An otherwise healthy, 49 year old white male presents with c…
An otherwise healthy, 49 year old white male presents with c/o sudden onset of low back pain after lifting heavy boxes at work yesterday. He describes the pain as “sharp” and says it radiates down into his right buttock and right leg and reports “tingling and numbness” in the right foot and lateral toes. With exam, you notice that there is a + straight leg exam at 20 degrees to both legs with decreased patellar reflexes. The patient reports that he takes no medications regularly and has only taken OTC Ibuprofen for the pain with some effect. Which of the following differential diagnosis is most probable?