Facet syndrome is a common source of chronic back and neck pain caused by wear and tear on the small joints that connect each vertebra in your spine. These joints, called facet joints, work alongside your spinal discs to allow your spine to bend, twist, and stay stable. When the cartilage inside these joints breaks down, the resulting inflammation and bone changes can produce persistent, deep pain that’s often difficult to pinpoint. Facet joints are responsible for a significant portion of chronic pain in the low back, mid-back, and neck.
How Facet Joints Work
Your spine has two facet joints at every level, one on each side. They’re synovial joints, meaning they have a fluid-filled capsule and a smooth cartilage lining, much like your knee or hip. Every time you arch your back, lean to one side, or turn your head, facet joints guide and limit that motion while bearing some of the load.
Because they share weight-bearing duties with the spinal discs, anything that shifts more load onto the facet joints accelerates their breakdown. A disc that loses height from degeneration, for example, forces the facet joints behind it to absorb more pressure than they were designed for. This is why disc problems and facet syndrome so often appear together.
What Causes the Joint to Break Down
Facet syndrome follows the same degenerative process as osteoarthritis in any other joint. The cartilage lining thins and frays, the underlying bone hardens (a process called sclerosis), and the joint capsule can calcify. Over time, the body grows bone spurs around the joint edges. These spurs can narrow the openings where nerves exit the spine, potentially causing additional symptoms beyond the joint pain itself.
Inflammation plays a central role in the pain. Nerve fibers run through both the joint capsule and the inner lining of the joint. When the joint degenerates, inflammatory chemicals build up in the tissue, directly irritating those nerve endings. This means facet joints can produce pain even without a visible structural injury on imaging, because the inflammation alone is enough to trigger symptoms.
Who Is Most at Risk
Several factors raise the likelihood of developing facet syndrome:
- Age over 45: cartilage naturally thins with time
- BMI over 25: extra body weight increases the compressive load on spinal joints
- Physical work or hobbies that strain the back: repetitive loading speeds up joint wear
- Disc degeneration: loss of disc height shifts more force onto the facet joints
- Weak spinal support muscles: without strong core and back muscles, the joints absorb more stress
- Past spinal surgery or injury: altered mechanics at the affected level can overload neighboring joints
What Facet Pain Feels Like
Facet pain is typically described as deep, dull, and hard to localize. It doesn’t feel sharp or electric the way a pinched nerve often does. Instead, it radiates in broad, poorly defined zones. In the neck, damaged facet joints commonly produce a heavy, aching pain that spreads into the upper back and shoulders. In the low back, pain often radiates into the buttocks and upper thighs but rarely travels below the knee, which can help distinguish it from sciatica.
Pain usually worsens with movements that compress the joints: arching backward, twisting, or standing for long periods. Sitting in a slightly forward-leaning posture often provides some relief because it opens the facet joints and reduces pressure on them. Morning stiffness is common, and many people notice that their pain flares after periods of inactivity and then loosens up somewhat with gentle movement.
When bone spurs grow large enough to narrow the nerve exit channels, symptoms can expand to include nerve-related problems such as numbness, tingling, or weakness in an arm or leg. Among lumbar facet complications, sensory changes are the most frequent, followed by motor weakness and reflex changes.
How Facet Syndrome Is Diagnosed
No single imaging study or physical exam finding can definitively confirm facet syndrome. MRI and CT scans can show joint enlargement, bone spurs, and cartilage loss, but many people with visible joint changes on imaging have no pain at all. Conversely, an inflamed facet joint can cause significant pain without dramatic structural changes. This disconnect between images and symptoms makes diagnosis tricky.
During a physical exam, a common provocative test involves extending and rotating the spine at the same time. If this motion reproduces your familiar pain, it raises suspicion that a facet joint is the source. The test is useful as a screening tool, but it isn’t specific enough to confirm the diagnosis on its own.
The gold standard for confirming facet-related pain is a diagnostic nerve block. A doctor injects a small amount of numbing medication near the tiny nerve that carries pain signals from the suspected facet joint. If the injection eliminates at least 80% of your primary pain for a duration consistent with the numbing agent used, the test is considered positive. Most guidelines require two separate positive blocks before proceeding to more advanced treatment, because a single block can produce misleading results.
Treatment: What to Expect
Physical Therapy and Exercise
Strengthening the muscles that support the spine is a first-line approach. The goal is to reduce the mechanical load on the facet joints by improving the stability that muscles provide. Exercises typically focus on retraining two key deep muscles: the transversus abdominis (the deepest layer of abdominal muscle) and the lumbar multifidus (small muscles that run along the spine). Training starts with controlled breathing and gentle abdominal hollowing exercises in a lying-down position, then progresses to movements like single-leg raises and knee abduction.
Manual therapy techniques that mobilize stiff spinal segments can also help. A therapist identifies the restricted level through hands-on assessment, then uses your own gentle muscle contractions against resistance to gradually restore normal joint movement. Combining mobilization with stabilization exercises tends to produce better results than either approach alone.
Injections
When physical therapy alone isn’t enough, facet joint injections with a corticosteroid and numbing agent can reduce inflammation directly inside the joint. These injections serve double duty: they confirm the pain source and provide temporary relief, typically lasting weeks to a few months.
Radiofrequency Ablation
For people who get consistent relief from diagnostic blocks but find that the effect wears off too quickly, radiofrequency ablation (RFA) offers a longer-lasting option. The procedure uses heat generated by a specialized needle to disable the small nerve carrying pain signals from the facet joint. It doesn’t fix the underlying arthritis, but it interrupts the pain pathway.
Pain relief from RFA typically lasts 6 to 12 months, and in some cases up to 2 years. In a study tracking long-term outcomes, about 53% of patients experienced at least a 50% reduction in pain, and 31% reported 75% or greater pain relief. Functional improvements were similar: 58% of patients gained at least 50% improvement in their ability to perform daily activities, and 18% reported complete restoration of function. When the nerve eventually regenerates and pain returns, the procedure can be repeated. Each additional treatment tends to provide roughly 10 to 16 months of symptom improvement in people who responded to the first one.
Living With Facet Syndrome
Facet syndrome is a chronic condition, but most people manage it effectively with a combination of exercise, activity modification, and periodic treatments when flare-ups occur. Maintaining a healthy weight reduces compressive load on the joints. Consistent core strengthening protects the joints from excessive stress during daily activities. Avoiding prolonged spinal extension, such as standing with an exaggerated arch in the low back, can minimize symptom triggers.
Because facet degeneration tends to progress slowly over years, the focus of management shifts over time. Early stages often respond well to physical therapy and occasional anti-inflammatory medication. If the condition advances, periodic injections or radiofrequency ablation can keep pain manageable without surgery. Surgical intervention is rarely needed and is generally reserved for cases where bone spurs cause significant nerve compression that doesn’t respond to other treatments.