Advanced Tibial Plateau Quiz

Q1. Why can a displaced tibial plateau fracture impair knee mechanics even after the bone unites?

• The fracture cannot affect cartilage
• Only the patella determines tibiofemoral congruity
• Residual articular incongruity can alter contact stress and load distribution
• The plateau does not bear joint load

Q2. Why are meniscal injuries commonly considered when evaluating tibial plateau fractures?

• The plateau has no soft tissue attachments
• The menisci are directly related to the fractured articular region and its attachment sites
• The menisci attach exclusively to the patella
• The menisci are located only at the ankle

Q3. How can an intercondylar eminence avulsion affect knee stability?

• It detaches the Achilles tendon
• It directly ruptures the deltoid ligament
• It affects only ankle inversion
• It can compromise cruciate ligament function through bony avulsion of an attachment

Q4. Why is depression of the lateral tibial plateau clinically important?

• It affects only the fibular shaft
• It increases acetabular depth
• It can alter lateral joint support, alignment, and load distribution
• It cannot influence knee stability

Q5. Which major neurovascular structures are at risk posterior to the proximal tibia in severe plateau trauma?

• Popliteal vessels and tibial nerve
• Dorsalis pedis artery and deep fibular nerve
• Radial artery and median nerve
• Femoral vessels in the femoral triangle

Q6. Why can varus or valgus malalignment after a plateau fracture matter long term?

• It changes the mechanical axis and compartmental load distribution
• It changes only patellar color
• It affects only toe flexion
• It has no effect on knee contact forces

Q7. How can a posterolateral tibial plateau injury affect knee stability?

• It forms the attachment of the patellar ligament
• It has no relationship to the femoral condyle
• It stabilizes only the medial ankle
• Loss of posterolateral support can contribute to rotational and coronal instability

Q8. Why is restoration of plateau width important after some fractures?

• Widening always improves stability
• Excessive width can disturb alignment and soft tissue tension around the knee
• Only tibial length influences the knee
• Plateau width is unrelated to knee anatomy

Q9. Why is the subchondral bone of the tibial plateau important?

• It produces synovial fluid
• It replaces the menisci
• It forms the cruciate ligaments
• It supports articular cartilage and distributes compressive load

Q10. Which statement best integrates the anatomy of the tibial plateau?

• It is a distal tibial structure forming the medial ankle
• It is a fibular structure that forms the lateral malleolus
• It combines weight-bearing articular surfaces with meniscal and cruciate attachment regions that support knee stability
• It is a nonarticular shaft region with no ligament attachments