1. Chautems R, Michel J, Barraud GE, Burdet A (2001) Bifocal avulsion of the patellar tendon in an adult: a case report. Rev Chir Orthop Reparatrice Appar Mot 87:388–391
2. Berg EE (1995) Bipolar infrapatellar tendon rupture. J Pediatr Orthop 15:302–303
3. Chappius J, Penders W, Cherchel A, Lamraski G (2011) Bifocal disruption of the knee extensor apparatus(floating patella) in a 72-year-old patient. Acta Orthop Belg 77:548–551
4. Frankl U, Wasilewski SA, Healy WL (1990) Avulsion fracture of the tibial tubercle with avulsion of the patella ligament. report of two cases. J Bone Joint Surg Am 72:1411–1413
5. Goodier D, Maffulli N, Good J (1994) Tibial tuberosity avulsion associated with patella tendon avulsion. Acta Orthop Belg 60:235–237