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Knee

Quadriceps Tendon Rupture

A quadriceps tendon rupture is a tear of the tendon above the kneecap that helps straighten the knee. Complete tears often cause major weakness and difficulty walking.

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Typical Recovery Time
Recovery often takes 4 to 6 months after complete rupture.

Symptoms

  • Sudden pain
  • Weakness
  • Swelling
  • Inability to straighten knee
  • Difficulty walking

Common Causes

  • Fall
  • Forceful contraction
  • Sports injury
  • Degenerative tendon
  • Chronic disease

Treatment Options

1Immobilization
2Surgical repair
3Physical therapy
4Pain control
5Gradual strengthening

When to See a Doctor

Seek urgent care if you cannot straighten the knee after injury.

Frequently Asked Questions

What is a quadriceps tendon rupture?
A quadriceps tendon rupture is a tear of the tendon that connects the quadriceps muscle to the kneecap. This tendon is essential for straightening the knee. A complete tear can make it difficult to walk or lift the leg.
What causes a quadriceps tendon rupture?
It often occurs from a sudden forceful contraction of the quadriceps, such as during a fall or jump. It may also occur in tendons weakened by degeneration or medical conditions. Sports and sudden movements can increase risk.
What are the symptoms?
Symptoms include sudden pain, swelling, and inability to straighten the knee. Some people feel a pop at the time of injury. A gap above the kneecap may be noticeable.
Do I need surgery for a quadriceps tendon rupture?
Complete ruptures usually require surgery to restore knee function. Partial tears may sometimes be treated without surgery. Early evaluation is important for the best outcome.
How long does recovery take?
Recovery typically takes several months. Return to sports often takes 6 to 12 months depending on healing and rehab. A structured strengthening program is essential.

Find a Sports Medicine Provider

Connect with a doctor, physical therapist, or imaging center near you.

Find a Provider for Quadriceps Tendon Rupture