Quadriceps Tendon Tear

Diagnosis

Diagnosing a quadriceps tendon tear typically begins with a detailed review of symptoms and a physical examination. A healthcare provider will ask about how the injury occurred, whether there was a sudden pain or popping sensation, and if there are difficulties extending the knee.

During the physical exam, the provider may:

• Check for swelling, bruising, or a visible indentation above the kneecap.

• Ask you to straighten your leg to evaluate the strength of the quadriceps muscle.

• Palpate the tendon to feel for gaps or defects in the tissue.

Imaging tests are often used to confirm the diagnosis and assess the severity of the tear:

• X-rays can show if the kneecap has been pulled out of its normal position, which may happen in complete tears.

• Ultrasound provides real-time images of the tendon and can identify partial or complete ruptures.

• MRI gives a detailed view of the tendon, surrounding muscles, and ligaments to determine the extent of the injury and any associated damage.

Treatment

Treatment for a quadriceps tendon tear depends on the severity of the injury — whether it is a partial or complete tear. The main goal is to restore knee function and strength.

• Nonsurgical treatment:

  • Recommended for partial tears when the tendon is not fully detached.

  • The knee may be immobilized in a brace or cast to keep it straight while the tendon heals.

  • Physical therapy begins after a few weeks to restore flexibility, strength, and range of motion.

• Surgical treatment:

  • Required for complete tears or severe partial tears that limit leg extension.

  • The surgeon reattaches the torn tendon to the kneecap using sutures or anchors.

  • Post-surgery, the knee is typically braced for several weeks followed by a structured physical therapy program.

• Rehabilitation:

  • Physical therapy focuses on gradual strengthening of the quadriceps muscle and improving knee stability.

  • Recovery can take several months, and most people regain full function with proper rehabilitation.

Prompt diagnosis and treatment are essential to prevent long-term weakness or loss of mobility. Early medical attention improves the likelihood of a successful recovery and return to normal activities.