Same-Week Appointments at Balance Foot & Ankle
Three board-certified podiatric surgeons. 950K+ YouTube subscribers. 1,123+ five-star reviews. Howell & Bloomfield Hills, Michigan.
Medically reviewed by Dr. Tom Biernacki, DPM
Board-certified podiatric surgeon | Balance Foot & Ankle
Last reviewed: April 2026
Quick answer: The talus bone is the central ankle bone that connects the leg to the foot. It transmits all body weight from the leg into the foot and participates in the ankle, subtalar, and talonavicular joints. Talus injuries — including fractures, osteochondral lesions, and avascular necrosis — are serious because the talus has a limited blood supply that makes healing difficult.
Most people have never heard of the talus bone until something goes wrong with it. Then it becomes very significant, very quickly. In our clinic, talus problems range from minor osteochondral lesions (cartilage and bone surface damage) to severe fracture-dislocations that can permanently alter ankle function. Understanding the anatomy helps patients grasp why recovery from talus injuries is often longer and more complex than other foot fractures.
What Is the Talus Bone?
The talus (also called the ankle bone or astragalus) is one of the 26 bones of the foot. It sits at the top of the foot, sandwiched between the tibia and fibula (leg bones) above and the calcaneus (heel bone) below. Its unique position makes it the keystone of ankle mechanics.
About 60% of the talus surface is covered by cartilage — more than almost any other bone in the body. This cartilage allows smooth movement across three joints: the ankle joint (tibiotalar), the subtalar joint (between talus and calcaneus), and the talonavicular joint. All body weight during standing and walking passes directly through the talus.
Talus Bone Anatomy and Function
- Talar dome (trochlea) — the upper surface, covered in cartilage, that articulates with the tibia; the most common site of osteochondral lesions
- Talar head — the front portion that joins with the navicular bone; part of the arch mechanics
- Talar neck — the narrowed section connecting head and body; the most common fracture site
- Posterior process — the back of the talus; can develop an extra bone called os trigonum
- Subtalar facets — three surfaces on the bottom of the talus that articulate with the calcaneus, allowing inversion/eversion of the foot
Critically, the talus has no muscle attachments — no muscles pull on it. This means its blood supply comes entirely from surrounding soft tissues and ligaments. This limited vascularity is why talus fractures carry a high risk of avascular necrosis (AVN) — the bone loses its blood supply and dies, causing collapse.
Common Talus Bone Problems
Osteochondral Lesion of the Talus (OLT)
An osteochondral lesion involves damage to both the cartilage surface and the underlying bone of the talar dome. This is the most common talus problem we see in our clinic. It typically results from ankle sprains (the cartilage is sheared or compressed) and causes persistent deep ankle pain, swelling, and sometimes locking or clicking. MRI is required for diagnosis — plain X-rays often miss them.
Talus Fracture
Talus fractures are uncommon (accounting for about 1% of all fractures) but serious. They usually result from high-energy trauma — motor vehicle accidents, falls from height. Talar neck fractures are the most serious; because the fracture disrupts the blood supply to the talar body, AVN develops in 20–50% of cases. Treatment is almost always surgical.
Avascular Necrosis (AVN) of the Talus
When the talar body loses its blood supply following fracture or other trauma, the bone begins to die and collapse. Patients develop progressive ankle pain, stiffness, and deformity. Treatment depends on severity — from activity modification and joint protection to ankle fusion or total ankle replacement in advanced cases.
Os Trigonum
The os trigonum is an accessory bone behind the talus present in about 7–14% of people. In most people it causes no problems. In dancers, especially those en pointe, and in athletes requiring forceful plantar flexion, it can cause posterior ankle impingement — a sharp pain at the back of the ankle with toe-pointing.
Key takeaway: Any ankle sprain that doesn’t fully recover within 6–8 weeks of appropriate treatment may harbor an osteochondral lesion of the talus. These are frequently missed after sprains because they don’t show on initial X-rays. MRI is the appropriate next step.
Symptoms of Talus Problems
- Deep ankle pain — especially with weight-bearing
- Stiffness in the ankle, particularly on hills or uneven surfaces
- Swelling around the ankle joint that doesn’t resolve fully after sprains
- Clicking, catching, or locking in the ankle (OLT signs)
- Pain at the back of the ankle with toe-pointing (os trigonum)
- Visible deformity or bruising following significant trauma
Diagnosing Talus Bone Problems
Initial evaluation includes X-rays (weight-bearing views) to identify fractures or advanced AVN changes. However, early osteochondral lesions, stress reactions, and subtle fractures require MRI or CT scanning for accurate diagnosis. We often use MRI for persistent post-sprain ankle pain and CT for surgical planning of fractures or AVN.
