Showing posts with label Technology and Research. Show all posts
Showing posts with label Technology and Research. Show all posts

Tuesday, March 2, 2021

Yale and Your Stem Cells

"Yale Scientists Repair Injured Spinal Cord Using Patients' Own Stem Cells." 

I'm not linking to this headline just because it has to do with a discovery made by my alma mater — even though it does.  The article is remarkable for other reasons.  Here's why.

Everyone has stem cells.  What if yours had the ability to help you recover from a life-changing injury?  There may be good news.  It looks as if they just might.  In this study of autologous stem cell use to treat spinal cord injuries, over half of the participants had "substantial improvements in key functions" shortly after having injections of their own bone marrow derived stem cells (MSCs).  The key functions that were improved include walking and using their hands.  Those are huge improvements.  Just as encouraging is the report of "[n]o substantial side effects."

Take a closer look at the numbers and the ASIA designations of participants.  Here's a breakdown of the study results, as available on ScienceDirect.  Thirteen people took part in the study.  Six were classified as ASIA A (complete); three of them improved to ASIA B (sensory incomplete) and two of them improved to ASIA C (motor incomplete).  Two of the thirteen participants were ASIA B.  One of them improved to ASIA C and the other to ASIA D (motor incomplete).  Five of the participants were ASIA C.  All five of them improved to ASIA D by the day after the infusion.  Overall, of the thirteen people in the study, twelve of them had improvements.  Six months after the infusion, functional improvements remained.

It's not a perfect trial.  Researchers caution that the study was unblinded and had no placebo controls.  Nevertheless, the promise is impressive: if you have a spinal cord injury, your own stem cells can bring significant improvement in important motor function.  Possibly within weeks, or even a day.

 

Monday, November 30, 2020

Exoskeletons Improve Mobility (A Recent Study and A Future Outlook)

Exciting research!  This study set out to learn how many exoskeleton training sessions are necessary to help users "gain adequate exoskeletal assisted walking skills and attain velocity milestones."

Researchers offered participants the opportunity to use the Ekso GT and ReWalk.  Even 12 sessions made a positive difference for about two-thirds of the participants.  After 36 sessions, over 80% of everyone in the study had met the goals originally set by the researchers. 

Importantly, the study again indicates that exoskeletons can improve users' mobility overall.

According to Dr. Gail Forrest of Kessler Foundation:

"Participants showed improvement regardless of level of injury, completeness, or duration of injury . . . indicating that exoskeletons can be used to improve mobility across a broad spectrum of individuals with neurological deficits caused by spinal cord injury."

The United Spinal Association has a free resource with information about several exoskeleton types and availability for users with SCIs.  A 2020 article on The Spinal Cord Injury Zone discusses some of the exoskeletons' designs, limitations, and possible benefits.

From another perspective, outside of the world of spinal cord injuries, exoskeletons may be set to transform life for virtually everyone.  Several of those who have founded related start-ups estimate that the technology will be "commonplace" in ten years.  That's an impressive footprint — literally.

Wednesday, October 14, 2020

Success with Carbon Nanotubes, 2020

 What is a carbon nanotube, and what does it matter?

As explained by How Stuff Works, "A carbon nanotube is a nano-size cylinder of carbon atoms. Imagine a sheet of carbon atoms, which would look like a sheet of hexagons. If you roll that sheet into a tube, you'd have a carbon nanotube. . . . With the right arrangement of atoms, you can create a carbon nanotube that's hundreds of times stronger than steel, but six times lighter."

In 2009, Discover Magazine published an article called "9 Ways Carbon Nanotubes Just Might Rock the World."  The subtitle hinted at some of the nine ways, reading, "Nanotubes have been billed as the key to curing cancer, building space elevators, and creating real-world Spidermen. Whether they're totally tubular or just an overhyped pipe dream remains to be seen."

