Advanced Adductor Longus Quiz

Q1. Why does an obturator nerve lesion commonly weaken adductor longus?

• Its motor fibers arise from the common fibular nerve
• It is supplied exclusively by the femoral nerve
• Its motor supply is usually derived from the obturator nerve
• It is supplied by the tibial nerve

Q2. Why is adductor longus a useful landmark when exposing the femoral triangle?

• It forms the roof of the popliteal fossa
• It forms the lateral boundary of the triangle
• Its medial border forms the medial boundary of the femoral triangle
• Its tendon forms the inguinal ligament

Q3. How can a proximal adductor longus strain produce groin pain?

• Its proximal attachment is near the pubis in the groin region
• It inserts into the patella
• Its origin is at the fibular head
• Its tendon passes behind the lateral malleolus

Q4. Why can resisted hip adduction reproduce symptoms in an adductor longus injury?

• The maneuver loads the injured adductor muscle-tendon unit
• It unloads all medial thigh muscles
• It primarily activates ankle plantarflexors
• It isolates the quadriceps tendon

Q5. Which relationship helps identify the anterior division of the obturator nerve during medial thigh dissection?

• It courses between biceps femoris and semitendinosus
• It passes behind the lateral malleolus
• It courses between adductor longus and adductor brevis
• It runs within vastus lateralis

Q6. Why can adductor longus assist hip flexion more effectively from some hip positions than others?

• It crosses the knee and ankle
• Its nerve supply changes with hip angle
• Its line of pull changes relative to the hip joint axis
• Its femoral insertion migrates during movement

Q7. What is the importance of the femoral insertion of adductor longus for its joint actions?

• It directly flexes the knee through the pes anserinus
• It acts across the hip without directly crossing the knee
• It crosses the ankle to invert the foot
• It directly extends the knee through the patella

Q8. Why can adductor longus be distinguished from adductor magnus during dissection?

• Adductor longus inserts on the ischial tuberosity
• Adductor magnus lies entirely in the anterior leg
• Adductor longus is more superficial and has a more limited femoral insertion
• Adductor longus is larger and deeper than adductor magnus

Q9. Which finding is most consistent with isolated weakness of adductor longus and neighboring adductors?

• Loss of toe extension
• Loss of knee extension only
• Loss of ankle dorsiflexion
• Reduced strength of thigh adduction

Q10. Which statement best integrates adductor longus anatomy?

• It is a common-fibular-nerve-supplied leg muscle that everts the foot
• It is a tibial-nerve-supplied hamstring that inserts on the fibular head
• It is a femoral-nerve-supplied quadriceps muscle that extends the knee
• It is an obturator-nerve-supplied medial thigh muscle that inserts on the linea aspera and primarily adducts the hip