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* 1. Case 1: A 16 yo boy comes into see you with lower back pain.  He's an elite soccer player. Felt it while sprinting for a ball 4 weeks ago. His back is still sore. He points to his lumbar spine. What is the differential?

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* 2. Case 2: A 42 year old man presents to your clinic with severe lower back pain ongoing x 5 days. He points to his lumbar spine. He has no alleviating or aggravating factors. He has a history of low back pain. He denies any trauma or injury. 2A) What is important to rule out in this case?

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* 3. Case 2B: What is the differential for this case?

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* 4. Case 3A: A 68 year old presents with right leg radicular pain x 6 weeks. In lumbar spinal stenosis, what positions and activities are going to make this patient's symptoms worse?

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* 5. Case 3B: What positions and activities are going to help or relieve this patient's symptoms.

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