Medically reviewed by Dr. Tom Biernacki, DPM — Board-Certified Podiatric Surgeon — Balance Foot & Ankle, Howell & Bloomfield Hills, MI. Last updated April 2026.

What Is Overpronation?

Pronation is a normal, essential component of the foot’s gait cycle — the inward rolling of the foot that occurs during the loading phase of walking and running to absorb shock, adapt to surface irregularities, and allow the leg to internally rotate during mid-stance. Without any pronation, the foot would be unable to cushion impact or accommodate the ground, and the forces of each step would be transmitted directly up the skeleton. The problem is not pronation per se, but excessive pronation — commonly called overpronation — where the foot rolls inward beyond the biomechanically appropriate range, causing sustained flat-foot loading that places abnormal stress on the plantar fascia, posterior tibial tendon, peroneal tendons, and the ankle, knee, hip, and lower back as the kinetic chain is altered.

Overpronation is one of the most discussed terms in sports medicine and podiatry — and also one of the most misapplied. Not all people with flat feet overpronate, not all overpronators have symptoms, and the relationship between overpronation and injury is complex and multifactorial rather than the simple causal relationship often implied. A podiatric biomechanical evaluation provides an accurate, individualized assessment rather than a generic label.

How Overpronation Causes Problems

When the foot excessively pronates, the arch collapses significantly toward the ground during weight-bearing, causing the talus (ankle bone) to roll inward and the calcaneus (heel) to evert (tilt outward). This collapses the medial arch and creates excessive tensile load on the plantar fascia and posterior tibial tendon — the two structures most vulnerable to overuse injury in overpronators. The inward talar roll causes internal rotation of the tibia, which subsequently causes the femur to internally rotate, the knee to move into valgus (inward collapse), and the hip abductors to work harder to stabilize the pelvis. This kinetic chain effect explains why overpronation is associated not just with plantar fasciitis and posterior tibial tendon dysfunction but also with patellofemoral pain syndrome, IT band syndrome, and hip bursitis.

Diagnosing Overpronation

A clinical biomechanical examination by a podiatrist provides the most accurate assessment of pronation. The evaluation includes standing alignment assessment (heel valgus, medial arch height, “too many toes” sign from forefoot abduction), gait analysis (video or direct observation of the pronation pattern during walking and running), flexibility assessment (ankle dorsiflexion range, Silfverskiold test for gastrocnemius tightness), and muscle strength testing. Foot pressure mapping (pedobarograph) provides quantitative data on plantar pressure distribution and can demonstrate asymmetric loading patterns. Digital gait analysis is particularly valuable for runners, as pronation patterns differ significantly between walking and running speeds.

Treatment: From Footwear to Orthotics to Rehabilitation

Overpronation management is not one-size-fits-all. Motion-control running shoes with medial post support reduce pronation through shoe architecture and are appropriate for mild-to-moderate overpronation in recreational runners. Custom foot orthotics with medial arch support, heel cup, and appropriate valgus wedging provide more precise and comprehensive biomechanical correction tailored to the individual’s specific pronation pattern. Custom orthotics consistently outperform generic arch supports and motion-control shoes for significant overpronation because they are designed to the exact geometry of the individual foot rather than a population average.

Strengthening the posterior tibial muscle (the primary dynamic arch supporter) and intrinsic foot muscles builds the active support that reduces the demand on passive structural support from the plantar fascia and ligaments. Gastrocnemius-soleus flexibility work reduces the ankle equinus that drives compensatory pronation. Reducing or eliminating identified footwear contributors (high heels, flat shoes without support) is an essential environmental modification. Most patients with symptomatic overpronation achieve excellent outcomes with custom orthotics and targeted strengthening, without surgery.

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Overpronation Treatment & Custom Orthotics in Michigan

Overpronation contributes to plantar fasciitis, shin splints, bunions, and knee pain. At Balance Foot & Ankle, Dr. Tom Biernacki provides biomechanical assessment and custom orthotics to correct pronation issues — serving Howell and Bloomfield Hills, MI.

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Clinical References

1. Nigg BM, Nurse MA, Stefanyshyn DJ. Shoe inserts and orthotics for sport and physical activities. Med Sci Sports Exerc. 2003;31(7):S421-S428.
2. Mills K, Blanch P, Chapman AR, McPoil TG, Vicenzino B. Foot orthoses and gait: a systematic review and meta-analysis of literature pertaining to potential mechanisms. Br J Sports Med. 2010;44(14):1035-1046.
3. Cheung RT, Chung RC, Ng GY. Efficacies of different external controls for excessive foot pronation: a meta-analysis. Br J Sports Med. 2011;45(9):743-751.

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Dr. Tom Biernacki, DPM

Dr. Tom Biernacki, DPM is a double board-certified podiatrist and foot & ankle surgeon at Balance Foot & Ankle Specialists in Southeast Michigan. With over a decade of clinical experience, he specializes in heel pain, bunions, diabetic foot care, sports injuries, and minimally invasive surgery. Dr. Biernacki is a member of the APMA and ACFAS, and his patient education content on MichiganFootDoctors.com and YouTube has reached over one million views.