Plantar Fasciitis: Why It Happens and How to Treat It Effectively
By Dr. Kayla Wright, DPM · 4 min read
Plantar fasciitis is the single most common cause of chronic heel pain in adults, and if you've got it, you know the signature feeling: a sharp, stabbing pain under the heel with your first steps in the morning. The reassuring part is that most people recover with conservative care. Here's how it works and what the evidence says actually helps.
What is the plantar fascia?
The plantar fascia is a thick, tough band of connective tissue that runs along the sole of your foot, from the heel bone to the base of the toes. It supports your arch and absorbs shock as you walk and run. Plantar fasciitis develops when repetitive stress irritates this tissue at its origin on the inside of the heel bone.
The tissue experiences its greatest tension during the push-off phase of each step, right near where it attaches to the heel, which is exactly where most people feel the pain.
What causes it?
Plantar fasciitis affects both active people and more sedentary adults. Common contributors include:
- Tight calf muscles, which increase load on the fascia and are frequently associated with the condition
- Spending long hours on your feet
- A rapid increase in running or walking volume
- Higher body weight
- Unsupportive footwear
How it's diagnosed
In most cases, no scans are needed. The diagnosis is made from your history and a focused exam, classically pinpoint tenderness at the inside edge of the heel bone. Imaging is reserved for atypical cases or ones that don't respond to initial treatment, partly to rule out other causes like a stress fracture. If your heel pain doesn't fit the usual pattern, our heel pain guide covers the other possibilities.
What actually works
The honest reality from the research is that no single treatment is a magic bullet, and most patients improve with conservative measures. What has the best support:
- Stretching. Plantar fascia–specific stretching has moderate-quality evidence for reducing pain in the short term, and it's a cornerstone of treatment. Calf stretching is a valuable companion because calf tightness feeds the problem.
- Footwear and inserts. A supportive shoe with a cushioned, arch-supporting insert reduces strain. Notably, controlled research has found that prefabricated inserts plus stretching can be as effective as, or more effective than, custom orthotics in many cases, so starting with a quality off-the-shelf option is reasonable. Our shoes and orthotics guide explains how to choose.
- Activity modification. A few weeks of reduced impact lets the inflammation settle while you stay active with lower-impact options.
- Night splints. These provide a gentle overnight stretch and can help with severe morning pain, though adherence can be a challenge.
Most people turn the corner within a few months on this kind of program.
When conservative care isn't enough
For cases that persist despite months of consistent first-line care, two non-invasive, evidence-supported treatments are worth discussing before considering injections or surgery:
- Shockwave therapy (ESWT) has high-quality evidence for a large effect on pain and function in plantar fasciitis, both short and long term. It's one of the best-supported non-surgical options for stubborn cases.
- MLS laser therapy has pooled randomized-trial evidence showing reduced heel pain, with benefit lasting for months.
Surgery (a plantar fascia release) is genuinely a last resort, generally considered only after 9 to 12 months of consistent conservative treatment has failed.
Keeping it from coming back
Prevention comes down to maintaining calf and foot flexibility, progressing activity gradually, managing your training load, and wearing shoes appropriate for your activity. Our injury prevention guide has practical steps.
Get a plan that works for your feet
Dr. Kayla Wright, DPM, will diagnose the true source of your pain and match you with the right treatment, from simple stretching programs to advanced non-surgical options. Request an Appointment.
About the author Dr. Kayla Wright, DPM, is a podiatric physician and foot & ankle surgeon serving the East Valley. Learn more at drkaylawright.com.
This article is for general educational purposes and is not a substitute for individualized medical advice.
Sources
- Latt LD, Jaffe DE, Tang Y, Taljanovic MS. Evaluation and Treatment of Chronic Plantar Fasciitis. Foot Ankle Orthop. 2020;5(1). https://pubmed.ncbi.nlm.nih.gov/35097359/
- Koc TA Jr, Bise CG, Neville C, et al. Heel Pain – Plantar Fasciitis: Clinical Practice Guidelines Revision 2023. J Orthop Sports Phys Ther. 2023;53(12):CPG1–CPG39. https://www.orthopt.org/uploads/content_files/files/Heel_Pain_Plantar_Fasciitis_Revision_2023.pdf
- Charles R, Fang L, Zhu R, Wang J. The effectiveness of shockwave therapy on patellar tendinopathy, Achilles tendinopathy, and plantar fasciitis: a systematic review and meta-analysis. Front Immunol. 2023;14:1193835. https://pmc.ncbi.nlm.nih.gov/articles/PMC10468604/
- Wang W, Jiang W, Tang C, Zhang X, Xiang J. Clinical efficacy of low-level laser therapy in plantar fasciitis: A systematic review and meta-analysis. Medicine (Baltimore). 2019;98(3):e14088. https://pubmed.ncbi.nlm.nih.gov/30653125/