Knee Locking, Catching or Giving Way: What Could It Mean?

These symptoms are sometimes described as “mechanical symptoms” because they affect the way the knee moves. Although they can be associated with a meniscus injury, several different knee conditions can produce similar sensations. An assessment is therefore important before deciding on treatment.

What Does Knee Locking Feel Like?

Patients use the word “locking” to describe several different experiences.

The knee may briefly catch during movement, feel as though something is obstructing it or become difficult to straighten fully. Other people experience clicking or a momentary hesitation before the joint moves normally again.

A knee that remains stuck and cannot move through its usual range should be assessed promptly, particularly when the symptom follows an injury.

Could It Be a Meniscus Tear?

The menisci are cartilage structures that help cushion and stabilise the knee. An acute meniscus tear can happen during a twisting, pivoting or cutting movement. Degenerative tears may occur more gradually as the tissue becomes less resilient.

Common symptoms of a meniscus tear include:

• Pain around the knee joint
• Swelling and stiffness
• Catching or locking
• A sensation that the knee is giving way
• Difficulty fully bending or straightening the knee

However, having one or more of these symptoms does not confirm that a meniscus tear is present. Ligament injuries and other knee problems can also cause instability, swelling or abnormal movement.

Why Does a Knee Give Way?

The sensation of giving way may occur when pain causes a person to protect the knee, or when one of the structures responsible for stability is injured.

Ligament injuries, including injuries involving the anterior cruciate ligament, can cause instability. Meniscus damage may also make the knee feel unreliable, particularly during twisting movements or changes in direction.

How Is the Problem Diagnosed?

A knee specialist will ask how the symptoms began, whether an injury occurred and which movements trigger the problem. The knee is then examined for swelling, tenderness, movement and stability.

An X-ray may be used to look for arthritis, fractures or other bone-related causes. An MRI can provide more information about the meniscus, cartilage, ligaments and other soft tissues when clinically appropriate.

Will a Meniscus Tear Require Surgery?

Not every meniscus tear requires an operation. Treatment depends on factors such as the patient’s symptoms, activity level, age and the type, size and location of the injury.

Initial management may include modifying activities and following an appropriate rehabilitation programme. Arthroscopic treatment may be considered when symptoms continue despite non-surgical care or when significant catching and locking interfere with normal movement.

When Should You See a Knee Specialist?

Consider seeking an assessment when:

• The knee repeatedly catches or locks
• You cannot fully straighten the knee
• The knee frequently gives way
• Swelling keeps returning
• Symptoms followed a twisting or sporting injury
• Pain is interfering with work, walking or exercise

Dr Rael Salkinder provides specialist assessment and treatment for knee conditions, including meniscus injuries, ligament injuries and degenerative joint problems in Cape Town.

How we can help you:

Knee Meniscus Tear Surgery
Ligament/ACL Surgery
Knee Pain
Sports Injuries
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