Lateral Collateral Ligament Tear

What is the Condition?

The lateral collateral ligament (LCL) is a strong band of tissue on the outer side of the knee. It connects the thigh bone to the smaller bone in the lower leg and helps keep the knee stable, especially during side-to-side movements.

An LCL injury happens when this ligament is stretched too far or torn. This may be called:

• LCL sprain
• LCL tear
• lateral collateral ligament injury
• outer knee ligament injury

LCL injuries are usually graded by severity:

• Grade 1 – mild stretch or minor sprain
• Grade 2 – partial tear
• Grade 3 – complete tear

Some mild injuries improve with rest and physiotherapy, while more severe tears may need bracing, longer rehabilitation, or specialist review.

Causes

An LCL injury usually happens when force pushes the knee outward and overstretches the ligament.

Common causes include:

• direct blow to the inside of the knee
• sports collisions
• twisting injuries
• awkward landing
• sudden change of direction
• knee hyperextension
• falls
• running or contact sports injuries

It is commonly seen in sports such as:

• football
• rugby
• basketball
• skiing
• martial arts

Some LCL injuries happen on their own, while others happen together with damage to other knee ligaments or structures.

Symptoms

The most common symptom is pain on the outer side of the knee.

Other symptoms may include:

• swelling
• tenderness along the outer knee
• stiffness
• difficulty walking
• limping
• balance problems
• muscle spasms
• reduced range of movement
• knee weakness
• feeling of instability
• a snap, pop, or tearing feeling at the time of injury

Severe injuries may make the knee feel unstable or unable to support normal movement.

What Should I Do?

If you suspect an LCL tear or outer knee ligament injury, early management is important.

For the first 24 to 48 hours, use the RICE approach:

• Rest – reduce walking and avoid sport
• Ice – apply for 15–20 minutes every 1–2 hours with a towel barrier
• Compression – use a supportive bandage if advised
• Elevation – raise the leg above heart level where possible

You should also:

• avoid twisting or pivoting on the knee
• use crutches if weight-bearing is painful
• book a physiotherapy assessment as soon as possible
• get medical review if the knee feels very unstable or swollen

A physiotherapist can assess the ligament, check for damage to other structures, and advise whether imaging or orthopaedic referral is needed.

Physiotherapy Treatment

Physiotherapy is a key part of treatment for LCL injuries and helps guide safe recovery.

Your physiotherapy plan may include:

Assessment and diagnosis

Your physiotherapist will assess:

• pain location
• swelling
• ligament stability
• knee movement
• walking pattern
• strength and balance

If needed, you may be referred for imaging such as:

• MRI
• X-ray
• ultrasound

Early treatment

In the early stage, treatment may include:

• pain and swelling management
• gentle mobility work
• protected weight-bearing advice
• bracing or support guidance if needed
• taping or strapping
• massage or soft tissue treatment where appropriate

Rehabilitation phase

As the knee improves, rehab usually includes:

• range of motion exercises
• quadriceps strengthening
• hamstring strengthening
• hip and glute strengthening
• balance training
• proprioception exercises
• gait re-education
• progressive return-to-sport rehab

Other treatment options

Depending on your case, physiotherapy may also include:

• hydrotherapy
• electrotherapy
• sports rehabilitation
• activity modification advice

The aim is to reduce pain, restore knee stability, and help you return safely to normal activity.

What Shouldn’t I Do?

If you have an LCL injury, avoid:

• continuing sport through pain
• twisting on the injured knee
• heavy exercise too early
• hot showers or heat packs in the first 48 hours
• alcohol in the early stage
• massage too early after injury if swelling is significant
• ignoring instability or severe swelling

These can increase bleeding, swelling, or delay recovery.

Long-Term Effects or Recovery

Most mild to moderate LCL injuries improve within a few weeks with the right treatment.

Recovery time depends on:

• the grade of the tear
• whether other knee ligaments are injured
• how early treatment begins
• how consistent you are with physiotherapy

If not treated properly, an LCL injury can lead to:

• ongoing knee instability
• repeated ligament injuries
• weakness
• reduced sports performance
• longer-term knee problems

Early physiotherapy helps reduce these risks and improve long-term recovery.

Why Choose ACE Physio Sports

At ACE Physio Sports, we provide evidence-based treatment for:

• LCL tears
• knee ligament injuries
• outer knee pain
• sports knee injuries
• return-to-sport rehabilitation

Why patients choose us:

• personalised rehab plans
• clear diagnosis and recovery guidance
• sports injury rehabilitation expertise
• strength and stability-based treatment
• patient-friendly explanations
• progressive return-to-activity planning

If you are looking for LCL tear physiotherapy in Singapore, ACE Physio Sports on East Coast Road can help guide your recovery.

Book Appointment

If you have outer knee pain, think you may have an LCL tear, or need expert rehab for a knee ligament injury, book an assessment with ACE Physio Sports.

ACE Physio Sports Website: acephysiosport.com Phone: +65 81535374 Email: admin@acephysiosport.com

Book your physiotherapy appointment today.