Treatment Approaches
- Osteochondral lesions: conservative treatment (rest, boot, physical therapy) for small lesions; arthroscopic bone marrow stimulation or cartilage transplantation for larger or persistent lesions
- Talus fractures: almost always surgical — internal fixation with screws or plates
- Early AVN: protected weight-bearing, bisphosphonates, core decompression
- Advanced AVN/arthritis: ankle fusion (arthrodesis) or total ankle replacement
- Os trigonum pain: physical therapy and injection for most cases; arthroscopic removal for persistent symptoms
Frequently Asked Questions
Is the talus the ankle bone?
The talus is one of the ankle bones — specifically, it’s the bone that connects the leg to the foot. The ankle joint itself is formed by three bones: the tibia (shinbone), fibula (outer leg bone), and talus. ‘Breaking your ankle’ can mean fracturing any of these three bones.
Why do talus fractures take so long to heal?
The talus has extremely limited blood supply compared to other bones — no muscle attachments carry blood to it, so it relies entirely on vessels entering through surrounding ligaments and bone surfaces. Fractures disrupt these vessels, leaving portions of the talus without blood flow. The bone can’t heal or may die without blood supply, which is why AVN is a frequent complication.
Can talus osteochondral lesions heal on their own?
Small, stable OLTs (grade 1–2) can sometimes heal with protected weight-bearing and time — up to 6 months of conservative treatment. Larger, unstable, or detached lesions rarely heal without surgical intervention. The cartilage surface of the talus has very limited healing capacity because cartilage has almost no blood supply of its own.
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Sources
- Mulfinger GL, Trueta J. The blood supply of the talus. J Bone Joint Surg Br. 1970.
- Stufkens SA, et al. Osteochondral lesions of the talus: current concepts. Foot Ankle Surg. 2010.
- Hawkins LG. Fractures of the neck of the talus. J Bone Joint Surg Am. 1970.
- American Orthopaedic Foot & Ankle Society. Talus Fractures. aofas.org. 2025.
When Shoes Aren’t Enough — Dr. Tom’s Top 9 Orthotics
About 30% of patients I see for foot pain need MORE than a great shoe — they need a structured insole. Below: my complete 2026 orthotic ranking with pros, cons, and the specific patient I’d give each one to.
★ DR. TOM’S COMPLETE 2026 ORTHOTIC RANKING
9 Best Prefab Orthotics by Use Case
PowerStep, Currex, Spenco, Vionic, and PowerStep Pinnacle — every orthotic I’ve fitted to thousands of patients across both Michigan offices. Each card includes pros, cons, and the specific patient I’d give it to. Real Amazon ratings, review counts, and prices below.
Best All-Purpose Orthotic for Most Patients
Semi-rigid arch shell + dual-layer cushion + deep heel cup. The orthotic I’ve fitted to more patients than any other for 15 years. APMA-accepted. Trim-to-fit design works in athletic shoes, casual shoes, and most work boots.
- The Pinnacle Full length insoles for men & women provide maximum cushioning, from high activity to moderate support. The PowerStep arch support shape provides stability to the foot and ankle, helping to relieve foot pain.
- When you spend all day on your feet, every step counts. PowerStep insoles are a podiatrist-recommended orthotic to help relieve & prevent foot pain related to athletes, runners, Plantar Fasciitis, heel spurs & other common foot, ankle & knee injuries
- The Pinnacle plantar fasciitis insoles offer superior heel cushioning and arch support. The dual-layer cushioning is designed to reduce stress and fatigue, while PowerStep premium arch support is designed for plantar fasciitis relief.
- The PowerStep Pinnacle arch support inserts for men & women can be worn in a variety of shoe types such as; athletic, walking, running, work & some casual shoes. Orthotic Inserts are ordered by shoe size, no trimming required.
- Made in the USA & backed by a 30-day money-back guarantee. PowerStep orthotic inserts for men & women are designed for shoes where the factory insole can be removed. HSA & FSA Eligible
✓ Pros
- Semi-rigid arch shell provides true biomechanical correction
- Deep heel cup centers the heel and reduces lateral instability
- Dual-layer cushion (top + bottom) lasts 9-12 months daily wear
- Available in 8 sizes for precise fit
- APMA-accepted and clinically validated
- Lower price than PowerStep Pinnacle for equivalent function
✗ Cons
- Too thick for most dress shoes (use ProTech Slim instead)
- Some break-in period required (3-7 days for arch tolerance)
- Not enough correction for severe pes planus or rigid pes cavus
Dr. Tom’s Recommendation: If a patient has run-of-the-mill plantar fasciitis, mild flat feet, or arch fatigue, this is the first orthotic I try. Better value than PowerStep Pinnacle for 90% of patients, which is why I swapped it into our clinic kits three years ago. Sub-$50 typically.
