What is Spondylosis?
Spondylosis is not a single disease but rather a description of the osteoarthritis that occurs in the spine. As we age, the components of the spine—discs, ligaments, and bone—undergo structural changes.
While "spondylitis" refers to inflammation and "spondylolisthesis" refers to a slipped vertebra, spondylosis refers specifically to the degeneration of the spinal structures.
Causes & Pathology
Degeneration is largely driven by the natural aging process. The following specific changes typically occur:
Spinal discs act like cushions. Over time, they lose moisture and shrink, reducing the "shock absorber" effect between vertebrae.
Cracks in the disc exterior can allow the soft inner material to bulge out, potentially pressing on nerves.
Also called osteophytes, these are extra bone growths the body creates to stabilize the spine, which can inadvertently narrow nerve pathways.
Ligaments connect bone to bone. With age, they can thicken and become less flexible, contributing to spinal stiffness.
Signs & Symptoms
Interestingly, many people with spondylosis show significant changes on X-rays or MRIs but experience no symptoms at all. When symptoms do occur, they often include:
- A
Pain & Stiffness: Particularly in the neck (cervical) or lower back (lumbar), often worse after periods of inactivity.
- B
Headaches: Specifically "cervicogenic" headaches stemming from wear in the upper neck.
- C
Nerve Compression: Numbness, tingling ("pins and needles"), or weakness in the arms or legs.
- D
Loss of Balance: In advanced cases where the spinal cord is compressed, walking may become difficult.
Risk Factors
Risk increases significantly after age 40. By age 60, the vast majority of individuals show some evidence of spondylosis on imaging.
Jobs requiring repetitive heavy lifting or awkward postures accelerate wear. Smoking and obesity also increase the metabolic strain on spinal discs.
Old injuries to the neck or back can lead to "post-traumatic" spondylosis years later as the spine heals unevenly.
Treatment Options
The goal of treatment is to manage pain and maintain function. Most cases do NOT require surgery.
Non-Surgical Management
- Physical Therapy: Strengthening the "core" and neck muscles to take pressure off the spinal joints.
- Medication: NSAIDs (Advil, Aleve) for inflammation, or muscle relaxants for spasms.
- Exercise: Low-impact activities like swimming or walking to maintain flexibility.
- Injections: Steroid injections can provide temporary relief for localized inflammation.
Surgery is rare and typically reserved for "Myelopathy" (spinal cord compression) or "Radiculopathy" (severe nerve pain/weakness) that does not respond to therapy.
Potential Complications
While usually a manageable condition, severe untreated spondylosis can lead to:
- Spinal Stenosis: Significant narrowing of the spinal canal.
- Chronic Pain: Which can impact mental health and mobility.
- Neurological Deficits: Permanent weakness or loss of sensation if a nerve is pinched for too long.
Frequently Asked Questions
Is spondylosis the same as a slipped disc?
No, but they are related. Spondylosis is the overall wear-and-tear process; a slipped (herniated) disc is one specific event that can happen as a result of that wear.
Can I prevent spondylosis?
You cannot stop the aging process, but you can minimize the impact by maintaining a healthy weight, exercising regularly, and using proper ergonomics at work.
Understanding Spinal Anatomy
Watch a 3D breakdown of how discs and joints change with age.
View Animation →
