Mako THA Exam Study Guide

Mako THA Exam Study Guide Functional hip positioning utilizes which feature(s) below: a. Pelvic tilt planning b. Virtual range of motion c. Both a and b answers are correct d. None of the answers are correct - c. Both a and b answers are correct A pelvis is considered stiff if the rollback is less than ___ degrees. a. 5 b. 10 c. 30 d. 40 - b. 10 T/F Sacral slope will always be an absolute value. - True Define pelvic tilt: - The angle between the anterior pelvic plane (APP) and the coronal plane in the sagittal view How is sacral slope measured? - Using the angle between the superior endplate of the S1 vertebrae and the horizontal plane. T/F It can be assumed that as the pelvis rotates in sitting and standing, the sacrum and pelvis move together. - True Define posterior pelvic tilt: - APP angled posteriorly relative to coronal plane Define anterior pelvic tilt: - APP angled anteriorly relative to coronal plane T/F Sacral slope angle can be positive or negative. - False - it will always be positive. Where can you choose to view the change in pelvic tilt values relative to the supine pose? - Surgeon preferences What mode is VROM used in? - Reduced mode in implant planning T/F When there is overlap, or intersection, between the bone models or implant systems, the application displays the impingement on the bone or implant in yellow. - False - red When _______ is pressed, the femur, stem and head models disappear to provide a better visualization of impingement. If ________ is pressed again, the femur, stem and head models will reappear. - ctrl + left-click Modifications that can cause impingement include: a. Changes in orientation, size, type of implants b. Switching between functional poses c. Updating ROM values for operative femoral model d. Zooming in to see implant-on-implant impingement e. All the above - e. All the above What are the VROM recommended angles for STAND position? - 10 degrees extension 30 degrees external rotation No abduction/adduction What are the VROM recommended angles for SIT position? - 90 degrees flexion 60 degrees internal rotation No abduction/adduction List the 3 types of impingement: - Implant on