Maximum Motion Control · Flat Feet & Severe Over-Pronation
PowerStep’s most aggressive stability orthotic. Adds a 2°-7° medial heel post on top of the standard PowerStep platform — designed specifically for flat-footed patients and severe pronators who need real corrective force.
- Full Length Support - Our ProTech orthotic insoles support pronation, arch pain, heel pain, plantar fasciitis, and heel spurs.
- Your Go To Inserts - These orthotics for plantar fasciitis provide full length, total contact support for a number of common foot issues
- Easily Fix Your Arches - Standard, semi-rigid arch support that fits most shoes including, work boots, dress shoes and sneakers.
- Enhanced Comfort - Our ProTech orthotic inserts have maximum cushioning featuring ShockAbsorb Premium Foam heel support cushion to increased protection.
- Support + Comfort - PowerStep ProTech orthotic insoles are designed with built-in arch support, heel cradle, and a perfect balance of support and comfort. Legitimate PowerStep product packaging is marked with a unique US quality control code. If you are concerned that a PowerStep item is not legitimate, please contact PowerStep customer service.
✓ Pros
- 2°-7° medial heel post adds aggressive pronation control
- Same trusted PowerStep arch shell, more correction
- Built specifically for flat-foot biomechanics
- Excellent for posterior tibial tendon dysfunction (PTTD)
- Removable top cover for cleaning
✗ Cons
- Too aggressive for neutral-arch patients
- Needs longer break-in (10-14 days) due to stronger correction
- Adds 2-3 mm of stack height — won’t fit slim dress shoes
Dr. Tom’s Recommendation: When a patient comes in with significant flat feet AND symptoms (heel pain, arch pain, knee pain), the Original PowerStep isn’t aggressive enough. The Maxx is what gets prescribed. About 25% of my flat-footed patients end up here.
Low-Profile · Fits Dress Shoes & Narrow Casuals
3 mm slim profile with podiatrist-designed tri-planar arch technology. Engineered specifically to fit inside dress shoes, oxfords, loafers, and women’s flats without crowding the toe box. Vionic was founded by an Australian podiatrist.
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✓ Pros
- 3 mm slim profile (vs 7-10 mm for standard orthotics)
- Tri-planar arch technology adds support without bulk
- Built-in deep heel cup despite slim design
- Fits dress shoes WITHOUT having to remove the factory insole
- Trim-to-fit · APMA-accepted
✗ Cons
- Less arch support than full-volume orthotics
- Top cover wears faster than thicker alternatives
- Not enough correction for severe foot deformities
Dr. Tom’s Recommendation: My default when a patient says ‘I need orthotics but I have to wear dress shoes for work.’ Slim enough to fit in oxfords and pumps without the heel sliding out. The single highest-impact change you can make for office workers with foot pain.
Built-In Metatarsal Pad · Morton’s Neuroma · Ball-of-Foot Pain
Standard Pinnacle orthotic with a built-in metatarsal pad positioned proximal to the metatarsal heads — the exact location that offloads neuromas and metatarsalgia. No need for separate met pads or pad placement guesswork.
- PODIATRIST DESIGNED! An effective alternative to expensive custom-made orthotics. Innovative biomechanical THREE-ZONE COMFORT technology delivers deep heel cup stability, forefoot cushioning, and ultimate arch support to prevent excessive pronation caused by flat feet. These essential contact points help to realign positioning of feet, aiding to re-establish your body's natural alignment, from the ground up.
- VIONIC ORTHOTIC INSOLES! These women's and men's shoe inserts offer a convenient, pain-free natural healing solution for many of the common aches and pains associated with poor lower-limb alignment, plantar fasciitis, and arch pain. EVA orthotic with re-enforced, hardened plastic (PE) shell for added motion control and stability. Cushioned shock dot in the heel for added shock absorption. Can be trimmed in forefoot if necessary.
- DESIGNED FOR EVERYDAY USE! Designed to provide greater control in faster paced activities such as running and fast walking. 4 degree rear foot wedge to provide support and control which helps prevent excess pronation. Odor absorbing cover. Contoured around the heel and arch areas to achieve 100% foot contact. Podiatrist Designed, APMA Seal of Acceptance.
- COMFORTABLE TO WEAR! Shoe inserts for women and men contoured around the heel and arch areas to achieve perfect foot contact.
