Dear Mayo Clinic: I am in my late 50s and have started having stiffness in my back. I have become much less flexible and sometimes even have a hard time looking over my shoulder. I remember my ...

Rheumatoid arthritis often involves your wrists, knees, and feet. But it can also affect your spine. Most of the time, this kind of back pain responds well to arthritis treatments such as biologics.

The lumbar spine includes five vertebrae that help with mobility and stability. Lumbar vertebrae are larger because they carry the load from your head down to the lower spine. The lumbar spine has a ...