Advanced Inferior Gluteal Nerve Quiz

Q1. Why can an inferior gluteal nerve lesion make rising from a low chair difficult?

• The nerve supplies quadriceps for knee extension
• The task demands powerful gluteus maximus extension from a flexed hip
• The nerve supplies the hamstrings exclusively
• The task requires only ankle dorsiflexion

Q2. Which anatomical feature helps distinguish inferior gluteal nerve injury from superior gluteal nerve injury?

• Both nerves supply exactly the same muscles
• Neither nerve supplies gluteal muscles
• Both are purely sensory
• The two nerves supply different gluteal muscle groups

Q3. Why can the inferior gluteal nerve be injured by a poorly placed injection in the gluteal region?

• The nerve runs only in subcutaneous tissue over the knee
• The nerve lies only in the medial leg
• The nerve lies deep to gluteus maximus in the gluteal region
• The nerve is protected inside the femur

Q4. Why does level walking often show less obvious weakness than stair climbing after isolated inferior gluteal nerve injury?

• The nerve becomes inactive during stair climbing
• Level walking requires no hip motion
• Gluteus maximus is an ankle muscle
• Demand on gluteus maximus increases during forceful hip extension tasks

Q5. Which root-level lesion could potentially contribute to inferior gluteal nerve weakness while also affecting other L5-S2 structures?

• An isolated T6 lesion
• An isolated L1 lesion only
• A lesion involving L5, S1, or S2 fibers
• An isolated C5 lesion

Q6. Why does the inferior gluteal nerve approach gluteus maximus from its deep surface?

• It travels through the skin before entering the muscle
• It passes through the obturator foramen into the anterior thigh
• Its postpelvic course lies in the deep gluteal plane
• It reaches the muscle through the femoral canal

Q7. Which finding would argue against an isolated inferior gluteal nerve lesion?

• Weak forceful hip extension
• Difficulty rising from a low chair
• Reduced gluteus maximus activation
• Marked hip abduction weakness from gluteus medius and minimus paralysis

Q8. Why can a sacral plexus lesion produce a broader deficit than an isolated inferior gluteal nerve lesion?

• The sacral plexus supplies only gluteus maximus
• The inferior gluteal nerve contains every sacral plexus branch
• A plexus lesion cannot affect the sciatic nerve
• The plexus contains multiple peripheral nerve pathways before they separate

Q9. How does the posterior division origin of the inferior gluteal nerve relate to sacral plexus organization?

• It is formed only from anterior divisions of S3-S4
• It is formed from dorsal roots without ventral rami
• Its fibers are assembled from posterior divisions of L5-S2 ventral rami
• It arises directly from the femoral nerve

Q10. Which statement best integrates inferior gluteal nerve anatomy?

• It is an L4-S1 nerve that exits above piriformis to supply gluteus medius
• It is an L2-L4 lumbar plexus nerve that supplies quadriceps
• It is an S2-S4 sensory nerve supplying posterior thigh skin
• It is an L5-S2 posterior-division sacral plexus nerve that exits below piriformis and supplies gluteus maximus