Introduction The topic TKA - Other complications has been broken into separate topics. Click the arrows below to review those topics. neurovascular vascular injury and bleeding peroneal nerve injury extensor mechanism patellar prosthesis loosening patellar clunk patellar maltracking extensor mechanism rupture other periprosthetic infection periprosthetic fracture metal hypersensitivity wound complications instability (tibio-femoral) stiffness