MSC ORT FINAL EXAM QUESTIONS WITH CORRECT DETAILED ANSWERS

MSC ORT FINAL EXAM QUESTIONS WITH CORRECT DETAILED ANSWERS What are the 3 bones of the knee joint? - ANSWER femur, tibia, patella, Range of Motion aimed for in a total knee replacement? - ANSWER 125- 135 degrees of flexion abduction - ANSWER movement away from the midline what knee compartment is subjected to the more weight bearing? - ANSWER medial T/F: the mechanical axis of the femoral bone is represented by the line down the center of the IM canal - ANSWER false argument for using CR knee implant? - ANSWER saves the pcl know the 3 knee joints - ANSWER medial tibiofemoral, lateral tibiofemoral, patellafemoral most popular incision for knee replacement? - ANSWER parapatellar T/F: the 4in1 cutting block has pin holes so the block can be moved 2mm to avoid notching - ANSWER True what is the advantage of patient specific cutting blocks? - ANSWER faster operation, less instruments, more specific and precise name the risk factors of OA - ANSWER gender, weight, age, trauma T/F: the anatomical and mechanical axis are the same in the tibia - ANSWER true what is the ap sizing guide used for? - ANSWER size, set femoral rotation and can reference anterior and posterior the hamstrings are the knees flexors or extensors? - ANSWER flexors what ligaments does the cruciate retaining implants retain? - ANSWER pcl, mcl, lcl primary components for a tkr - ANSWER 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 - ANSWER false is bow legged varus or valgus? - ANSWER varus define the screw home mechanism - ANSWER knee rotation to lock knee knock knees varus or valgus? - ANSWER valgus T/F: for revision, modularity is essential - ANSWER true in regards to RA the rapidly forming cells that produce damaging enzymes are called what - ANSWER pannus 4 primary knee stabilizing ligaments - ANSWER acl, mcl, pcl, lcl T/F: the knee is a simple hinge joint - ANSWER false what ligament is always sacrificed in a tkr? - ANSWER acl during a tka the resection of the distal femoral knee is aligned by referencing what axis? - ANSWER mechanical axis what is the extramedullary tibial cutting guide used for? - ANSWER 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? - ANSWER resects the femur what is the most common method for fixating the femoral implant in a tka? - ANSWER cement what is the most common method for fixating the tibia implant in a TKA? - ANSWER cement T/F: the anato and fitmore stems are two examples of chili pepper stems - ANSWER true T/F: surgeons pronounce abduction as AB-duction - ANSWER true most popular press fit stem design? - ANSWER tapered wedge what is the center pivot point in the hip? - ANSWER center of the femoral head surgeons commonly use ___________ width to determine where to cut femoral neck - ANSWER 1 finger when placing the acetabular shell in the pelvis what are the degrees of abduction and anteversion a surgeon should aim for? - ANSWER abduction: 40-45 anteversion: 20-25 know the ligaments of the hip capsule - ANSWER iliofemoral, ischiofemoral, pubofemoral