Fast forward eleven years and you can find articles on a use that isn't mentioned in the Discover piece, but has its own potential to "rock the world."  Although it isn't the first time carbon nanotubes have been studied in relation to spinal cord injury, a recent study in Italy focused on using carbon nanotubes as scaffolds to support nerve growth in a living mammal with a partially-severed spinal cord — not in cell cultures, as done previously. 

By inserting an implant that is "a kind of sponge of carbon nanotubes comprising interwoven fibers," researchers found that the nerves could be reconnected at the damage site.  The animals with the implants "regained functionality" without any apparent adverse reactions.  While researchers caution that they are not ready to transfer the technology to humans yet, the results of the study are encouraging.  Eventually, this technology could be implemented as a treatment for similar spinal cord injuries, injuries of the optic nerve, and other types of nerve damage.

And in the meantime, there's always the space elevator application.  That, too, is moving closer to reality.

Monday, September 28, 2020

Tendo AB's Exoskeleton (Hand Unit)

This article in Health Europa describes an exoskeleton that could offer greater independence to people with high spinal cord injuries.  A modified space technology designed by Tendo AB, the new exoskeleton is a minimalist system for users with compromised hand strength or motor control.  The technology may be expanded to focus on other limbs, such as the elbow or knee.  Since the exoskeleton "(uses) the body’s signals as a source," it will be interesting to see what beneficial effects the device might have as a therapy tool.  There are many possibilities here; the hand technology alone has the potential to change many lives for the better.

Tuesday, September 1, 2020

Using KAFOs and a Mobility Scooter (Video)


Today's video is posted in response to a question someone asked about mobility.  When starting to use KAFOs (knee-ankle-foot orthoses) and trying to navigate a college campus, I was blessed to be provided with a mobility scooter.  This video shows how well the KAFOs worked with the scooter, even when I was relatively new to long leg braces.  Between the two, I gained an immense amount of independence.  (This clip is also featured in my video "6 Years in 6 Minutes," where you can see how the scooter works similarly outside on different surfaces.)


Scooters are not always an option if you have a spinal cord injury.  I could not have used one in the first year post-SCI due to the extensive spinal damage caused by the original accident.  As time has passed, a scooter has been a great device for me.  It's especially nice to be able to swivel the seat and not have to avoid a footrest when standing.  The scooter is easier on the wrists and shoulders than a manual wheelchair is, and can go over more terrain without trouble.  Several types of scooters give increased accessibility because they are smaller, as well.  The prices of scooters vary widely and you may find foundations or other groups able to help with the cost.  


A scooter is not an option or best choice for everybody with an injury or neurological condition.  Obviously each user who does try a scooter will find disadvantages and advantages for the individual situation.  But for those who are curious about life with KAFOs and wondering about possibilities, maybe this video will be a help.  


Note: if you have a spinal cord injury and are considering a mobility scooter, make sure to research the size and padding of the scooter's seat and foot area.

Tuesday, July 28, 2020

Getting KAFOs/ Long Leg Braces after Spinal Cord Injury

Today I'd like to share information about the process of getting KAFOs (Knee-Ankle-Foot Orthoses).  As usual, nothing here reflects a medical recommendation, professional opinion, or endorsement.  Note also that I receive no money or compensation for any of the products named.  I write about my own experiences and hope that they encourage others to keep moving forward.  Please seek advice from medical professionals and physical therapists. 

With that disclaimer, if you want to know more about KAFOs, where to start?  If you're like me and you have a spinal cord injury or similar neurological condition, or if you know someone who does, you may already have passed time surfing the internet.  I spent hours doing general research about leg braces.  There are a lot different types of bracing to help with therapy and functional walking.  HKAFOs (Hip-Knee-Ankle-Foot Orthoses) extend up around the hips and include a belt or back bracing, KAFOs generally run from mid-thigh down, and AFOs (Ankle-Foot Orthoses) are used for bracing below the knees.  (To learn more about types of leg braces and to see pictures, click here.)  Within these categories, realize that braces provide varying levels of support.  They may be sturdier for users with very little muscle function, or be relatively lightweight, intended to offer supplemental support for toe droop or knee buckling.  Newer models of some of these braces are mechanically assistive with springs, or feature robotic stance control that responds to muscle movement. 

