At Prosthetic Orthotic Solutions International, we know how important it is for a person with a trans-femoral level amputation to stay mobile, active, and independent. A microprocessor knee is a piece of technology that can make a big difference in your life. It is designed with a computer inside with different parameters that can be set up to adjust to the cadence of your walking and help you walk more easily. Your walking will also look and feel more fluid and natural too. 

This article will explain why a microprocessor knee is a great choice with benefits like increased safety and confidence. Let’s dive into what makes these prosthetic knees so special. 

Safer Walking with Stumble Recovery 

One of the best things about a microprocessor knee compared to basic mechanical knees is how it increases safety during stance and ambulation. These knees have different sensors and gyroscopes that detect changes in your walking speed as well as ramping up resistance when it thinks you are falling. If it detects you are about to trip or fall, the knee quickly increases the resistance of the knee bending to help you catch yourself. 

This stumble recovery feature lowers the chance of falling which can be a big confidence booster when walking utilizing a prosthetic knee. With a computerized knee, you can walk with less worry that the knee is going to buckle underneath you, and can engage more in the environment around you. The microprocessor knee adjusts to keep you more stable, so you don’t have to think about every step. 

Less Effort, More Comfort 

Walking with a traditional mechanical knee can be tiring. You have to use more energy to keep your balance and focus forward. A microprocessor knee changes that. Studies show a decrease in energy expenditure with use of an MPK compared to a basic mechanical knee. This means you can stay active longer without feeling worn out. 

Customized for You 

Everyone’s needs are different, and Prosthetic Orthotic Solutions International understands that. We are well versed and certified in the different microprocessor knees available for use on the market today from all the different prosthetic manufacturers. While we may direct you to a specific knee we might think would work best for you and your activities, we have loaner microprocessor knees available in house for you to trial. 

While many of the prosthetic knees use similar technology, they all work a little differently and might have features that differentiate them, one knee to another. Some of the MPKs have different modes that can be customized based on personal specific activities like cycling or golfing. Testing out the different MPKs available allows you to be part of the decision making process when getting a new prosthesis. This personalized approach makes sure you knee works the way you want it to, helping you reach your mobility and activity goals. It’s a prosthesis designed specifically for you and your life. 

Why Trust POSI? 

At Prosthetic Orthotic Solutions International, we are committed to helping you move and live better. While microprocessor controlled prosthetic knees are some of the latest and greatest technology, the socket fit (the part of the prosthesis your limb fits into) is the most important piece of the entire prosthesis. If your socket doesn’t fit correctly, it doesn’t matter what kind of components you have. Here’s what sets us apart: 

• Customized sockets not made from measurements or templates 
• Skilled and certified prosthetists to support you every step of the way
• Experience with top-quality technology 

We believe that a microprocessor knee can open up new possibilities for you. Our team is here to guide you through the process, from choosing the right knee to learning how to use it. We work closely in conjunction with highly skilled and experienced physical therapists together to progress you through your rehabilitation journey. With POSI, you’re not just getting a prosthesis, you’re getting a lifelong family in your journey to better mobility. 

Take the Next Step

A microprocessor knee can give you the freedom to move with confidence and ease. If you’re ready to see how it can change your life, POSI is here to help. Schedule a no cost consultation with our team to learn more about our advanced prosthetic knees and find the perfect fit for you. Don’t wait to start living life to the fullest! 

At Prosthetic Orthotic Solutions International (POSI), we believe that losing a limb doesn’t mean losing your potential. Prosthetic limbs have evolved dramatically, offering individuals the chance to reclaim mobility, independence, and confidence. Whether due to injury, illness, or a congenital condition, POSI’s team has years of experience in fitting all levels of prosthetic devices..

Understanding the various types of prosthetic limbs available today is the first step toward finding the right fit for your lifestyle. Let’s dive into the world of prosthetics, explore the options, and see how POSI can guide you on this journey.

What Are Prosthetic Limbs?

Prosthetic limbs are artificial devices designed to replace missing arms, legs, hands, or feet. Far more than just replacements, they’re tools that restore function, enhance appearance, and adapt to individual needs. From basic designs to cutting-edge technology, these devices cater to a wide range of goals—whether that’s walking to the mailbox, running a marathon, or playing an instrument. At POSI, our mission is to match each person with a prosthetic that aligns with their daily activities, physical abilities, and aspirations.

