TKA Design Flashcards
0
Q
Previous patellectomy and inflammatory arthritis are indications for what TKA design?
A
Cruciate substituting
1
Q
Indications for cruciate retaining TKA?
A
Intact PCL
Valgus < 15 degrees
Varus < 10 degrees
2
Q
Give 3 indications for constrained TKA?
A
1) Neuropathic arthropathy (minimal bone loss- non hinged; massive bone loss- hinged)
2) Attenuation of MCL and or LCL (non hinged)
3) global ligament deficiency (hinged)
4) Tumor (hinged)
5) Post polio (hinged)
3
Q
What is the theoretical advantage of a mobile bearing TKA?
A
Reduces polyethylene wear by increasing contact area
4
Q
What is a complication of increased constraint implants?
A
Aseptic loosening
