Degenerative joint disease (DJD) of the spine, also known as spinal osteoarthritis, refers to the deterioration of the cartilage and discs that cushion the vertebrae in the neck and back. This leads to stiffness and shrinkage of these structures.
Here's a more detailed breakdown:
- Cartilage Breakdown: The cartilage that cushions the joints between the vertebrae gradually wears away. This loss of cartilage allows the bones to rub together.
- Disc Degeneration: The intervertebral discs, which act as shock absorbers between the vertebrae, can dry out and shrink over time. This loss of disc height can narrow the space between the vertebrae.
- Bone Spurs (Osteophytes): As the body attempts to stabilize the spine, it may form bone spurs along the edges of the vertebrae. These bone spurs can sometimes press on nerves, leading to pain, numbness, or weakness.
- Stiffness and Pain: The degeneration of cartilage and discs, along with the formation of bone spurs, can cause stiffness and pain in the neck or back.
In summary, DJD of the spine involves a breakdown of the cushioning structures in the spine, leading to pain, stiffness, and potential nerve compression.