Prosthetics falls into two categories, Upper Extremity and Lower Extremity. Within these, there are specific types based on the level of amputation and desired functionality. Here is the breakdown.

Upper Extremity Prosthetics

An upper extremity prosthesis is an artificial device designed to replace the missing function of the anatomy after physical loss or amputation. These devices can focus on restoring visual symmetry, along with grasp and item stability through restored movements. The types of upper extremity prosthetic designs range from digits up to the shoulder level.  The interface with the skin is commonly called a socket and is important to be properly fitting to maintain comfort and provide bio mechanical control. The socket design will play a large role in “suspending” or keeping the prosthesis on during use. Below are the common types and considerations.

• Finger and Partial Hand Prosthetics

These are designed for individuals that may have a single, or multiple missing digits. It is not uncommon to have additional areas of the hand injured or affected as well that needs to be evaluated.  The options for finger and hand prosthetics can include custom made silicone restorations, these do serve light functional needs with more of a bias to visual symmetry. For increased strength requirements, such as vocational demands, there are mechanical designs ranging from passive to myo-electric to replicate the grasp of fingers for item stability. Here at POSI, we have a team that is experienced in providing you with an education of your options, as well as, state of the art in-house fabrication for your needs. Once your prosthesis has been provided, therapy training will be of utmost importance to get and learn the most value from your prosthesis.

• Trans-radial Prosthetics

This level of prosthetic design is designated for individuals with limb loss through the forearm with the elbow remaining. The socket designs for this level must take into account the presentation of the remaining limb, the range of motion, and intended use of the prosthesis. Prosthetic hands and hooks are considered to be “terminal devices”. These devices can be of simple aesthetic nature that are lightweight, or more technologically advanced microprocessor designs. These designs are commonly referred to as “body powered” and “myo-electric”.   The prosthetic design that is “best” is the one that is comfortable and provides the functional requirements to support your independent living such as meal preparation and dressing.  This will look different for each individual and their lifestyle to regain independence.  The underlying foundation is that the prosthesis needs to fit properly for best comfort and control regardless of the design criteria. Once your prosthesis has been provided therapy training will be of utmost importance to get and learn the most value from your prosthesis.

• Trans-humeral Prosthesis

This level of prosthetic design is designated for individuals with limb loss above the elbow.  The prosthetic design at this level will typically require a mechanical elbow that might be a passive, body powered, or myo-electric design. Its primary function is to allow for best hand positioning for assistance of the other hand. The design and selected components need careful consideration to ensure the maximum value of functional return. Passive system will typically be of the least weight while providing body symmetry to support clothing and provide light opposition. A body powered system can still be relatively lightweight while providing an increase in functions when compared to passive designs. These are robust and durable for a wide variety of environments.  A myo-electric prosthesis can provide a larger list of functions that will closely replicate the human arm and hand with a bit more weight and sophistication to be considered.  The best design will be the one that can provide the comfort and functions to restore your independent living.  Once your prosthesis has been provided therapy training will be of utmost importance to get and learn the most value from your prosthesis.

Types of Prosthetic limbs- Upper Extremity

• Passive Prosthetics

Passive limb prostheses prioritize aesthetics over movement, they’re lightweight, and can help with self confidence while out in the community. POSI offers custom cosmetic finishes to match your skin tone and style.

• Body-Powered Prosthetics

Body powered prostheses use your own muscle power, often via cables and harnesses to operate. They are durable, low-maintenance, and give you direct control. 

• Myoelectric Prosthetics

Myo-electric limbs use sensors to detect muscle signals, translating them into actions like grasping or bending, they offer precision and strength.  

Types of Prosthetic Limbs- Lower Extremity

Lower limb prosthetics focus on mobility and stability, they are engineered so an individual will have the confidence to walk and get back to their pre-amputation quality of life. Below are the common types and considerations.

