Welcome to your Test 20 The femoral nerve arises from which roots? L1–L2 L2–L4 L3–L5 L4–S1 None Which nerve is the main sensory supply to the lateral thigh? Obturator nerve Femoral nerve Lateral femoral cutaneous nerve (LFCN) Sciatic nerve None Which block best provides analgesia for anterior knee surgery? Sciatic nerve block Adductor canal block Popliteal sciatic block Obturator block None Which structure lies immediately lateral to the femoral artery? Femoral vein Femoral nerve Lymphatics Sartorius muscle None The sciatic nerve is composed of which two nerves? Femoral and obturator Tibial and common peroneal Obturator and tibial Sural and tibial None Which nerve must be blocked for tourniquet pain during knee surgery? Obturator nerve Femoral nerve Sciatic nerve Lateral femoral cutaneous nerve None What is the safest landmark for LFCN block under ultrasound? ASIS (Anterior Superior Iliac Spine) Inguinal ligament midpoint Femoral crease Pubic tubercle None Which is NOT a content of the adductor canal? Femoral artery Saphenous nerve Femoral nerve Nerve to vastus medialis None Which nerve innervates the posterior thigh and lower leg? Femoral Obturator Sciatic Pudendal None A sciatic block at the gluteal level should be performed with the patient in: Supine Lateral Prone Sitting None What is the endpoint of a successful femoral nerve block? Paresthesia in lateral thigh Quadriceps twitch (patella snap) Foot dorsiflexion Tingling in perineum None What is a reliable sonographic landmark in a femoral nerve block? Sartorius muscle Inguinal ligament Femoral artery Tensor fasciae latae None What structure lies within the adductor canal? Femoral nerve proper Obturator nerve Saphenous nerve Sciatic nerve None What is the preferred approach for ankle surgery with sciatic block? Lateral sciatic block Popliteal approach Gluteal approach Anterior sciatic block None Which nerves should be blocked for complete ankle block? Femoral and sciatic Tibial, superficial peroneal, deep peroneal, sural, and saphenous Sciatic and obturator Tibial and deep peroneal None Which nerve innervates the medial aspect of the leg and ankle? Saphenous nerve Tibial nerve Deep peroneal nerve Superficial peroneal nerve None Which block is preferred for ACL repair under RA? Interscalene + sciatic Femoral + sciatic Femoral + LFCN Adductor canal + sciatic None Which nerve provides innervation to the hip joint capsule? Obturator nerve Femoral nerve Sciatic nerve All of the above None Which block is suitable for analgesia after hip fracture surgery? Adductor canal block Fascia iliaca block Popliteal sciatic block Ankle block None Which nerve lies deep to the psoas major muscle? Femoral nerve Genitofemoral nerve LFCN Obturator nerve None Which muscle is pierced by the obturator nerve? Pectineus Obturator externus Sartorius Iliacus None What block is commonly used in ER for hip fracture pain? Lumbar plexus block Fascia iliaca block Femoral nerve block Adductor canal block None What structure must be avoided during sciatic block at gluteal level? Femoral artery Pudendal nerve Inferior gluteal artery Lateral femoral cutaneous nerve None What is a sign of successful obturator nerve block? Thigh adduction weakness Quadriceps contraction Hip flexion Foot inversion None Which LA is best for motor-sparing knee block? Lidocaine Ropivacaine Bupivacaine Chloroprocaine None What is the preferred site for popliteal block under ultrasound? 2 cm above popliteal crease At tibial plateau level 5–10 cm above popliteal fossa crease Below gastrocnemius None Which nerve is least likely to be blocked with a standard fascia iliaca block? Femoral nerve Obturator nerve LFCN Genitofemoral nerve None Which block would you avoid in a patient with bilateral lower limb fractures and coagulopathy? Ankle block Adductor canal block Fascia iliaca block Lumbar plexus block None What is the most common complication of femoral nerve block? Infection Hematoma Motor weakness Nerve injury None Which block spares quadriceps strength the most? Femoral nerve block Adductor canal block Lumbar plexus block Obturator nerve block None What structure is targeted in a pericapsular nerve group (PENG) block? Femoral nerve Obturator nerve Articular branches of femoral and obturator nerves Sciatic nerve None Which nerve must be blocked for medial malleolus surgery? Tibial nerve Saphenous nerve Superficial peroneal nerve Deep peroneal nerve None What is the most important safety step during US-guided sciatic block? Using out-of-plane needle approach Ensuring high-pressure injection Real-time needle tip visualization Avoiding Doppler use None Which nerve lies closest to the sartorius muscle in the mid-thigh? Femoral Obturator Saphenous LFCN None Which nerve lies posterior to the medial malleolus? Deep peroneal Saphenous Tibial Sural None The deep peroneal nerve supplies sensation to Lateral foot Webspace between 1st and 2nd toes Plantar aspect of toes Heel None The sural nerve is a branch of: Tibial nerve only Common peroneal only Both tibial and common peroneal Sciatic nerve directly None Which nerve supplies dorsum of foot except first cleft? Tibial Deep peroneal Superficial peroneal Saphenous None Which nerve lies between the heads of gastrocnemius? Tibial nerve Common peroneal nerve Sural nerve Saphenous nerve None Which block covers the sole of the foot? Common peroneal Deep peroneal Tibial Sural None Which of the following blocks is least painful in awake patients? Sciatic (gluteal) Femoral nerve block Lumbar plexus block Obturator nerve block None In PENG block, which landmark lies deep to psoas tendon? Iliopubic eminence Sacroiliac joint Femoral artery Anterior superior iliac spine None Which nerve is tested by foot eversion? Tibial Deep peroneal Superficial peroneal Saphenous None What is the dose limit for ropivacaine in lower limb blocks (70 kg adult)? 100 mg 150 mg 200 mg 250 mg None What is a common side effect of ankle block? LA systemic toxicity Hematoma Foot drop Infection None Which block is preferred for postoperative pain after total hip replacement? Sciatic block Femoral nerve block Fascia iliaca block or PENG block Popliteal block None Which nerve lies closest to the ASIS? Femoral nerve LFCN Saphenous nerve Genitofemoral nerve None What is the first sign of sciatic nerve stimulation during block? Knee extension Plantarflexion or dorsiflexion Thigh adduction Hip flexion None What does the “double-contour sign” in US indicate? Tibial nerve Femoral artery bifurcation Sciatic nerve at popliteal level Obturator nerve branches None In a high femoral block, what complication is most likely? Epidural spread Quadriceps paralysis Femoral artery spasm Horner’s syndrome None Time's up
