AKT-5001

AKT-5001

You see a 75-year-old male patient with back pain. He reports having lower back pain for the past year, which has gradually worsened. The pain now radiates bilaterally to his buttocks, thighs, and legs, with the left leg being worse than the right. He describes the pain as ‘cramping’ and ‘burning’. Walking for more than a few minutes causes weakness and numbness in his legs, which improves when he sits down and leans forward. Standing exacerbates the symptoms, and he has lost his independence and now uses a walking aid. His wife has noticed a more stooped posture than 12 months ago.

The patient’s medical history includes hypertension, which is controlled with medication. He has never smoked and has a normal BMI. On examination, he has a wide-based gait, and neurological examination of his lower limbs is normal. Peripheral pulses feel normal.

What is the most likely diagnosis based on the patient’s presentation and examination findings?