Partial Delaminated Quadriceps Tendon Rupture

Case We present a case of a 41-year-old male bodybuilder with a partial delaminated quadriceps tendon rupture after a traumatic injury. Partial quadriceps tendon tears are rare overall and usually are treated nonoperatively with conservative management depending on the patient's limitations. He was found to have an intact superficial quadriceps tendon with a partial thickness tear of the vastus intermedius and delamination of the undersurface quadriceps tendon precluding active knee extension. Conclusion To our knowledge, there has never been a reported partial quadriceps tendon tear with delamination of the undersurface, causing a complete extensor mechanism failure necessitating operative repair.