• Transtibial Prosthetics

This level of prosthesis is designed for individuals with an amputation below the knee. The prosthesis consists of a prosthetic liner for the suspension, socket and prosthetic foot.  There are different methods of suspension (this is how the prosthetic socket stays on) and different types of prosthetic feet. Many factors are taken into consideration, when the prosthetist and individual work together to determine the best components for each individual. POSI manufactures transtibial prosthetics in house with durable materials and components, ensuring users can walk comfortably and confidently.  

• Transfemoral Prosthetics

A transfemoral prosthetic is for one with an amputation above the knee. The prosthesis consists of a prosthetic liner or direct contact for the suspension, a socket, a prosthetic knee and foot. The type of suspension (this is how the prosthetic socket stays on), and the prosthetic knee and foot will vary from individual to individual.  The prosthetist and individual together will determine which suspension, knee and foot will be best for them. At POSI, we offer our patients the opportunity to try different feet and knees so the prosthetic is custom to each individual’s needs and activity level.

Why Customization Matters

No two people are alike, and neither are their prosthetics, that is why at POSI we hand cast for all prosthetic sockets to be sure the residual limb is captured appropriately for an intimate fit. We consider the amputation level, lifestyle and activity goals to help manufacture the best prosthesis for an individual. The prosthesis is then manufactured in house so fine details and adjustments can always be completed during an appointment. A properly fitting customized prosthetic socket will lead to a successful prosthetic wearer and allow one to get back to living life.

POSI’s Role in Your Prosthetic Journey

The prosthetic journey can be scary and confusing, POSI is here to help one understand the process from start to finish.  We feel strongly that each individual should receive a prosthetic education, this is a time for the prosthetists to share information, answer questions and put together a “road map” of what the prosthetic process will look like for each individual.

Whether you are a new amputee looking for answers or a seasoned amputee looking for a better fit, and ready to explore your options? Contact POSI today 

Understanding Pediatric Prosthetics

When your child needs a prosthetic limb, the news can hit like a wave. Maybe it’s a congenital limb difference, an unexpected injury, or a medical condition that’s led you here. Whatever the reason, stepping into the world of pediatric prosthetics feels big—because it is. But it’s also a journey where your child can grow, play, and thrive.

At Prosthetic Orthotic Solutions International (POSI), we’ve guided countless families through this journey, and we’re here to walk you through it too. Here’s your guide as a parent. It covers everything from the first fitting to keeping the device and handling emotions.

The Fitting Process: Building Pediatric Prosthetics That Fit Their Life

Getting a prosthesis for your child isn’t like picking out a pair of shoes. It’s a tailored process that starts with who they are.

At POSI, we kick things off with a conversation—not just with you, but with your child too, if they’re old enough. What do they love? Are they zooming around on a tricycle, mastering cartwheels, or obsessed with finger painting?

These aren’t just cute details; they shape the design of the child prosthetic. A kid who’s all about sports might need something more simple and lightweight.

The physical part comes next. We take an impression of your child’s residual limb—think of it like a mold. This is just a quick plaster cast, it’s fast, painless and a bit messy. 

This mold becomes the blueprint for a diagnostic socket for fitting purposes—a trial run of the prosthesis. This lets us adjust the socket (the part that hugs the limb) for a fit that’s snug but not uncomfortable.

Because children grow like weeds, pediatric prosthetics need to keep up. We might build in adjustable features or plan for a series of fittings over time. For a toddler, that could mean a new prosthetic every six months; for an older kid, maybe yearly.

The goal? A device that feels like part of them, not a burden. By the end, your child walks (or runs) away with a prosthetic that’s as unique as they are.

Maintaining a Child Prosthesis: Keeping Up with Their Energy

Kids don’t sit still, and their pediatric prosthetics take the brunt of it. A child prosthesis isn’t a museum piece—it’s a tool for living, and that means it’ll see some action.

Maintenance starts at home with simple habits. Every day, clean the liners with mild soap and water to keep sweat and bacteria at bay.

Check your child’s skin too—redness or irritation can signal a fit issue, especially after a growth spurt. We’ll show you how to spot trouble and handle small fixes.

But it’s not all on you. Regular visits to POSI keep the prosthetic in top shape. Kids’ bodies change fast—bones lengthen, muscles shift—and a socket that fit perfectly last summer might pinch by fall. We typically see families every 3-6 months for adjustments, depending on age and growth.

