MCL Injury: Symptoms, Treatment and Rehabilitation

What is an MCL injury?

The MCL, or medial collateral ligament, is one of the main stabilising ligaments on the inner side of the knee. It helps support the knee against sideways stress and provides stability during walking, running, twisting and sport.

An MCL injury usually occurs when the knee is forced inward or placed under excessive load. This may happen during a contact injury, awkward landing, sudden change of direction, or twisting movement.

Common symptoms

An MCL injury may cause:

• Pain on the inner side of the knee

• Tenderness along the inside of the knee

• Swelling or bruising

• Difficulty walking

• Pain with twisting or changing direction

• A feeling of instability

• Stiffness or reduced knee movement

• Pain when bending or straightening the knee

• Difficulty returning to sport or exercise

MCL injuries can range from mild sprains to more significant ligament tears. They can also occur alongside other knee injuries, including ACL injuries, meniscus injuries or cartilage damage.

How is an MCL injury diagnosed?

A physiotherapist will assess your knee movement, swelling, tenderness, strength, walking pattern and knee stability.

They may also perform specific ligament tests to assess the MCL and determine the likely severity of the injury.

In some cases, medical imaging such as an MRI may be required, particularly if there is significant swelling, instability, difficulty weight-bearing, or concern for other knee injuries.

Treatment options

Many MCL injuries can be managed without surgery, especially when they are isolated injuries. Treatment usually focuses on protecting the ligament while it heals, restoring knee movement, rebuilding strength and gradually returning to activity.

More severe MCL injuries, or injuries involving other structures in the knee, may require review by a GP, sports physician or orthopaedic specialist.

Physiotherapy plays an important role in guiding recovery and helping you return safely to walking, running, gym training, work or sport.

How physiotherapy can help

Physiotherapy helps guide each stage of MCL recovery. Treatment may include:

• Pain and swelling management

• Advice on activity modification

• Bracing or support guidance, if required

• Restoring knee movement

• Improving walking and stair function

• Strengthening the quadriceps, hamstrings, glutes and calf muscles

• Balance and stability training

• Running preparation

• Sport-specific rehabilitation

• Education and exercise programming

The aim is to restore knee stability, strength, control and confidence.

When to see a physiotherapist

You should consider seeing a physiotherapist if you have:

• Pain on the inside of the knee

• Injured your knee during sport or exercise

• Had a contact injury to the outside of the knee

• Pain with twisting, pivoting or changing direction

• Swelling or bruising around the knee

• A feeling of instability

• Difficulty walking, running or using stairs

• Trouble returning to gym, work or sport

Guided MCL rehabilitation

Recovering from an MCL injury can be frustrating, especially when pain settles but the knee still feels weak, stiff or unstable with activity.

At Urban Physiotherapy, we provide structured MCL rehabilitation to help guide this process. Your rehabilitation plan may include early injury management, bracing advice where required, strength training, balance and control exercises, running progressions and return-to-activity planning, depending on your stage of recovery.

The goal is to give you a clear pathway forward, with each stage guided by your symptoms, knee stability, movement quality, strength and individual goals.

Book an appointment

If you have injured your MCL or are experiencing inner knee pain, our physiotherapists can help guide your rehabilitation and return to activity.

Book an appointment with Urban Physiotherapy today!