Category: Artificial Leg

  • Plantar Fasciitis: How P.O.R.C Uses Footscan and PHITS 3D Insoles

    Plantar Fasciitis: How P.O.R.C Uses Footscan and PHITS 3D Insoles

    Pain under the heel during the first few steps in the morning is a common plantar fasciitis pattern. At P.O.R.C in Delhi, we combine clinical assessment, footwear review and Materialise Footscan pressure data to decide whether a personalized PHITS 3D-printed insole may form part of the care plan.

    Important: A pressure scan or insole does not diagnose or cure plantar fasciitis by itself. Heel pain can have different causes. Persistent, severe or unusual symptoms should be assessed by a doctor or qualified foot-and-ankle professional.
    Materialise 1M Footscan pressure plate used at P.O.R.C Delhi
    Dynamic foot-pressure assessment using the Materialise 1M Footscan platform at P.O.R.C.

    What is plantar fasciitis?

    The plantar fascia is a strong band of tissue that runs from the heel toward the front of the foot and helps support the arch. Plantar fasciitis describes irritation around this tissue, commonly near its attachment at the heel.

    Typical symptoms can include:

    • Pain beneath the heel or through the arch.
    • Pain that is worse with the first steps after sleep or rest.
    • Symptoms that ease after moving for a while but return after prolonged standing, walking or running.
    • Tenderness when the sole of the foot is stretched.

    Foot structure, sudden changes in activity, prolonged standing, footwear, calf tightness and the way load moves through the foot may all influence symptoms. A heel spur seen on an X-ray is not automatically the source of pain.

    Why dynamic Footscan data matters

    A static footprint shows the foot while it is still. Plantar-fasciitis symptoms, however, are often experienced while standing and walking. The Materialise Footscan plate records pressure and force as the foot contacts the ground and rolls forward.

    The software can help the clinician review:

    • Peak pressure under the heel, arch and forefoot.
    • Force across ten anatomical foot zones.
    • The centre-of-pressure path from heel contact to propulsion.
    • Medial and lateral loading during heel contact, midstance and forefoot push-off.
    • Differences between the left and right foot and between repeated steps.

    This information does not replace examination. It adds objective movement data that can be considered alongside pain location, medical history, prescription, foot shape, activity, footwear and patient tolerance.

    PHITS Dynamic 2D foot pressure scan showing plantar pressure and centre of pressure lines
    Dynamic 2D Footscan view showing plantar-pressure distribution, centre-of-pressure paths and direction of foot progression.

    How P.O.R.C plans PHITS 3D insole modifications

    PHITS orthotics are designed from dynamic Footscan measurements. The software provides correction suggestions, but the final design should be clinically reviewed. At P.O.R.C, modifications are selected for the individual rather than applying the same plantar-fasciitis template to every patient.

    1. Local heel cushioning

    When suitable, local cushioning can be added in the heel area of an EVA top cover. The PHITS design workflow specifically includes this option for plantar fasciitis, heel-spur and heel fat-pad concerns.

    2. Heel cup selection

    A standard, low or other available heel-cup configuration may be chosen according to heel position, comfort, shoe space and the clinical objective.

    3. Heel wedge or raise

    Medial-lateral loading from the scan may inform a heel-wedge decision. A heel raise is considered only when clinically appropriate, rather than added routinely for heel pain.

    4. Arch and navicular support

    Medial arch or navicular support can be adjusted. The amount must suit the patient’s measured foot shape, pressure pattern and tolerance because excessive correction may feel uncomfortable.

    5. Local stiffness changes

    Different regions of the printed base can be made relatively more or less stiff. These changes are used to influence stability and guide the foot through a more controlled roll-off pattern.

    6. Forefoot and metatarsal corrections

    If the pressure image shows a separate forefoot need, metatarsal support or a targeted forefoot correction may be considered. These are not automatically required for plantar fasciitis.

    7. Top-cover selection

    Top-cover thickness, hardness and material are chosen for cushioning, body weight, activity, sensitivity and available shoe space. Daily footwear and sports shoes may need different solutions.