- SIZES AVAILABLE: XS: Women's 4.5 – 6 / Men's 3.5 – 5 S: Women's 6.5 – 8 / Men's 5.5 – 7 M: Women's 8.5 – 10 / Men's 7.5 – 9 L: Women's 10.5 – 12 / Men's 9.5 – 11 XL: Men's 11.5 – 13
✓ Pros
- Built-in met pad eliminates DIY pad placement errors
- Specifically designed for Morton’s neuroma + metatarsalgia
- Same trusted PowerStep arch + heel cup platform
- Top cover protects sensitive forefoot skin
- Faster relief than orthotics + add-on met pads
✗ Cons
- Met pad position is fixed (can’t fine-tune individual placement)
- Some patients with very small or very large feet need custom
- Slightly thicker than the standard Pinnacle
Dr. Tom’s Recommendation: If a patient has Morton’s neuroma, sesamoiditis, or generalized ball-of-foot pain (metatarsalgia), this saves a clinic visit and a prescription. The built-in pad placement is anatomically correct for 80% of feet. Way better than DIY met pads.
Adaptive Dynamic Arch · Athletic & Daily Wear
Currex’s flagship adaptive arch technology — the orthotic flexes with your gait instead of fighting it. Different stiffness zones along the length give you targeted support at the heel, midfoot, and forefoot. Available in three arch heights (low/medium/high).
- Signature waffle-inspired rubber outsole for traction and flexibility
✓ Pros
- Dynamic flex zones adapt to natural gait cycle
- Three arch heights ensure precise fit
- Lighter than rigid orthotics (no ‘heavy foot’ feel)
- Excellent for runners and athletic walkers
- European podiatric design (German engineering)
✗ Cons
- More expensive than PowerStep Original ($55-65 typically)
- Less aggressive correction than Pinnacle Maxx for severe cases
- Three arch heights means you must self-select correctly
Dr. Tom’s Recommendation: I started recommending Currex three years ago for runners who said PowerStep felt ‘too rigid.’ The dynamic flex zones respect natural gait. Best for active patients who walk 8K+ steps daily and don’t need maximum motion control.
Running-Specific · Heel Strike + Forefoot Strike Compatible
Currex’s purpose-built running orthotic. The midfoot flex zone is positioned for runner’s gait mechanics, with a flared heel cushion for heel strikers and a forefoot rocker for midfoot/forefoot strikers. Tested on 1000+ runners during product development.
- Provides continuous support of the Plantar Fascia by gently stretching the fascia tissue.
- Compression zones promote circulation, reduce impact vibration, boost recovery and strengthen feet.
- Lightweight, seamless design with extra cushioning provides support while still being comfortable.
- Supports the heel/arch and overall foot structure while stabilizing the tendon for better performance
- Made from high quality materials, the socks are moisture wicking and breathable.
✓ Pros
- Designed by German biomechanics lab specifically for runners
- Dynamic arch flexes with running gait (not static like PowerStep)
- Three arch heights (low/medium/high)
- Reduces overuse injury risk in mid-distance runners
- Lightweight (no impact on cadence)
✗ Cons
- Premium price ($60-75)
- Not aggressive enough for severe over-pronators (use Pinnacle Maxx)
- Runner-specific design = less ideal for daily walking shoes
Dr. Tom’s Recommendation: If a patient runs 20+ miles per week and has plantar fasciitis or shin splints, this is the orthotic I prescribe. The dynamic flex zones respect running biomechanics in a way that no rigid PowerStep can match. Pricier but worth it for serious runners.
Cavus Foot & High-Arch Patients
Polyurethane base with a deeper heel cup and higher arch profile than PowerStep — built for cavus (high-arched) feet that need maximum cushion and support. The 5-zone cushioning system addresses the unique pressure points of high-arch feet.
- The first generation of Protalus's M-100 Insole
- Patented Alignment Technology: The M-100 features a deep heel cup and contoured arch to correct overpronation and promote better posture, stability, and joint health throughout your body.
- Comfortable Insoles: The patented stress relief replacement shoe insoles increase comfort and relieve plantar fasciitis and anti-fatigue.
- Improves Alignment: The shoe insoles help improve alignment and reduce pain in the feet, ideal for low and high arches.
✓ Pros
- Deeper heel cup centers the heel for cavus foot stability
- Higher arch profile fills the void under high arches
- 5-zone cushioning addresses cavus foot pressure points
- Polyurethane base lasts 12+ months
- Available in Wide width
✗ Cons
- Too tall/aggressive for normal or low arches
- Won’t fit slim dress shoes
- Pricier than PowerStep Original
- Some patients find the arch height uncomfortable initially
Dr. Tom’s Recommendation: Cavus foot patients are often misdiagnosed and given low-arch orthotics — that makes everything worse. Spenco’s Total Support has the arch profile that high-arch feet actually need. About 15% of my patients have cavus feet; this is what they wear.
