Oliver Bee RMTRegistered Massage Therapist

Massage therapy · Kitchener–WaterlooQuadriceps Tendon Tear

Hip & Thigh

What It Is

The quadriceps is the main muscle group at the front of the thigh. The four quadriceps muscles join into the quadriceps tendon, which attaches them to the top of the kneecap (AAOS, n.d.). A quadriceps tendon tear happens in this tendon, just above the kneecap.

Even though anyone can injure the tendon, quadriceps tendon tears are not common, and they occur most often in middle-aged people who play running or jumping sports (AAOS, n.d.). Small tears cause pain and can make it difficult to walk and do everyday activities. A complete tear of the tendon is a disabling injury that almost always needs surgery, followed by physical therapy, to regain full knee movement and function (AAOS, n.d.).

Many tears do not completely disrupt the tendon. This is similar to a rope being stretched so far that some of the fibres are frayed, but the rope is still in one piece. In a complete tear, the tendon splits into two separate pieces, or it comes away completely from the bone (AAOS, n.d.).

Recovery from a tendon tear can take a long time. After surgery for a complete tear, complete recovery takes at least 4 months, and many people need 12 months before they reach all their goals (AAOS, n.d.).

A quadriceps tendon tear often happens when there is a heavy load on the leg with the foot planted and the knee partly bent, such as an awkward landing from a jump in basketball or football (AAOS, n.d.). The quadriceps help you kick, run and jump, and they are prone to injury (Cleveland Clinic, 2025). Some therapists blame an imbalance of the quadriceps and hamstrings (on the back of the thigh). Some experts blame a shortening of the quadriceps, placing more stress on the tendon attachments. Either way, if the force going through the tendon is more than it can withstand, there is a risk of a tear.

Tears can be partial or complete. Most small, partial tears respond well to non-surgical treatment, but most people with complete tears need surgery to repair the tendon (AAOS, n.d.).

Warning Signs of a Complete Tear

When the quadriceps tendon tears, there is often a tearing or popping feeling, followed by pain and swelling. Other signs include (AAOS, n.d.):

  • not being able to straighten your knee
  • an indentation or gap at the top of your kneecap where the tendon tore
  • a kneecap that sags or droops
  • difficulty walking because the knee buckles or gives way

If you have these signs after an injury, call 911 or go to the emergency room at your nearest hospital. People who need surgery do better if the repair is done soon after the injury (AAOS, n.d.).

Quadriceps Tendon Tear Anatomy

The leg is the lower limb of the body. It supports the body when standing, and allows you to run, walk, jump and perform various other movements.

The upper part of the leg (the thigh) begins at the hip and goes down to the knee. The main bone in this region is the femur (thigh bone), which is the largest bone in the body. The head of the femur forms the ball of the ball-and-socket hip joint, and the lower end of the femur forms the upper part of the knee joint. The quadriceps muscles lie at the front of the thigh. The four quadriceps muscles meet just above the patella (kneecap) to form the quadriceps tendon, which attaches the quadriceps to the patella. Working together, the quadriceps muscles, quadriceps tendon and patellar tendon act like a pulley to straighten the knee (AAOS, n.d.).

A quadriceps tendon tear is not to be confused with a patellar tendon tear. The patellar tendon attaches the bottom of the kneecap to the shin bone (tibia), while the quadriceps tendon attaches above the kneecap (AAOS, n.d.).

Not a diagnosis — for more information, contact me or another trusted healthcare provider.

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