If an X-ray turned up a "heel spur," it is natural to assume you have found the culprit behind your heel pain. But here is the counterintuitive truth: the spur is usually not what hurts. Plantar fasciitis and heel spurs are related findings that often show up together, but they are different things — and the soft tissue, not the bone, is almost always the pain source.
Two different findings that travel together
Plantar fasciitis is a soft-tissue condition. It is irritation and degeneration of the plantar fascia — the thick band of connective tissue that runs along the bottom of your foot from the heel to the toes — most often right where it anchors to the heel bone. It produces the classic sharp, stabbing pain with the first steps after rest.
A heel spur (a calcaneal spur) is a small, bony outgrowth that forms on the heel bone and shows up on a plain X-ray. It develops in response to chronic traction and stress at that same attachment point, which is exactly why spurs and plantar fasciitis so often appear in the same foot. They share a mechanical origin, which is what makes them easy to conflate. But one is tissue and one is bone — and confusing the two leads people to chase the wrong target.
Why the spur usually isn't the pain source
The clearest evidence that the spur is not the villain comes from looking at who actually has one. Heel spurs are extremely common in people with no heel pain at all — reported in anywhere from roughly 10% to 63% of asymptomatic individuals — while they show up in an overlapping range of patients who do have plantar fasciitis (plantar heel pain, StatPearls). In other words, plenty of pain-free heels have spurs, and plenty of painful heels have none.
Studies looking directly at the relationship reinforce this. The presence or absence of a spur is not useful for diagnosing plantar fasciitis, and calcaneal spurs are widely regarded as an incidental finding rather than a reliable pain generator (coexistence of plantar calcaneal spurs and plantar fascial thickening, PMC; classification of calcaneal spurs and their relationship with plantar fasciitis, PubMed). Tellingly, when heel pain resolves with treatment, the spur stays right where it was — the bone did not change, but the pain went away. That alone tells you the spur was not driving the symptoms.
There is also debate about how spurs even form. Rather than the old picture of a spur growing into the fascia like a thorn, evidence suggests calcaneal spurs may develop within layers of the heel in response to vertical compression and load, not simply longitudinal pulling — another reason to stop thinking of the spur as a spike stabbing the tissue (plantar calcaneal spurs in older people, PMC).
Why the distinction changes your treatment
This matters because it points care in the right direction. If the spur were the problem, the logical fix would be removing the bone. Since the inflamed plantar fascia is the actual pain source, treatment targets the soft tissue — and most people get better without anyone ever touching a spur.
That means the same well-established, first-line plan applies whether or not a spur shows on your X-ray: calf and plantar-fascia stretching, supportive footwear or orthotic inserts, activity modification, and time. These measures resolve the large majority of cases. Surgery to remove a heel spur is uncommon and is reserved for narrow, refractory situations — and even then, addressing the fascia usually matters more than the bone.
It also reframes how heel pain is diagnosed in the first place. Because a spur on an X-ray tells you so little about the cause of pain, the diagnosis of plantar fasciitis rests primarily on the history and physical exam — the sharp first-step pain after rest, tenderness right at the fascia's attachment to the heel, and reproduction of the pain when the toes and foot are flexed upward to put the fascia on stretch. Imaging is used to rule out other problems or to look at the soft tissue itself, not to hunt for a spur. When imaging does add value, ultrasound and MRI can show thickening and degeneration of the plantar fascia — the actual tissue changes behind the pain — which is far more informative than a bony spur on a plain film.
So if your imaging report highlighted a spur, do not let it become a distraction. It is most likely a bystander, not the cause.
When heel pain won't quit
The real clinical question is not "is there a spur?" but "why is this heel still hurting after honest treatment?" When plantar fasciitis persists for many months despite a committed conservative program, the driver is usually chronic irritation and degeneration in the fascia itself — and that is where a closer evaluation should focus, not on the incidental bone on the X-ray. For refractory cases, additional options exist, including minimally invasive outpatient approaches, that are worth discussing once first-line care has had a fair chance.
If heel pain has outlasted what you have tried, our 2-minute foot assessment is a plain-language place to start, and you can explore the outpatient foot treatments we offer in more detail.