Then there’s wear and tear. A prosthetic foot might scuff from skateboarding, or a hand component might clog with sandbox grit.

Our clinicians can swap parts, tweak alignments, or even rebuild sections as needed. We’ve got the tools and the experience, honed from years of working with patients of all ages.

Think of it like maintaining a car: a little oil here, a tire swap there, and it’s ready for the road. We also encourage kids to speak up—if something feels off, they’ll often notice before anyone else. Teaching them to care for their prosthetic builds independence and ownership.

The Emotional Side: The Heart Behind the Hardware

Pediatric prosthetics aren’t just about mechanics—they’re about your child’s spirit and your family’s journey. The first time you see that socket slide on, you might feel a flood of emotions: relief, worry, hope, maybe even a pang of sadness. That’s normal. Parents often ask, “Will they be okay? Will they feel different?”

Here’s what we’ve learned from years at POSI: kids are tougher than we give them credit for. With the right child prosthesis and a little support, they don’t just get by—they soar.

Others need time. They might ask why they need it or shy away from questions at the playground. Listen to them. Let them lead.

We’ve seen kids personalize their prosthetics—picking colors, adding stickers, even naming them—which turns a medical device into something uniquely theirs. Our team helps with that, offering options like silicone covers for a lifelike look or lightweight designs for comfort.

For you, the parent, it’s a balancing act. You’re their cheerleader, their advocate, and sometimes their shoulder to cry on.

It’s okay to feel that rollercoaster. Connecting with others helps—whether it’s a support group, a chat with another POSI family, or just swapping stories with our staff. You’re not alone in this, and neither is your child.

There’s beauty in the small wins, too. The first time they tie a shoe with their prosthetic hand. The day they race a friend and win.

Our team works with kids to build confidence—practicing steps, grips, or whatever goal they set. We’ve watched shy kids turn into chatterboxes once they master their device. That’s the human side of pediatric prosthetics: it’s less about replacing something lost and more about unlocking what’s possible.

A Path Forward Together

Raising a child with a prosthetic limb is a journey of practical steps and big feelings. At POSI, we’re here for all of it—fitting a child prosthesis that moves with them, keeping it ready for their adventures, and supporting the emotional highs and lows. Your child’s story doesn’t stop at the prosthesis; it starts there. They’ll climb, create, and surprise you, and we’ll be in your corner every step of the way.

Got questions? Want to see how pediatric prosthetics can fit into your family’s life? Reach out to us at Prosthetic Orthotic Solutions International. Let’s take that first step together.

For many amputees, phantom pain is an unexpected and challenging experience. Despite the limb being gone, the brain continues to send signals, leading to sensations of pain or discomfort where the limb used to be. Phantom pain is common among amputees, with up to 80% experiencing some form of it. Fortunately, with advancements in both prosthetic technology and medical procedures, like Targeted Muscle Reinnervation (TMR), there are new ways to address and manage the situation. At POSI, we are committed to providing custom-fitted prosthetics that not only improve mobility but can also help alleviate phantom pain.

What Is Phantom Pain?

Phantom pain refers to the sensation of pain in a limb that has been amputated. Despite the absence of the limb, the brain and nervous system still send pain signals to the area where the limb once was. These sensations can vary from mild tingling to sharp, severe pain, and they often fluctuate in intensity. It is believed this occurs due to a miscommunication between the brain and the body, with the brain perceiving that the missing limb is still there.

What are the causes?

The exact cause isn’t entirely understood, but it’s thought to involve a mix of physical and neurological factors. Nerve endings at the amputation site can send abnormal signals to the brain, which then interprets these signals as pain. Psychological factors, such as stress or anxiety, can also exacerbate phantom pain. While it can be unpredictable, many patients find that it’s triggered by certain movements, stress, or changes in weather.

How Prosthetics and Phantom Pain Are Connected

There is a complex relationship between prosthetic limbs and this type of pain. Some amputees experience reduced phantom pain when they use a prosthetic limb, as the brain receives sensory feedback from the device, which can help correct the miscommunication that leads to phantom pain. However, a poorly fitted prosthesis can worsen the situation by causing additional discomfort or irritation at the amputation site.