Over time, I've tried HKAFOs, KAFOs, and AFOs of multiple types (thank you, Hanger!), including stance control C-braces, polypropylene plastic and carbon fiber AFOs, thermoplastic heavy-duty KAFOs, modular KAFOs (my name for the Allards Combo brand), and (H)KAFOs with a hip belt and the Up and Go bracket system for gait stabilization.  I consider myself blessed to have had the opportunity to experiment with various kinds of bracing.  Sometimes braces have to be fitted directly for the user and cannot be used on a trial basis, or are too expensive and rare for clinics to have on-hand.

To schedule an appointment with an orthotist, I had to have a doctor's written approval (a scrip).  Insurance wants the document to show that braces are medically necessary or beneficial for your health.  I talked with my insurance provider directly and asking about leg braces as authorized Durable Medical Equipment.  I would suppose that spine centers or specialty clinics devoted to SCI rehab have standard ways of doing all of this. 

The first visit at the orthotics clinic was an assessment of the injury and its specific impact.  This stage was mostly answering questions.  What muscles were functioning?  What was my level of independence at different tasks, such as sitting up or leaning over?  Did I have any walking ability?  I was using a wheelchair for mobility at the time and had a little hip function.  When my knees were blocked or locked straight, I could take small steps.  Information like this helps determine what bracing is viable.

For me, the results were almost a disappointment.  My request for braces was nearly turned down because my walking ability was very poor.  Fortunately, I had a great advocate in my orthotist.  If it hadn't been for him, the braces would never have happened.  (If you know much about SCIs, you know that opportunities can easily be shut down.  Don't be discouraged and don't give up.  Be persistent and pursue all your options.)

Fitting for leg braces was a separate appointment.  All I had to do was show up.  The casting process was fairly straightforward.  It just involved having measurements taken and being still while the clinician created a mold of my legs.

 


The molds were used to fabricate custom braces for use at home.  I picked up the braces  about a month later, approximately two weeks after the one-year anniversary of my accident.  Since we had been able to keep my body used to being upright, I did not have to go through any stages of readjusting, such as worrying about blood pressure problems or potential blood clots.  Getting used to the braces mainly meant wearing them for longer periods of time each day: an hour one day, two hours the next day, four hours the next, and so on.  By July 4, I could walk down the local trail just enough to view fireworks while standing.  It was a long and triumphant way from the hospital bed where I had been exactly a year earlier.  Well worth it!


Obviously that isn't the whole story about long leg braces.  There is much more to say about adjusting to them and using them for daily function, but I hope that these short insights will help others who are looking into leg braces.  Please contact me or leave a comment below if you have any questions!

Wednesday, July 15, 2020

Headset for Hand Function

"Gaming headset design" meets "3D printing" meets "EEG" meets "Functional E-Stim" meets "therapy at home."  Everything here meets to accomplish a single goal: building a headset to encourage improved hand function after spinal cord injury.  The brainchild of PhD student Nina Petric-Gray (University of Glasgow), this headset device is being developed for users to work with from home.  3D printing, FES, home therapy, and gaming headsets (for VR rehab) have all been themes of my previous posts, so the headset caught my attention for many reasons.  Petric-Gray's invention is a creative synthesis of a lot of technologies.  Incidentally, for readers who want to know more about the headset, it's currently under trial in Glasgow. 

Saturday, June 13, 2020

Video: About KAFOs

If you'd like to know more about what knee-ankle-foot orthotics are, how they work, and how they are worn, this video is for you.  More to come about both KAFOs and AFOs.  Questions or suggestions?  Please comment below!

Monday, February 17, 2020

TruST Force Field

In this study from Columbia Engineering, researchers are designing a new rehabilitation device to help people who have limited trunk control. Trunk-Support Trainer, or TruST, is a unique idea: it's an assistive tool intended to increase users' sitting and balance abilities over time by retraining better postural control. Depending on the level of spinal cord injury (or on the severity of certain other neurological conditions or diseases), lack of torso control can represent a serious issue in everyday life. In response to the problem, TruST is supposed to help users improve their posture and regain more mobility. Researchers are calling it a "force field." Not quite the typical science fiction type of force field, but it's a clever concept, and I hope it turns out to be a useful one.

