Advanced Femoral Neck Quiz

Q1. Why can a displaced intracapsular femoral neck fracture cause avascular necrosis of the femoral head?

• It always transects the femoral artery in the thigh
• It interrupts the popliteal artery
• It can disrupt the retinacular blood supply to the femoral head
• It removes the acetabular labrum

Q2. Why is nonunion a recognized complication of femoral neck fractures?

• The area has no mechanical loading
• The femoral neck contains no bone cells
• The fracture is always outside the hip capsule
• Intracapsular anatomy, vascular compromise, and shear can impair healing

Q3. How can coxa vara alter hip abductor mechanics?

• It eliminates all forces on the femoral neck
• It changes abductor leverage and femoral neck loading
• It moves the greater trochanter to the distal femur
• It converts the abductors into knee extensors

Q4. How can coxa valga affect hip biomechanics?

• It always increases the abductor moment arm
• It prevents weight transmission through the femoral head
• It fuses the hip joint
• It can reduce the hip abductor moment arm

Q5. Why is the posterosuperior femoral neck particularly important in vascular anatomy?

• Major retinacular vessels course along this region
• It contains the patellar ligament
• The popliteal artery crosses this region
• The dorsalis pedis artery enters the femoral head here

Q6. How does femoral anteversion influence lower limb rotational alignment?

• It determines only ankle plantarflexion
• It has no relationship to femoral rotation
• It influences femoral and hip rotational alignment
• It fixes the knee permanently in extension

Q7. Why is precise reduction important in a displaced femoral neck fracture in a patient undergoing head-preserving fixation?

• It is required only for cosmetic symmetry
• It eliminates the need for blood supply
• Alignment has no effect on healing
• It supports mechanical stability and preservation of femoral head viability

Q8. Why can a subcapital femoral neck fracture be particularly hazardous to femoral head perfusion?

• It lies outside the proximal femur
• It cannot affect intracapsular vessels
• It occurs near the terminal retinacular vascular supply to the head
• It always injures the popliteal artery

Q9. How does the femoral neck help distribute forces between the femoral head and shaft?

• It carries only rotational force
• It transmits load directly to the fibula
• It prevents force transmission to the shaft
• Its angled structure transfers load while resisting bending, compression, and tension

Q10. Which statement best integrates the anatomy of the femoral neck?

• It is a tibial process for patellar ligament attachment
• It is a distal femoral articular surface forming the knee
• It is a pelvic structure forming the acetabular rim
• It connects the head to the shaft region while integrating hip geometry, load transmission, capsular anatomy, and vulnerable femoral head blood supply