[Animal experiment studies of the resistance to wear of a teflon ligament prosthesis].
In a randomised study the anterior cruciate ligament (ACL) was resected in 16 sheep and replaced by a PTFE-Ligament prosthesis. The device was examined 1/2 year and 1 year after implantation. 1 year after implantation the signs of wear were considerably greater than 1/2 year after implantation and the tensile strength was significantly decreased. As a result of the implantation technique and by the large volume, the device underwent an unphysiologically high mechanical stress, leading to early breakage. The improved implantation technique should result in lower mechanical stress in the larger human knee joint and a longer lifetime should be expected.
D000818:Animals; D001696:Biomechanical Phenomena; D008023:Ligaments, Articular / Q000601:surgery*; D011138:Polytetrafluoroethylene; D019736:Prostheses and Implants; D011475:Prosthesis Failure; D012756:Sheep
D011138:Polytetrafluoroethylene
Tierexperimentelle Untersuchungen zur Frage der Verschleissfestigkeit einer Teflon-Ligament-Prothese.