When is tendon repair surgery recommended for quadriceps tendon rupture?

The quadriceps tendon connects the thigh muscles to the kneecap and helps the knee extend. A complete tear can interrupt this mechanism. The orthopaedic assessment considers the gap between tendon ends, knee stability, skin and soft-tissue condition, general health, and the timing of the injury. A partial tear may sometimes be managed with a brace and rehabilitation when knee extension remains useful, but a large partial tear with weakness may still need repair.

During repair, the surgeon brings the torn tendon back to its attachment at the kneecap using sutures or fixation devices. Rehabilitation then protects the repair while gradually restoring movement and strength.

Arrange prompt orthopaedic review after a suspected rupture. Keep the knee supported in the position advised, avoid weight-bearing or active knee extension unless instructed, and use crutches if provided. The clinician may examine the straight-leg raise and request imaging to clarify the tear. Bring a list of medicines and describe when the injury occurred, whether the knee gave way, and how much movement is possible.

Read about the procedure in [Tendon Repair Surgery](/treatments/reconstructive-orthopedic-surgery/tendon-repair-surgery/).

Seek urgent assessment for a new inability to straighten the knee, a rapidly enlarging swelling, severe pain after an injury, numbness, a cold or unusually pale foot, or an open wound. These signs need timely examination because the tendon and nearby structures may require protection while a treatment decision is made.

Ask whether the tear is complete or partial, what the examination and imaging show, whether non-surgical care is reasonable, how the repair will be protected, when movement and weight-bearing can progress, and which warning signs should prompt review.