At POSI, we focus on creating custom prosthetic devices tailored to the unique needs of each individual. Proper fit and comfort are essential not only for mobility but also for reducing the discomfort that can contribute to phantom pain. Our advanced prosthetics are designed with cutting-edge technology to ensure optimal performance, reducing the likelihood of irritation and, in turn, minimizing any type of pain.

How Prosthetic Orthotic Solutions International Helps with Phantom Pain Management

At POSI, we understand that managing phantom pain is as important as restoring mobility. That’s why we place a strong emphasis on creating custom prosthetics that provide both comfort and functionality. Through personalized fittings and follow-up consultations, we ensure that your prosthesis fits your body perfectly, which can significantly reduce discomfort and help alleviate any issues.

We’ve seen numerous success stories where our clients have experienced a noticeable reduction in phantom pain after receiving a custom prosthesis. By prioritizing comfort, adjusting for pressure points, and using the latest innovations in prosthetic technology, we aim to help our clients live pain-free, active lives.

Targeted Muscle Reinnervation (TMR)

One of the more recent advancements is Targeted Muscle Reinnervation (TMR). TMR is a surgical procedure where the nerves that used to control the amputated limb are redirected to remaining muscles in the body. This procedure can help reduce phantom pain by giving those nerves a new function, which can decrease the abnormal nerve signals that contribute to phantom sensations.

While TMR is not a solution for everyone, many patients who have undergone the procedure report significant reductions in their phantom pain. Combined with a well-fitted prosthetic device from POSI, TMR offers a comprehensive approach to managing both physical and neurological aspects of phantom pain.

Additional Treatment Options for Phantom Pain

In addition to prosthetic solutions and TMR, there are several other ways to manage phantom pain:

• Mirror Therapy: This technique involves using a mirror to trick the brain into seeing the missing limb as present, which can help reduce pain sensations.
• Medications: Some patients find relief from medications, including pain relievers, antidepressants, or anticonvulsants.
• Physical Therapy: Gentle physical exercises and massages can help alleviate discomfort in the residual limb.
• Mental Relaxation Techniques: Stress reduction strategies, such as mindfulness or cognitive-behavioral therapy, may also be effective in managing pain.

It’s important to work with your healthcare provider to determine which combination of treatments is best for your unique situation.

The Future of Prosthetics and Pain Management

The future holds great promise for both prosthetics and phantom pain management. Researchers are working on advanced prosthetic devices that incorporate sensory feedback systems, allowing users to feel more natural sensations in their prosthetic limbs. This type of innovation could further reduce the likelihood of phantom pain by providing the brain with real-time sensory input.

At Prosthetic Orthotic Solutions International, we continue to stay at the forefront of these advancements, ensuring that we provide our clients with the most effective prosthetic solutions available. Our goal is to help amputees not only regain mobility but also live without discomfort.

Conclusion

Phantom pain can be a debilitating condition for amputees, but with the right tools and treatment options, it doesn’t have to be. At Prosthetic Orthotic Solutions International, we specialize in custom prosthetic devices that help reduce the physical discomfort while enhancing your quality of life. Through the combination of custom prosthetics and emerging procedures like TMR, we offer a comprehensive approach to phantom pain management.

If you or someone you know is struggling with phantom pain, contact POSI today to learn how our custom prosthetics and personalized care can make a difference.

I knew of POSI because Yuke Kee came to visit me while I was in Kessler for rehab, she sat and talked to me, answered all my questions and made me feel comfortable, but there were insurance issues and I could not go to POSI.  I started being fit for my first prosthesis in early December of 2021 with another company.  The process was slow, I had to wait weeks before I got my final prosthesis.  From the start, it never fit well, they made eight sockets and not one was comfortable, but being a new amputee, I did not know what to expect.

In Feb 2023 I got new insurance and POSI was now an option, which I jumped at.  When I went to POSI the feel was totally different than the other company. Yuke Kee talked to me for a while asking questions to understand my needs and she listened to me.  She used tools that I did not see with the first prosthetic company and the way she molded me for my prosthesis, hand casting, was different too.  At every appointment, Yuke Kee would walk me thru what she was doing and why, this was important because it helped me understand what I should be on the lookout for in the feel of the prosthesis.

