tendon rupture tendon rupture tendon rupture is a condition in which a tendon separates in whole or in part from tissue to which it is attached, or is itself torn or otherwise divided in whole or in part. tendon rupture examples include: achilles tendon rupture biceps tendon rupture anterior cruciate ligament injury biceps femoris tendon rupture and quadriceps tendon rupture cruciate ligament#rupture patellar tendon rupture