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QUADRICEPS TENDON RUPTURE                                      KANDILNOTES


  • A quadriceps tendon rupture is an injury to the quadriceps tendon, leading to tearing of the tendon that connects your knee cap (patella) to the thighbone

  • The quadriceps tendon is a part of the extensor mechanism of the knee, allowing you to straighten your knee

  • There are two broad types of tears, partial thickness tears and full thickness (complete) tears

  • Usually occurs in males in their 40s or 50s

  • 8:1 ratio of males to females for quadriceps rupture


  • Quadriceps tendon ruptures usually are traumatic and occur due to tension overload of the tendon, with the knee usually bent and the foot on the floor

  • The injury often occurs when someone lands awkwardly from a jump or misses a step while walking

  • Risk factors include quadriceps tendinopathy, systemic issues like diabetes and rheumatoid arthritis, and previous steroid injection


  • Quadriceps tendon ruptures are associated with immediate pain and swelling

  • Patients oftentimes hear or feel a “pop” in their knee

  • Inability to straighten the knee


  • Partial thickness quadriceps tendon tears that don't affect your ability to straighten the knee can often be managed without surgery

  • Non-surgical management consists of either cast or knee brace locked in extension with protected weight bearing. This is followed by progressive bending of the knee under physical therapy guidance

  • Full thickness (complete) quadriceps tears cause disruption of the extensor mechanism and prevent straightening of the knee. These tears therefore usually require surgery

  • Surgery consists of repair of the tendon back to the kneecap usually with sutures or suture anchors

  • In chronic cases, tissue graft may be used to augment the repair

quadriceps tendon rupture capture 1.PNG
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