    8. Shoe-specific shape

    The insole can be planned for comfort, narrow, wide or activity-specific footwear. An accurate orthotic still needs enough room inside a stable and appropriately sized shoe.

    PHITS orthotic correction report showing fascia groove and heel spur modifications
    Example PHITS+ orthotic-correction report showing fascia-groove and heel-spur relief selected from Footscan measurements and clinical review.
    PHITS 3D printed orthotic insole design based on dynamic pressure data
    PHITS corrections are built into the 3D-printed base and can be adjusted using Footscan data.

    The P.O.R.C assessment and fitting process

    History and symptom review

    We discuss where and when pain occurs, activity changes, work demands, previous treatment, diabetes or neurological history, and any doctor prescription or investigation.

    Footwear and clinical examination

    Regular shoes, sports shoes and previous insoles are reviewed. Skin condition, foot shape, available shoe space and relevant movement findings are considered.

    Repeated walking measurements

    The patient walks over the 1 metre Footscan plate for multiple usable steps. The clinician checks scan quality before interpreting pressure, timing, force zones and roll-off.

    Personalized PHITS design

    Software suggestions are reviewed and modified according to the clinical findings, symptoms, prescription, footwear and patient tolerance.

    Fitting and break-in guidance

    The completed insoles are checked inside the intended footwear. Patients receive gradual wear and monitoring guidance appropriate to their case.

    Follow-up

    Comfort, heel pressure, shoe fit and activity response are reviewed. Further clinical or footwear adjustments may be recommended when required.

    Insoles are only one part of plantar fasciitis care

    Supportive footwear and insoles may help some patients, but plantar fasciitis care commonly also includes activity modification, progressive calf and plantar-fascia stretching, load management and treatment of relevant medical or movement factors. Your doctor or physiotherapist may recommend a different plan depending on the diagnosis and severity.

    A custom insole should therefore be viewed as one tool within a broader care plan, not as a guaranteed cure.

    When should heel pain be medically reviewed?

    Seek medical advice when pain is severe, follows an injury, is getting worse, repeatedly returns, limits normal activity, or does not improve with initial self-care. Earlier review is also important with tingling or loss of sensation, marked swelling or redness, a wound or ulcer, fever, or diabetes.

    Footscan and PHITS insoles in Safdarjung Enclave, Delhi

    P.O.R.C provides Materialise Footscan assessment and PHITS custom-insole guidance for patients from Safdarjung Enclave, Green Park, Hauz Khas, AIIMS, South Extension, Saket, Vasant Kunj, Noida, Gurugram and Delhi NCR.

    • Clinic: 42 Ground Floor, Street No. 1, Krishna Nagar, Safdarjung Enclave, New Delhi – 110029
    • Phone: 9810006111
    • WhatsApp: 9811706111

    Frequently asked questions

    Can PHITS insoles cure plantar fasciitis?

    No insole can guarantee a cure. A customized insole may help manage loading, cushioning and footwear support when it is appropriate for the patient, but it should form part of a broader clinical care plan.

    Does every plantar-fasciitis patient receive the same modifications?

    No. Heel cushioning, heel cup, arch support, stiffness, wedge and forefoot choices depend on the scan, symptoms, examination, prescription, footwear and tolerance. Some patients will not need every correction.

    Do I need a prescription for a Footscan appointment?

    You may book an assessment without a prescription for general pressure and footwear review. A doctor referral is strongly preferred for severe or persistent pain, injury, neurological symptoms, diabetes, wounds, children, surgery cases or reimbursement documentation.

    What should I bring to the appointment?

    Bring your regular shoes, sports or work shoes if relevant, previous insoles, prescription, reports and a short note about when the pain occurs and which activities make it better or worse.

    Why are several walking steps recorded?

    Repeated usable steps help the clinician check whether a pressure and roll-off pattern is consistent. Incomplete or unusual foot strikes should not be used blindly for insole design.

