What is lumbar hypertrophic disease in facet joints and thickening of the ligamentum flavum?mild-moderate facet hypertrophy l3-s1,lig flav thick l3-l4

It means there are: Degenerative changes occurring leading to enlargement of the small joints of the spine (2at each level ) along with degenerative enlargement of a ligament that connects each segment or level of the spine that could eventually lead to an overall narrowing of the spinal canal which may lead to a condition known as spinal stenosis. Smoking, being obese & a family hx of arthritis can accelerate it.