Shoe Buying Guide: How to Choose the Right Shoe (A Podiatrist’s Complete Guide)

After 3,000+ surgeries and more than two decades in podiatric practice, I can identify a bad shoe-buying decision faster than most patients can describe their pain. The majority of the overuse injuries I treat — plantar fasciitis, metatarsal stress fractures, neuromas, heel spurs, Achilles tendonitis — have a footwear component. Not always the sole cause, but almost always a contributing factor. The good news: proper shoe selection is one of the highest-leverage things you can do for foot health, and it costs nothing extra if you know what to look for.

This is the guide I wish every patient read before their first appointment.

When and Where to Shop

Shop in the Afternoon, Not the Morning

Feet swell throughout the day — up to a full shoe size by late afternoon — due to gravity-dependent fluid accumulation and activity. If you shop in the morning, the shoe that fits perfectly may be tight and painful by 3pm. Shop between 2pm and 6pm when your feet are at their largest. This is especially important for patients with any degree of venous insufficiency, lymphedema, or jobs requiring prolonged standing.

Specialty Running Stores vs. Department Stores

For athletic shoes, specialty running and walking stores offer gait analysis, trained staff, and a return policy that lets you test shoes on real surfaces. Department stores offer price and convenience but zero expertise. For patients with specific foot conditions, the specialty store consultation is worth the premium — staff who watch you walk for 30 seconds can identify overpronation, supination, and limping patterns that point to the right footwear category before you’ve spent a dollar.

Online buying is fine for replacing a shoe you already know works. It’s a gamble for first-time purchases of a new model, especially in brands you haven’t worn before.

How to Measure Your Feet Correctly

Most adults haven’t had their feet properly measured since childhood. Foot length and width change throughout adulthood — pregnancy, weight changes, aging, and previous injuries all affect foot dimensions. Here’s the protocol I recommend:

1. Measure standing, not sitting. Weight-bearing flattens the arch and lengthens the foot. Sitting measurements are consistently 1/4–1/2 size smaller than standing measurements.
2. Measure both feet. The dominant foot (right in most right-handers) is typically 1/2 size larger than the other. Always buy for the larger foot.
3. Measure in the afternoon. Same reason as shopping timing — maximum foot volume.
4. Measure length and width. Most shoe stores measure length only. Width (AA through 6E for men, AA through EE for women) is equally important. Buying the right length in the wrong width causes bunions, corns, hammertoes, and neuromas.
5. Add 3/8–1/2 inch (1–1.5cm) to your measured length. This is the “thumb’s width” rule — there should be approximately one thumb’s width of space between your longest toe and the end of the shoe. Your longest toe is often not the big toe (about 20% of people have a second toe that’s longer).

Shoe Anatomy: What Actually Matters

Most people know “upper” and “sole.” Here’s the anatomy that affects your foot health:

• Heel counter: The stiffened cup at the rear of the shoe that holds the heel in place. A firm heel counter prevents excessive rearfoot motion (pronation and supination). Test it: squeeze the heel of the shoe from both sides. It should feel firm and spring back to shape — not collapse under moderate pressure.
• Shank: The structural plate embedded between the insole and outsole running from the heel to approximately the ball of the foot. The shank provides torsional rigidity (resistance to twisting). A shoe with no shank is essentially a sock with a sole — it provides no midfoot support. Test: hold the shoe at the toe and heel and try to twist in opposite directions. It should resist firmly.
• Midsole: The layer between the insole and outsole — where all the cushioning and support technology lives. EVA (Ethylene-vinyl acetate) is the industry standard: lightweight, compressible, comfortable. Polyurethane (PU) is denser and more durable but heavier. Newer foams (Pebax, PEBA, TPU) offer higher energy return at lower weight.
• Outsole: The bottom rubber layer that contacts the ground. Harder rubber compounds (carbon rubber) last longer; softer blown rubber provides better traction on smooth surfaces. Visible outsole wear patterns tell you about your gait — wear on the lateral heel indicates normal heel strike; wear on the medial forefoot indicates excessive pronation.
• Toe box: The front of the shoe where your toes sit. Width and depth here determine whether you develop hammertoes, corns, and neuromas. Stand in the shoe and try to wiggle all five toes simultaneously — they should all move freely without touching the upper.
• Last: The 3D form around which the shoe is built. A straight last (shoe bottom runs in a relatively straight line) is better for flat feet. A curved last curves toward the outside (better for high-arched feet). A semi-curved last suits most people.

The 5-Point Fit Test

Do this before buying any shoe:

1. Thumb test (length): Press your thumb down between your longest toe and the front of the shoe. You should fit one full thumb width without pressing hard. Less = too short. More than 1.5 thumbs = too long (the shoe will twist as your foot slides forward).
2. Pinch test (width): Pinch the upper material at the widest part of your foot (usually at the metatarsal heads). You should be able to pinch a small amount of fabric — about 1/4 inch. If the fabric is stretched flat against your foot, the shoe is too narrow. If you’re pinching more than 1/2 inch, consider a narrower width.
3. Heel slip test: With the shoe laced normally, walk briskly and notice if the heel lifts away from the counter. A small amount (< 1/4 inch) is normal on a new shoe. More than that means the shoe is too long, too wide, or the heel counter is inadequate.
4. Toe splay test: Stand in the shoe and spread all five toes as wide as you can. They should be able to spread without any toe pressing into the upper. This is where most shoes fail — the toe box is too narrow for the natural splay required during push-off.
5. Walk test: Walk at your normal pace on a hard surface for at least 2 minutes. Note any areas of pressure, rubbing, or restriction. The ball of your foot should flex where the shoe flexes — if the flex point of the shoe is behind your metatarsal heads, it will fight your natural gait.

