Pires et al reported a classification for interprosthetic femoral fractures. The authors are from Federal University of Minas Gerais in Brazil.
Patient selection: interprosthetic femoral fracture with stemmed femoral prosthesis and knee prosthesis
Categories:
(I) unstemmed knee prosthesis and fracture mid to upper femur ("surrounding hip")
(II) unstemmed knee prosthesis and fracture lower femur ("surrounding knee")
(III) stemmed knee prosthesis
Hip Prosthesis |
Knee Prosthesis |
Category I |
stable |
stable |
IA |
unstable |
stable |
IB |
stable |
unstable |
IC |
unstable |
unstable |
ID |
Hip Prosthesis |
Knee Prosthesis |
Category II |
stable |
stable |
IA |
unstable |
stable |
IB |
stable |
unstable |
IC |
unstable |
unstable |
ID |
Hip Prosthesis |
Knee Prosthesis |
Bone Between |
Category III |
stable |
stable |
viable |
IIIA |
stable |
stable |
nonviable |
IIIB |
stable or unstable |
unstable or stable |
viable |
IIIC |
stable or unstable |
unstable or stable |
nonviable |
IIID |
For IIIC and IIID, one or both of the prostheses is unstable
Specialty: Surgery, orthopedic, Emergency Medicine