Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
12 Cards in this Set
- Front
- Back
|
What is the femoral component made of? |
cobalt-chrome with titanium stem |
|
|
What is the tibial tray/component made of? |
Titanium (doesn't articulate w femoral component, but holds the tibial insert) |
|
|
What is the tibial insert made of? thickness? |
ultra high molecular weight PE at least 8 mm thick |
|
|
What is the cement made of? |
methylmethacrylate |
|
|
4 points of Osteoarthritis |
1. Joint Space narrowing 2. Sclerosis 3. Subchondral cysts 4. Osteophyte formation |
|
|
4 points of Rheumatoid Arthritis |
1. Joint space narrowing 2. Periarticular osteoporosis 3. Joint erosions 4. Ankylosis |
|
|
Steps of TKA |
1. BONE CUTS - Cut femur and tibia perpendicular to mechanical axis using either intramedullary or extramedullary guides
2. IMPLANTS - trial implants are snerted to test adequacy of bone cuts
3. BALANCING - Sagittal plane + Coronal plane
4. FINAL IMPLANTATION |
|
|
What are you balancing in the sagittal plane? |
Flexion and extension gaps must be equal |
|
|
What are you balancing in the coronal plane? |
Balancing varus vs valgus deformities by releasing the concave side -->
Varus deformity - release medial side (medial side is too tight)
Valgus deformity - release lateral side (lateral side is too tight) |
|
|
What is the most common complication? |
Patellofemoral complications = patella maltracking, patellofemoral pain, and patellar fracture |
|
|
What are 2 neurovascular items to watch out for? |
Peroneal nerve - esp after mechanical correction of a valgus knee (nerve is stretched)
Superolateral geniculate artery |
|
|
2 medical complications always to look out for + it's prevention? |
DVT and PE; Prophylaxis = prevention = aspirin, warfarin, heparin |