    Clinical and technology references

  • The Complete Guide to Choosing the Right Shoes & Custom Arch Insoles for Common Foot Problems 👞👟

    PORC (Prosthetic and Orthotic Rehabilitation Clinic) has served mankind since 1988, delivering
    trusted, evidence-informed care for foot and lower-limb health. We specialize in custom orthotics and
    personalized strategies that improve comfort, alignment, and long-term mobility.
    Proper footwear supports healthy movement and helps protect your joints. Well-fitting shoes that
    match your foot structure reduce strain on the plantar fascia, tendons, and joints while improving
    stability and shock absorption. Custom arch insoles add targeted support, guide alignment, and
    distribute pressure more evenly. With the right shoe-and-insole combination, many common foot
    problems can be prevented or managed more effectively.
    Understanding Your Arch Type
    Most people fall into one of three arch types. Knowing yours helps you choose shoes and insoles that
    match how your foot loads and moves.
    Flat/low arch: often rolls inward more (overpronation), which can increase strain through the foot
    and lower limb.
    Normal arch: typically balances stability and flexibility, but still benefits from the right shoe
    structure and support.
    High arch: absorbs shock less efficiently and may concentrate pressure on the heel and
    forefoot.
    At PORC, we customize arch support to your foot structure using advanced foot scanning
    technology to guide precise insole design.
    Common Foot Problems & Solutions
    Plantar Fasciitis
    Plantar fasciitis often causes sharp or aching pain in the heel and arch, especially with the first steps
    after rest. It is commonly driven by repetitive strain, poor shock absorption, or insufficient arch
    support.
    Shoe requirements: cushioned heel, supportive arch structure, and a firm midsole to limit
    excessive bending.
    How custom insoles help: contoured arch support and a stabilizing heel cup to reduce plantar
    fascia strain and improve load distribution.Flat Feet (Pes Planus)
    Flat feet occur when the arch is low or collapses during standing and walking. This can increase
    inward rolling and contribute to fatigue or pain in the feet, ankles, or knees—especially with prolonged
    activity.
    Shoe requirements: motion-control or stability design, structured midfoot support, and a wide
    toe box.
    How custom insoles help: medial arch support and controlled posting to improve alignment
    and reduce overpronation-related stress.
    Metatarsalgia (1st & 4th Metatarsal Pain)
    Metatarsalgia is pain and inflammation in the forefoot, often under the ball of the foot and sometimes
    focused at the 1st or 4th metatarsal heads. It is commonly aggravated by tight shoes, high-impact
    activity, or increased pressure from foot mechanics.
    Shoe requirements: wide toe box, adequate forefoot cushioning, and a rocker-style sole to
    reduce push-off loading.
    How custom insoles help: strategically placed metatarsal pads and offloading features to
    redistribute pressure away from painful metatarsal heads.
    Heel Pain
    Heel pain can come from plantar fasciitis, fat-pad irritation, Achilles tendon overload, or repetitive
    impact. Identifying the source matters because support strategies differ by diagnosis.
    Shoe requirements: deep heel cup, effective cushioning, and strong shock absorption to reduce
    impact.
    How custom insoles help: heel posting, cushioning, and stabilization to improve alignment
    and reduce painful heel loading.
    Knee Osteoarthritis (OA)
    The foot and knee function as a connected chain, so foot alignment can change knee loading and
    walking mechanics. In knee OA, reducing stress on the affected knee compartment can improve
    comfort and daily function.
    Shoe requirements: stable base, supportive alignment, and cushioning to reduce impact while
    controlling motion.
    How custom insoles help: condition-specific lateral or medial wedging to redistribute load
    and support more efficient lower-limb biomechanics.
    What Makes Custom Arch Insoles Different?
    Custom arch insoles are built from precise measurements—often using 3D foot scans—to match
    your foot shape and functional needs. Unlike generic inserts, they are tuned to support specific
    structures, improve alignment, and manage pressure.
    Shell: the supportive base that controls motion and maintains shape.Accommodation layer: adds pressure relief where you need it most.
    Padding: targeted cushioning to offload sensitive areas.
    Top cover: improves comfort and wear resistance.
    Materials may include EVA, Poron, and varied densities selected to balance stability, cushioning, and
    durability for your condition and activity level.
    Key Features to Look for in Shoes
    Adequate depth and width: prevents pressure points and allows natural toe splay.
    Removable insoles: makes room for custom orthotics without crowding.
    Firm heel counter: stabilizes the rearfoot and limits unwanted motion.
    Flexible forefoot: supports efficient push-off while keeping the midfoot stable.
    Appropriate cushioning: matched to your weight, activity level, and pain pattern.
    Built-in arch structure: works with your orthotic design for consistent support.
    Quality materials and construction: maintains support and lasts longer.
    Recommended Shoes: Premium & Budget-Friendly Options
    These two models are consistently recommended across multiple conditions—including plantar
    fasciitis, flat feet, metatarsalgia, heel pain, and knee osteoarthritis—because they combine reliable
    support with comfort-focused design. The picks below reflect patterns seen in 2026 clinical sources
    and expert reviews, especially around stability, cushioning, and load management.
    Feature Premium Option Option
    Model New Balance 990v6 Hoka Bondi 8
    Key Features High stability with excellent
    arch structure, deep heel
    counter for heel pain, proven
    support for plantar fasciitis
    and knee pain
    Maximum cushioning with
    rocker sole that reduces
    forefoot load (ideal for
    metatarsalgia), strong
    clinical support for plantar
    fasciitis relief
    Best For Plantar fasciitis, flat feet, heel
    pain, knee OA
    Plantar fasciitis,
    metatarsalgia, heel pain,
    general foot pain
    Price Range ₹15,000–₹20,000 ₹8,000–₹12,000
    The PORC Approach: Advanced Foot Assessment
    At PORC, we use advanced foot scanning to build accurate 3D models of your feet and capture key
    structural details. We assess biomechanics and analyze pressure distribution to see how you load
    your feet during standing and walking. We use this data to design custom insoles matched to yourcondition, footwear, and functional goals—so you get a precise, patient-specific solution that supports
    comfort, alignment, and long-term outcomes.
    When to Replace Your Insoles
    Plan to review and typically replace custom insoles every 12–18 months, depending on use, activity
    level, and materials. Replace sooner if you see visible wear, loss of shape, reduced support, or
    returning symptoms.
    If you have persistent foot, heel, or knee discomfort, get assessed early to prevent problems
    from escalating. Visit PORC for a comprehensive evaluation, custom insole fabrication, and
    clear guidance on shoes that properly fit your orthotics and support your biomechanics.
    Serving mankind since 1988, we focus on practical, patient-centered solutions that fit real life.
    Book your assessment today to move more comfortably and confidently.
    PORC – Serving Mankind Since 1988

