A heel post is a wedge-shaped piece built into the rear portion of a custom orthotic, and it plays a central role in correcting how your foot strikes the ground with every step. Podiatrists prescribe this feature to control excess motion at the heel, which can otherwise lead to pain that radiates up through the ankle, knee, and even the lower back. In this guide, we will explain exactly what a heel post does, how it is built into custom orthotics, and how to know if you need one. For a deeper technical breakdown, you can also review our complete guide to rear foot posting.
Quick answer: A heel post is a wedge added to the heel area of an orthotic to tilt the rearfoot into a more neutral position. This reduces overpronation or oversupination and eases strain on the feet, ankles, and knees.
A heel post is built into the rear of the orthotic shell to correct rearfoot alignment.
What Is a Heel Post?
A heel post is the corrective wedge built into the underside of the heel area on a custom orthotic. Specifically, it changes the angle at which your heel contacts the ground, which in turn influences how the rest of the foot and lower leg align during motion. Because the heel is the first part of the foot to strike the ground while walking, even a small correction here creates a meaningful ripple effect through the entire kinetic chain.
In practice, a podiatrist decides the exact thickness and angle of the post after examining how your foot moves. Consequently, no two heel posts are identical, since they are shaped around each patient's individual mold rather than a generic template.
Medial vs. Lateral Rearfoot Posting Explained
Rearfoot posting comes in two main forms, and understanding the difference helps explain why a proper diagnosis matters. A medial heel post is thicker along the inner edge of the heel, and it is used to correct overpronation, which is when the foot rolls too far inward. In contrast, a lateral heel post is thicker along the outer edge and addresses oversupination, where the foot rolls outward instead.
Both corrections aim for the same goal: a stable, neutral rearfoot position. However, applying the wrong type can worsen discomfort rather than relieve it, which is why a hands-on gait assessment is so important before fabrication begins. According to the American Podiatric Medical Association, professional evaluation of foot mechanics is a key step before recommending any corrective device.
How a Heel Post Corrects Foot Alignment
A heel post corrects foot alignment by physically limiting how far the heel can roll in one direction before the orthotic resists further motion. As a result, the ankle, shin, and knee no longer have to compensate for that excess movement on their own. Over time, this reduced strain often translates into less soreness after standing or walking for long periods.
Furthermore, better rearfoot alignment can improve how weight distributes across the rest of the foot. For example, patients with plantar fasciitis frequently notice reduced heel pain because the fascia is no longer stretched unevenly with each step. The Wikipedia entry on plantar fasciitis outlines how repetitive strain on this tissue is a leading cause of chronic heel pain, which posting is specifically designed to address.
Medial and lateral heel post placement correct opposite types of rearfoot motion.
Who Needs a Heel Wedge in Their Orthotics?
Not everyone requires a heel wedge, but several common conditions make one especially useful. These include flat feet, high arches with instability, plantar fasciitis, shin splints, and chronic knee pain linked to gait imbalance. In addition, athletes who log high mileage sometimes need posting simply to reduce cumulative joint stress.
On the other hand, someone with a naturally neutral gait may not need this correction at all. That is precisely why a proper mold and evaluation, rather than guesswork, should guide the decision. A study summarized by the U.S. National Library of Medicine notes that foot orthoses, including posted designs, are commonly recommended for mechanically driven foot pain when conservative measures are needed before considering more invasive treatment.
How Custom Heel Post Orthotics Are Made
Building a properly posted orthotic is a precise, multi-step process. Below is the general sequence a podiatrist-led practice follows from first consultation to finished device.
- Complimentary consultation: A podiatrist reviews your symptoms, foot type, and activity level to determine whether a heel post is appropriate.
- Foot mold and gait assessment: The practice takes a physical mold or scan of each foot and observes rearfoot movement while standing and walking.
- Correction angle calculation: Using the mold data, the exact medial or lateral wedge angle is calculated for a neutral, stable heel position.
- Fabrication of the shell and post: Technicians build the orthotic shell around the mold and attach the heel post at the calculated angle.
- Fitting and adjustment: The finished orthotic is fitted to your shoes, gait is rechecked, and small adjustments are made for comfort.
Because this process relies on an individual mold rather than a mass-produced shape, it typically takes about two to three weeks from consultation to delivery. You can start this process by requesting a complimentary consultation directly through customorthotics.com.
Choosing the Right Posted Orthotic for Your Feet
Once a podiatrist confirms you need a heel post, the next decision is which orthotic style fits your footwear and lifestyle. For dress shoes or tighter footwear, a 3/4 length orthotic with a heel post often works best because it takes up less room in the shoe. For athletic shoes or boots, a full-length orthotic with a heel post provides support all the way to the toes.
