MSC ORT Final Exam (Knee Hip Trauma) - Questions and Answers What are the 3 bones of the knee joint? femur, tibia, patella Range of Motion aimed for in
... [Show More] a total knee replacement? 125-135 degrees of flexion Abduction movement away from the midline What knee compartment is subjected to the more weight bearing? Medial T/F: the mechanical axis of the femoral bone is represented by the line down the center of the IM canal False Argument for using CR knee implant? saves the pcl Know the 3 knee joints medial tibiofemoral, lateral tibiofemoral, patellafemoral Most popular incision for knee replacement? Parapatellar T/F: the 4in1 cutting block has pin holes so the block can be moved 2mm to avoid notching True What is the advantage of patient specific cutting blocks? faster operation, less instruments, more specific and precise Name the risk factors of OA gender, weight, age, trauma T/F: the anatomical and mechanical axis are the same in the tibia True What is the ap sizing guide used for? size, set femoral rotation and can reference anterior and posterior The hamstrings are the knees flexors or extensors? Flexors What ligaments does the cruciate retaining implants retain? pcl, mcl, lcl Primary components for a tkr patella, femoral implant, tibia tray, tibia insert T/F: an argument in support of the PS knee is that you are able to keep the pcl False Is bow legged varus or valgus? Varus Define the screw home mechanism knee rotation to lock knee Knock knees varus or valgus? Valgus T/F: for revision, modularity is essential True In regards to RA the rapidly forming cells that produce damaging enzymes are called what Pannus 4 primary knee stabilizing ligaments acl, mcl, pcl, lcl T/F: the knee is a simple hinge joint False What ligament is always sacrificed in a tkr? Acl During a tka the resection of the distal femoral knee is aligned by referencing what axis? mechanical axis What is the extramedullary tibial cutting guide used for? tibial resection, adjust for posterior slope, stylus can cut 2 or 10mm, adjust for varus and valgus The femoral IM assembly is used to do what? resects the femur What is the most common method for fixating the femoral implant in a tka? Cement What is the most common method for fixating the tibia implant in a TKA? Cement [Show Less]