  • Finding Advanced Prosthetics or Artificial Leg Locally: Pneumatic vs. Hydraulic Knee Joints for Bilateral, Heavy-Build Patients

    Finding Advanced Prosthetics or Artificial Leg Locally: Pneumatic vs. Hydraulic Knee Joints for Bilateral, Heavy-Build Patients


    For individuals adjusting to life as a bilateral (B/L) transfemoral (above-knee) amputee, selecting the right prosthetic or artificial leg componentry is one of the most critical decisions in the rehabilitation journey. When a patient also presents with a heavier build or high body mass index (BMI), the mechanical demands placed on the prosthetic joints multiply exponentially.


    Unlike unilateral amputees, who can rely on a sound biological limb to correct stumbles, absorb shock, and control descent, a bilateral amputee relies entirely on the synchronized performance of two mechanical joints.


    If you or a loved one are looking for advanced mobility solutions close to home, understanding the core component engineering is essential.

    In this guide, we compare the two primary types of fluid-controlled knee joints available through local O&P specialists—Pneumatic (such as the Blatchford OP4 and Össur Oph3) and Hydraulic (such as the College Park Capital Knee)—specifically through the lens of a bilateral, heavy-build user.


    1. The Physics: Compressible Air vs. Incompressible Fluid


    The fundamental difference between these two technologies lies in the medium used to control the knee during walking.


    Pneumatic Knees : These systems utilize compressed air. Air is highly compressible, meaning it yields easily under initial pressure and behaves much like an adjustable spring (P_1V_1 = P_2V_2). This creates a “lively” and energetic swing phase that requires very little effort from the amputee’s residual limbs.


