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18 Cards in this Set

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  • Back
What is the most likely cause of a cold, pulseless foot immediately after surgery?
Embolized atherosclerotic plaque
What is the best outcome measure after a total knee arthroplasty?
Pain relief
What is the treatment for postoperative slough of soft tissue over patellar tendon?
Medial gastrocnemius flap
What is the treatment for slough of soft tissue over patella itself?
Debridement and skin graft
What are the four reported risk factors for infection after total knee arthroplasty?
Rheumatoid arthritis
Male
Compromised skin
Elevated international normalized ratio (INR)
What effect do drains have on risk of infection?
Drains increase risk of infection
What is the problem with using polymerase chain reaction (PCR) to detect infection?
High rate of false-positives
What is the principal determinant of postoperative stiffness?
Preoperative stiffness
Postoperative knee flexion due to hamstring over pull can last how long?
4 to 6 weeks
Where are adhesion most commonly found?
Within the gutters
Increased risk of heterotopic ossification after TKA has been associated with what patient characteristic?
Increased weight
What laboratory marker is associated with increased risk or HO after TKA?
Postoperative C-reactive protein (CRP) values
What two TKA complications have been associated with rheumatoid arthritis?
Infection
Stiffness
What two complications have been associated with hemophilia?
Infection
Stiffness
What are the five reported risk factors for periprosthetic fracture after TKA?
Osteoporosis
Stress shielding
Femoral notching
Osteonecrosis
Wear-related osteolysis
How are distal femoral periprosthetic fractures classified?
Lewis and Rorabeck system
I: nondisplaced, intact prosthesis
II: displaced, intact prosthesis
III: displaced, loose prosthesis
How are proximal tibial periprosthetic fractures classified and subclassified?
Felix, Stuart, and Hanssen system
I: tibial plateau
II: adjacent to stem
III: distal to prosthesis
IV: tibial tubercle
Sub classification A to C describes relative stability of prosthesis
When planning revision surgery for periprosthetic fracture, what are the three key considerations?
Fracture displacement
Stability of the prosthesis
Bone quality