Adult Reconstruction Flashcards
Osteoprotegrin (OPG) binds to what structure to inhibit particle-induced osteolysis?
RANK ligand
Which type of inflammatory cell is involved in the biological response to metal-on-metal particulate debris?
Lymphocyte
What is the most accurate and precise technique to evaluate polyethylene wear?
Radiostereometric analysis
______ is a marker for bone turnover and is elevated in osteolysis.
N-telopeptide urine level
Vancouver classification for a periprosthetic femur fracture located in the trochanteric region?
Type A
Vancouver classification for a periprosthetic femur fracture located just distal to the femoral stem, and the stem is well fixed?
Type B1
Vancouver classification for a periprosthetic femur fracture located around or just distal to the femoral stem, the stem is loose, and there is good bone stock present in the proximal femur?
Type B2
Vancouver classification for a periprosthetic femur fracture located around or just distal to the femoral stem, the stem is loose, and there is poor bone stock present in the proximal femur?
Type B3
Vancouver classification for a periprosthetic femur fracture located well below the femoral stem?
Type C
There is a reduced risk of ______ with submuscular plating of periprosthetic supracondylar femur fractures compared to an extensive lateral approach.
nonunion
Performing an isolated release of the popliteus tendon during a total knee arthroplasty is most appropriate in which knee deformity?
Valgus knee that is tight in flexion
When balancing a TKA, if the gap problem is symmetric, should the tibia or femur be adjusted?
Tibia
When balancing a TKA, if the gap problem is asymmetric, should the tibia or femur be adjusted?
Femur
What effect does internal rotation of the tibial component have on the Q angle?
Increased q angle
Malrotation of total knee components leading to patellar tracking problems is best diagnosed by what radiographic modality?
CT scan of the knee
What preoperative knee deformity puts a patient at most risk for a postoperative peroneal nerve palsy after TKA?
Valgus and flexion contracture
What is the most common intraoperative complication in a patient with sickle cell disease undergoing a total hip arthroplasty?
perforation of the femoral canal
What is the most common cause of early revision surgery (
periprosthetic fracture (femoral neck fracture)
What is the optimal position of the hip during arthrodesis?
0-5 degrees of adduction, 0-5 degrees of external rotation, and 20-35 degrees of hip flexion.
Which radiographic view is most sensitive for detecting knee joint degenerative changes?
45 degree PA flexion weightbearing view
What percentage of patients with complete peroneal nerve palsy after total hip arthroplasty will never recover full strength?
60-65%
What is the most common complication after revision of a total hip polyethylene liner in a patient with well-fixed femoral and acetabular shell components?
dislocation