In my eyes, this is no other place like POSI.  On your initial call to POSI, Miss Pam, makes you feel welcome, she is friendly, helpful and personable, and in my eyes goes above and beyond to help you in any way. That right there is Triple A plus service, they are very lucky to have her. Yuke Kee, I cannot say enough about her, she is simply marvelous at what she does in every way, ask and she will answer and she gets back to you with any issue you may have.  Shuo is great, he is quiet but watches and then does his thing and is very helpful.  Kevin Towers is also very good and helpful. While I was struggling in rehab with my prosthesis from the other company, he came to the rehab and professionally explained what was wrong with my prosthesis. 

At POSI, they believe in teamwork from the front to the back, my slogan for them, “teamwork makes the dream work”.  You get all of this wonderful service and most importantly a great prosthesis that is comfortable and allows you to get back to living your life.

I’ve waited for 6 years to have the opportunity to afford a proper prosthesis to fulfill all my needs and to achieve all my goals and dreams, my plan was to go to the US to get a prosthesis.  I did some research with my cousin through internet, we find a couple of clinics but felt that POSI was the right one for me, and I thank God that I got decided for them. They’re the best of the best hands down.

Working with them was a game changer for me, I trusted them since day one, and they did and awesome job with my socket fit and my knee was properly adjusted for my needs.

I got a lot of self-confidence, I trust in my knee a 100%… something that I never felt before since I lost my leg. Now I know that I can do whatever I want without hesitation, have long walks, ride a bike, lift heavy weights, get back to cooking and a lot more.

Marvin A

The combination of a highly experienced staff, an onsite lab and located near my rehab center made the whole experience easier to manage and helped expedite my recovery.

I consider this a journey and feel grateful that I have met such a wonderful and experienced team at POSI.

Featured Patient Stories

Prosthetic Fitting: Above Knee Prosthesis

Patient Story:

“In 2018 I had an arthroscopic knee surgery and developed a post-op fungal infection. Doctors tried a total knee replacement to remove the infected destroyed bone, it didn’t work, I had increased pain and decreased mobility after the surgery.  I opted for an above knee amputation in February 2019.

I struggled for 2 years with a prosthetic company that was not able to get the fit right. I began to question their expertise as I could not get back to doing things I use to do, also I was in a test socket for over 3 months which I have since learned is not at all safe for an above knee amputee.

One day at PT it was suggested I talk with a peer mentor with the same level of amputation, the peer mentor Rob suggested I give POSI a try as he thought I should be able to get back to weight lifting and exercising without a problem.  I was skeptical about changing companies, but I thought, what do I have to lose. It was the best decision I have made since my amputation.

Within 4 quick visits I was fit with a socket that was comfortable, did not cause pain and allowed me to get back to the lifestyle I was so missing.  The properly fitting socket made me realize the Ossur Rheo knee was a good fit for me, it was the poorly fitting socket that made my leg feel heavy not the knee.

My advice, you need to be your own advocate, not every practitioner is the same, and “nice” is not the same as “knowledgeable”.  Do your research, if you feel something is not right don’t be afraid to make a change.

POSI has been awesome and I am so thankful I made the change.”

– G Weiss

“Within 4 quick visits I was fit with a socket that was comfortable, did not cause pain and allowed me to”

– Gary Weiss

Featured Patient Stories

Prosthetic Fitting: Below Knee Prosthesis with Pin Locking Ossur Liner Suspension

Question & Answer:

Q: What can you share about your experience of getting fitted with a prosthesis?
A: POSI was able to do the right thing the 1st time, the socket POSI made me corrected all the problems I had with the prosthesis from the other company.

Q: Have you been fit with a prosthetic before? Was it with POSI? If not, how was the experience different?
A: I was fitted with a prosthesis from another company, they tried fitting me with several sockets but they all were useless.

Q: From start to finish, who was your favorite staff member from POSI? Why? What did they do to help you out?
A: I can’t say I have a favorite as everyone has been awesome.

Q: What is some advice you would give to others looking to get fitted with a prosthesis?
A: POSI is the way to go, professional, great attitudes and very friendly.

Q: Is there anything else you would like to share about your experience with POSI?
A: I wish I started with POSI first instead of wasting a year and a half with the other company.

“POSI is the way to go, professional, great attitudes and very friendly.”

– Jeff C