Patients dealing with forefoot pain alongside rearfoot instability sometimes benefit from a sulcus orthotic with a heel post, which extends support closer to the toes for added stability. In any case, browsing the full collection of custom orthotics alongside a podiatrist's recommendation is the most reliable way to match the right design to your feet.
Heel Post Orthotics vs. Standard Insoles
Standard, off-the-shelf insoles typically provide cushioning but little to no true correction. In contrast, a custom orthotic with a heel post is built from an individual mold, which means the wedge angle matches your exact foot mechanics rather than an average shape. As a result, the correction is far more precise and often more effective for chronic pain.
Additionally, standard insoles wear down quickly and offer no adjustment if your needs change. Custom heel post orthotics, however, are typically more durable and can be reassessed and refined over time as part of ongoing podiatric care. The general concept of orthoses correcting foot mechanics is well documented on Wikipedia's orthotics overview, which distinguishes custom-molded devices from generic supports.
A podiatrist checks the fit of a custom orthotic before finalizing the heel post angle.
Frequently Asked Questions About Heel Posts
What is a heel post in an orthotic?
A heel post is a wedge-shaped piece built into the rear portion of an orthotic that tilts the heel into a more neutral position. It controls how much the foot rolls inward or outward during walking.
How does a heel post reduce foot pain?
A heel post limits excess rearfoot motion, which reduces strain on the plantar fascia, Achilles tendon, and ankle joint. As a result, many patients notice less heel and arch pain within a few weeks of wearing posted orthotics.
What is the difference between a medial and lateral heel post?
A medial heel post is thicker on the inner edge of the heel and corrects overpronation, while a lateral heel post is thicker on the outer edge and corrects oversupination. A podiatrist determines which type fits your gait pattern.
Do all custom orthotics include a heel post?
No, not every orthotic design includes one. A heel post is added specifically when a mold and gait analysis show rearfoot instability that needs correction, so it is prescribed rather than automatically included.
How long does it take to get used to a heel post?
Most people adjust within one to three weeks of gradually increasing wear time. Starting with a few hours a day and building up helps the foot and lower leg muscles adapt comfortably.
Can a heel post fix flat feet permanently?
A heel post cannot permanently reshape the foot's bone structure, but it can significantly improve alignment and reduce pain while worn. Consistent use often prevents the secondary problems flat feet tend to cause.
How much does a custom orthotic with a heel post cost?
Pricing varies by provider and materials, but custom-molded orthotics with a heel post typically cost more than off-the-shelf inserts because they involve individual fitting and hands-on fabrication. Many practices, including ours, offer a complimentary consultation to discuss options first.
What is the difference between a heel post and a heel cup?
A heel cup cradles the fatty pad under the heel for cushioning and shock absorption, while a heel post is a rigid or semi-rigid wedge that controls alignment. Orthotics often combine both features for support and comfort.
Who typically needs rearfoot posting in their orthotics?
People with plantar fasciitis, overpronation, flat feet, shin splints, or chronic knee pain from gait imbalance often benefit from rearfoot posting. A podiatrist evaluation confirms whether this correction applies to your specific foot mechanics.
Can I add a heel post to shoes I already own?
A heel post is built into the orthotic itself rather than added directly to a shoe. However, a properly fitted custom orthotic with a heel post can be transferred between multiple pairs of supportive shoes.
What common mistakes do people make with posted orthotics?
A frequent mistake is wearing new posted orthotics all day immediately instead of breaking them in gradually. Another is choosing an over-the-counter insert instead of a custom mold, which cannot match the precise correction angle a heel post requires.
How is the correct heel post angle determined?
A podiatrist measures the foot's resting and functional position, often using a cast or 3D scan, to calculate the exact degree of correction needed. This angle is then built into the mold before fabrication.
Is a heel post the same thing as an orthotic wedge?
Yes, the terms heel post, rearfoot post, and heel wedge are generally used interchangeably in podiatry to describe the same corrective element at the back of the orthotic.
Final Thoughts on Heel Posts
In summary, a heel post is a small but powerful feature that shapes how your entire foot and leg move with each step. Whether correcting overpronation with a medial post or oversupination with a lateral post, this wedge addresses the root mechanical cause of pain rather than simply cushioning the symptom. Above all, getting the angle right requires an individual mold and a professional gait assessment, not a generic insert.
If you suspect a heel post could help your feet, ankles, or knees feel better, the next step is a proper evaluation. You can request a complimentary consultation and explore custom fabrication options at customorthotics.com to start the process toward a properly posted, pain-relieving orthotic.