Cushion Layer · Standing All Day · Gel Pressure Relief
NOT a true biomechanical orthotic — this is a cushion insole. But for patients who want gel pressure relief instead of arch correction (or to add ON TOP of factory insoles in work boots), this is the best gel option on Amazon.
- ✶ALLEVIATES HEEL PAIN – Tuli’s Heavy Duty Heel Cups provide heel pain relief caused by plantar fasciitis, Sever’s disease, excessive pronation, Achilles tendonitis, etc. Ideal for those on their feet for most of the day or those looking for added comfort.
- ✶PODIATRIST PREFERRED – In an independent study conducted by M3 Global Research, podiatrists chose Tuli’s as the clear winner of recommended heel cup brands.
- ✶SHOCK-ABSORBING DESIGN – The multi-cell, multi-layer design absorbs shock and impact energy, mimicking the natural shock-absorbing system of your feet. As you walk or run, the design reduces the stress on your feet.
- ✶DOCTOR RECOMMENDED & APMA ACCEPTED – Tuli’s Heel Cups were designed by a leading podiatrist and have the honor of being accepted by the American Podiatric Medical Association.
- ✶FITS MOST LACE-UP SHOES – Best used in spacious lace-up shoes like athletic shoes / sneakers.
✓ Pros
- Genuine gel cushioning (not foam pretending to be gel)
- Targeted gel waves under heel and ball of foot
- Trim-to-fit · works in most shoe types
- Sub-$15 price (most affordable option in this list)
- Massaging texture is genuinely soothing
✗ Cons
- ZERO arch support — this is cushion only
- Won’t fix plantar fasciitis or flat-foot issues
- Compresses faster than PowerStep (4-6 months)
- Top cover wears through in high-mileage applications
Dr. Tom’s Recommendation: I recommend these to patients who tell me ‘I just want my feet to stop hurting at the end of my shift’ and who don’t have a biomechanical issue. Construction workers, factory workers, retail. Pure cushion does the job for them.
Tight-Fitting Shoes · Cycling Shoes · Hockey Skates
PowerStep Pinnacle’s slim version of their famous Green insole. The trademark stabilizer cap is preserved but the overall thickness is reduced — works in cycling shoes, hockey skates, ski boots, and other tight-fitting footwear that the standard PowerStep Pinnacle can’t fit into.
- Plantar Fasciitis Relief, Every Step – Firm arch support helps relieve heel and arch pain from plantar fasciitis and supports flat feet and overpronation for better alignment and all-day comfort.
- Clinical-Grade Biomechanics – Tread Labs 26-33 ARCHitecture delivers orthotic-level stability—custom-orthotic feel without the prescription.
- Dialed Fit for Any Shoe – Four arch heights (low, medium, high, extra-high) and an easy 3-step sizing guide make selection simple for work boots, sneakers, and everyday shoes—great for standing all day.
- Built to Last a Million Miles – Durable, recyclable arch supports with our Million-Mile Guarantee; replaceable top covers keep insoles fresh and cost-effective. Unlike foam that flattens, Pace is engineered to last.
- Trusted Expertise – Designed by Mark Paigen (founder of Chaco). Premium arch support inserts for men and women backed by decades of footwear innovation.
✓ Pros
- Stabilizer cap centers the heel (PowerStep Pinnacle’s signature feature)
- Slim profile fits tight athletic footwear
- Lasts 12+ months daily wear
- Excellent for cycling shoes specifically
- Built-in odor-control treatment
✗ Cons
- Premium price ($45-55)
- Less cushion than PowerStep equivalents
- Not as aggressive correction as Pinnacle Maxx for flat feet
- The signature ‘heel cup feel’ takes 1-2 weeks to adapt to
Dr. Tom’s Recommendation: If you’re a cyclist with foot numbness, hot spots, or knee pain — this is the orthotic. The stabilizer cap solves cycling-specific biomechanical issues that no other orthotic addresses. Worth the premium for athletes.
None of these solving your foot pain?
Some patients (about 30%) need custom-molded prescription orthotics. We make 3D-scanned custom orthotics in our Howell and Bloomfield Hills offices — specifically built for your foot mechanics.
Schedule a Custom Orthotic Fitting →FSA/HSA eligible · Most insurance accepted · (810) 206-1402
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.