Hip Surgery Flashcards
0
Q
Define osteolysis
A
Demarcated non-linear lyric lesion >3mm in diameter.
1
Q
Reasons for hip revision
A
IF WOLIM
Infection Fracture Wear Osteolysis Loosening Instability Malalignment
2
Q
Issues of pagets in THr
A
Protrusio hard bone Bleeding Deformity proximal femoral diaphysis Coxa vara High output cardiac failure Decreased longevity due to loosening 10-15% at 10 years
3
Q
Requirements for acetabular stability
A
2/3 rim contact
>50% contact with host bone
>70% coverage
If not or pelvic discontinuity- need a CAGE
4
Q
Risks of intra operative # in acetabular THR
A
Revisions Osteopaenia Under reaming >2 mm Uncemented cup Excessive impact ion Pagets Elliptical monoblock cups
