡克祥医生)

Senior Consultant Orthopaedic Surgeon (Adult & Paeds)

MBBS (AUS)|MMed (Singapore)|MRCS (Glasgow)|FRCSEd (Orth)

A senior consultant orthopaedic surgeon with dual specialisations in Foot & Ankle Surgery and Paediatric Orthopaedics. Backed by his extensive years of training and experience, Dr Chua brings the necessary knowledge and skills to ensure a smooth recovery journey.

Rooted firmly by two fundamental philosophies: “When one’s feet hurt, one hurts all over” and “Children are not little adults”, Dr Chua’s approach to patient care reflects his compassionate care for adults and children.

Singhealth Quality Excellence Award – Silver (2011)
Service From the Heart Award (2021)
Singapore Health Quality Service Award – Gold (2023)
NUS Medicine Dean’s Award for Teaching Excellence (2023)

His active participation in the medical community extends to mentoring, research supervision, and contributions to key professional forums and symposiums, both locally and internationally.