Review Question - QID 2961

A 68-year-old man presents with bilateral buttock and leg pain, worse on the right. His pain is worse with prolonged standing and improves with sitting. His symptoms have progressed to the point that it is now difficult for him to walk to the mailbox. His physical exam is remarkable for 4/5 weakness to ankle dorsiflexion on the right. Four months of physical therapy and a series of epidural corticosteroid injections failed to improve his symptoms.
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