Knee Arthroplasty
A 68-year-old man is undergoing primary total knee arthroplasty for osteoarthritis with varus deformity. The surgeon is planning component positioning using navigation. Pre-operative long-leg radiographs show a mechanical axis of 8 degrees varus. The surgeon discusses alignment philosophy with the registrar, including mechanical alignment, kinematic alignment, and the role of modern technologies. Regarding alignment in total knee arthroplasty:
Mark each as TRUE or FALSE
The mechanical axis of the lower limb runs from the centre of the femoral head to the centre of the ...
The femoral anatomic axis runs through the intramedullary canal; the distal femoral cut is made at 5...
Mechanical axis alignment creates a natural knee; kinematic alignment always causes early failure; t...
Kinematic alignment aims to restore the patient's native joint line and limb alignment rather than f...
Component rotation affects patellar tracking and flexion gap balance; femoral component rotation is ...
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Click T (True) or F (False) for each option