arthroplasty Flashcards
define uncemented fixation
the implant surfaces are roughened to allow bony overgrowth
list the 3 posterior approach knee precautions
no flexion past 90
no med rotation
no adduction past midline
differences between cemented and uncemented
cemented: FWB- WBAT , more common approach
uncemented: WBAT or FeWB if result was not reached
when do you need a hip or knee replacement
when cartilage between the bones in their joint has worn away causes pain and stiffness in the joint
what is a partial knee replacement (unicondylar)
only diseased/damaged part is removed
what is TKA
total knee arthroplasty- entire knee joint is removed (femur,patella,fibula)
3 types of hip replacement
THA= Entire joint is removed and replaced
Hip resurfacing =Only the damaged areas are removed Hip revision Previously replaced parts are damaged and need to be replace
4 types of surgical approaches for hip fractures:
Cannulated screws- younger patients, non-displaced fracture
Hemiarthroplasty- full hip precautions, displaced intracapsular
Intramedullary- displaced intracapsular
Complex fracture- guild wires and plates usually NWB, hip precautions
4 Types of hip fractures:
Subcapital Neck Fracture- Where the head and neck of femur meet
Transcervical Neck Fracture- Fracture to the neck of the femur
Intertrochanteric- Between the neck and lesser trochanter
Subtrochanteric- From bottom of lesser trochanter and below
What muscles are cut through during a anterior hip replacement?
Sartorius and rectus femoris
What bones are cut through during a posterior hip replacement?
PSIS, Greater trochanter, and the femoral shaft
What is a pro and con for the posterior hip replacement approach?
Less chance of limping but high risk for dislocations
in a hip resurfaces which parts are removed and what is preserved
Acetabulum and head are removed
neck is preserved
knee precautions:
no twisting, pivoting, kneeling
What are main reasons a surgery is delayed?
Pt is young, unmotivated, obese, infections or co-morbidities