Choosing by Activity Type

A safe benchmark to compare any shoe against — the neutral Brooks Ghost 16. Men’s and women’s, verified in stock:

Activity	Key Features	Avoid
Daily walking	8–12mm drop, firm shank, removable insole, leather or mesh upper	Flexible soles, flat designs
Running	Activity-matched drop, category-specific (neutral/stability/motion control), replace at 300–500 miles	Using for lateral movements, lateral workouts
Hiking	Waterproofing (GTX), ankle support (mid/high cut), Vibram outsole, size up 1/2–1 size	Trail shoes for technical terrain they’re not rated for
Cross-training/gym	Wide flat base, minimal drop (4–8mm), lateral containment, firm heel	Running shoes, soft midsoles for heavy lifting
Nursing/healthcare	Slip-resistant outsole, extra cushioning, wide toe box, lightweight, easy to clean	Fashion clogs without arch support, minimal footwear
Standing all day	Anti-fatigue midsole, firm shank, heel cup, moisture management upper	Completely flat designs, thin soles

Choosing by Foot Condition

Plantar Fasciitis

Prioritize: removable insole (for orthotics), 8–12mm heel drop, firm shank, generous heel cushioning, firm heel counter. Avoid: flat ballet-type shoes, zero-drop shoes (until the condition resolves), flexible soles. Top brands: HOKA, Brooks, ASICS, New Balance stability line.

→ See our full plantar fasciitis shoe guide

Flat Feet / Overpronation

Prioritize: motion control or stability category shoes (not neutral), medial post or dual-density midsole, firm heel counter, straight or semi-curved last. Avoid: neutral shoes, curved lasts. Top brands: Brooks Addiction line, ASICS Gel-Kayano, New Balance 860/860v14.

Bunions

Prioritize: wide toe box (D or E width minimum for women, 2E minimum for men), soft upper material at the bunion prominence, round or square toe profile. Avoid: any pointed toe, narrow fashion shoes, shoes that require breaking in at the bunion. Top brands: New Balance (multiple widths available), Vionic, Altra (wide toe box as standard).

Diabetic Foot

Prioritize: extra-depth design (for custom orthotics and inserts), seamless or minimal-seam interior, soft leather or mesh upper that won’t create pressure points, firm but cushioned sole, good breathability. Consider: prescription depth shoes through Medicare Part B if you have diabetes with neuropathy. Brands: Orthofeet, Drew, New Balance 928 series.

When to Replace Your Shoes

Frequently Asked Questions

How much should I spend on shoes?

For athletic or walking shoes, $100–$160 is the sweet spot where biomechanical features (genuine cushioning, proper shank construction, quality heel counters) are consistently present. Below $60, you’re usually getting fashion-focused construction without the structural elements that matter. Above $200, you’re often paying for brand prestige or performance technology (carbon plates, advanced foams) that most non-elite athletes don’t benefit from. The exception: dress shoes, where the $60 budget shoe is almost always worse for your feet than a $150 option with genuine midsole technology.

Should I buy shoes a size bigger?

Yes — for most people, the correct athletic shoe size is 1/2 to 1 full size larger than your measured foot length. This provides the thumb’s-width clearance needed for toe splay during push-off and accommodates afternoon foot swelling. For hiking boots specifically, size up a full size and wear the socks you’ll hike in when fitting. The main exception: sandals and slip-ons, where too much length causes the shoe to slip off.

What do podiatrists look for in a shoe?

When I evaluate a shoe for a patient, I check these in order: (1) Can I twist it? (torsional rigidity). (2) Does the heel counter resist compression? (3) Is there a removable insole? (4) Is the toe box wide enough for the patient’s forefoot width? (5) What is the heel-to-toe drop? (6) Is the midsole appropriate for the patient’s activity and foot type? Brand name is irrelevant — I’ve recommended shoes from Walmart and rejected expensive designer footwear from the same patient visit.

Are expensive shoes worth it?

Often, yes — but not always. The difference between a $60 and a $130 running shoe is usually meaningful: better midsole technology, more consistent quality control, and features designed around actual biomechanical research. The difference between $130 and $300 is often less meaningful for the average patient — mostly marketing and materials that matter to elite runners. Buy the best shoe that fits your activity, foot type, and condition — not the most expensive one.

The Bottom Line

The right shoe is the one that fits your specific foot geometry, activity demands, and any existing conditions — not the most stylish or the most expensive. Measure both feet standing in the afternoon, apply the 5-point fit test before buying, look for a stiff shank and firm heel counter as non-negotiables, and match the shoe to your activity. Replacing shoes on schedule (not when they “look worn”) eliminates a large category of overuse injuries I see weekly in my practice. A good shoe is the cheapest preventive medicine available.

Sources

1. Menz HB, et al. “Foot problems in elderly: the contribution of footwear inadequacy.” Journal of the American Podiatric Medical Association. 1999;89(7):347-352.
2. Burns SL, Leese GP, McMurdo ME. “Older people and ill fitting shoes.” Postgraduate Medical Journal. 2002;78(920):344-346.
3. Nigg BM, et al. “The role of footwear on performance in sport and during exercise.” Sports Medicine. 2010;40(8):641-651.
4. Witana CP, Feng J, Goonetilleke RS. “Dimensional differences for evaluating the quality of footwear fit.” Ergonomics. 2004;47(12):1301-1317.
5. American Orthopaedic Foot and Ankle Society. “How to Buy an Athletic Shoe.” Patient Education Resource. 2024.

In-Office Treatment at Balance Foot & Ankle

Dr. Tom Biernacki DPM provides expert in-office care at Balance Foot & Ankle, serving Howell and Bloomfield Hills, Michigan. Learn more about scheduling your appointment at Balance Foot & Ankle. Same-day appointments: (810) 206-1402 | New Patient Information