    Hydraulic Knees (Capital Knee): These systems utilize silicone- or petroleum-based oils. Because liquids are incompressible, hydraulics generate resistance by forcing fluid through tiny internal valves (F \propto v^2). This resistance scales automatically with speed: the harder and faster you push, the more firmly the fluid resists.


    2. Weight Capacity & Structural Integrity
    For a heavy-build patient, structural safety margins are non-negotiable. Exceeding a knee joint’s weight rating can lead to structural fatigue, catastrophic seal failure, or sudden mechanical collapse.


    Pneumatics (OP4 / Oph3): Most standard pneumatic knees are structurally rated for a maximum patient weight of 100 kg (220 lbs). For a bilateral patient with a heavy build, this provides almost no safety overhead.


    The Capital Hydraulic Knee: Engineered with a reinforced aerospace-grade aluminum chassis, the Capital Knee boasts a maximum weight capacity of 150 kg (330 lbs). This provides a crucial 50% structural safety cushion for heavier users.


    3. Stance Stability & Stumble Recovery
    What happens when a bilateral patient trips or steps incorrectly? Without a biological limb to step forward and break the fall, the mechanical knee must instantly absorb the patient’s entire falling body weight.


    The Pneumatic Friction Brake (OP4/Oph3)
    Pneumatic knees typically rely on a weight-activated friction brake for stance stability. When weight is applied through the heel, a mechanical brake engages to lock the knee straight.
    The Catch: The knee must be nearly fully extended (straight) for the brake to lock. If a heavy-build user trips and the knee flexes past a certain point, the mechanical brake cannot engage, significantly increasing the risk of a fall.


    The Hydraulic Yielding Circuit (Capital Knee)
    Hydraulic knees feature a dedicated stance-yielding valve. If the knee begins to buckle unexpectedly during a trip, the incompressible fluid locks down the micro-orifices, creating immense resistance to sudden flexion.


    The Benefit: Instead of snapping shut or buckling completely, the knee “yields” under the patient’s heavy mass, slowly lowering them safely or giving them the critical fractions of a second needed to recover their balance.


    4. Slope and Stair Descent
    Descending ramps, hills, or stairs is a major obstacle for bilateral amputees.
    Because pneumatic knees operate on a binary “locked or unlocked” principle, descending a slope usually requires the bilateral user to keep the knees completely locked straight and awkwardly hand-rail slide or step-to down the incline.


    Hydraulics allow for eccentric yielding. A heavy-build user can actively ride the fluid resistance of the Capital Knee. By applying continuous weight, the fluid slowly bypasses the internal valves, allowing the user to walk down ramps and step over step down stairs with a smooth, controlled, and natural deceleration pattern.

    The Verdict: Which Knee is Best for a Bilateral, Heavy-Build User?

    ​While pneumatic knees like the OP4 and Oph3 are exceptionally well-engineered, lightweight choices for single-speed, lighter-weight unilateral walkers, they fall short under the extreme structural and safety demands of a bilateral, heavy-build patient.

    ​For this specific user profile, the College Park Capital Hydraulic Knee is highly recommended. The combined advantages of a 150 kg weight limit, fluid-driven stumble recovery, controlled slope descent, and complete waterproofing provide the heavy-build bilateral amputee with the structural safety margin and robust stability required to confidently regain their independence.

    Looking for Custom Prosthetic Fittings in Safdarjung Enclave New Delhi?

    Choosing a prosthetic knee is a collaborative process between you, your physical therapist, and your prosthetist. At , we specialize in high-weight capacity component selection and custom fittings for bilateral amputees right here in PORC Prosthetic  and  Orthotic  Rehabilitation  Clinic, Safdarjung  Enclave, New Delhi .

    ​Whether you want to try the dynamic adaptation of the Capital Hydraulic Knee or explore other K3/K4 mobility options, our local team is here to guide your rehabilitation journey.

    [Call our  PORC Prosthetic  and  Orthotic  Rehabilitation  Clinic, Safdarjung  Enclave, New Delhi office today at 9810006111 9811706111 to speak with a certified prosthetist.