Monday, November 25, 2019

Ryan Straschnitzki's Progress and Electrical Stimulation

Sharing exciting videos about an experimental spinal surgery and an ongoing recovery story.  Ryan Straschnitzki was one of the Humboldt Bronco hockey players injured in a very serious bus accident in Canada last year.  Fourteen people were injured; sixteen were killed.  Ryan sustained a spinal cord injury in the accident and has been diligently pursuing physical therapy since then.  Recently he underwent surgery in Thailand to have an epidural stimulator implanted in his spine.  The device is designed to stimulate nerves below the site of his injury.  The results are pretty incredible, as you can see from these videos: when the stimulator is turned on, he's able to move his leg, and therapists are now helping him work on taking steps.  Please keep Ryan Straschnitzki in your thoughts and prayers for continued progress.

As for the epidural stimulator technology, it's been in the news multiple times in the last few years.  I thought readers might be curious to know more about what it entails.  I am not a medical doctor and have not tried this technology, but according to reports, the internal stimulation process goes something like this: surgeons place a device called an implantable pulse generator (IPG) in the user's back or elsewhere in the body, and connect that device to electrodes put on the tissue around the spinal cord.  They can program electrical currents sending signals to the IPG and, from there, to the electrodes.  "The idea, in very basic terms, is to stimulate neurons" when the electrical stimulation is activated, as reported by a CBC News article (see here for the complete article).  If you're interested in learning more, Wings for Life's site features more details and an info graphic.

There is a non-invasive version of electrical stimulation that has also seen some amazing results.  This technique, known as transcutaneous stimulation, involves placing the electrodes on the skin of the user's lower back and then activating the electrodes with external electrical stimulation.  An NIH news release notes that by the end of one study, the users "were able to move their legs with no stimulation at all and their range of movement was — on average — the same as when they were moving while receiving stimulation."  (Click here to read the full 2015 NIH release.)

All in all, these strategies have the goal of reactivating dormant nerve pathways or creating new ones altogether.  Life-changing outcomes.

NB: For more, you can read my older posts on related studies happening at the University of Kentucky: September 2018, January 2018, and November 2017.  Thanks to Susan Harkema and Claudia Angeli for their work in Louisville!


Friday, October 4, 2019

Exoskeleton Update

A big story on all of the news outlets this week:
"Paralyzed man able to walk with mind-controlled exoskeleton suit"

From applications in medicine to industry to the military, exoskeletons are big news right now.  This interesting review, "The Human Exoskeleton comes of age," was released only a few days before the story of a new mind-controlled exoskeleton came out. 

Monday, September 16, 2019

Emotions and Physical Recovery

Hmm . . . emotions may directly affect recovery after spinal cord injury.  (I'm not sure how I "feel" about that!) 
In all seriousness, this conclusion seems sensible enough, given the general importance of mental and emotional health for anybody's physical health.  It remains to be seen what the next step would be following this type of a study. 

Monday, September 9, 2019

NervGen Pharma Trials and Scar Tissue

For readers who are watching NervGen Pharma, here's an update on upcoming trials for people with spinal cord injuries and multiple sclerosis.  If you're new to NervGen, they're working on a peptide (NVG-291) that will allow nerve regeneration in spite of scar tissue.  You can read more about NervGen and NVG-291 here
I've talked about scar tissue and various treatments of it several times before: using an EpiPen for SCIs, eating blue M&Ms (yes, M&Ms), injecting nanoparticles, and inserting an internal scaffolding.  All of these different methods tackle the situation of scar tissue which blocks regeneration.  The blue M&M seems like it would be most popular, and I'm keeping an eye on it . . . but it's not that simple!  Caveat lector. 

Monday, July 22, 2019

The EpiPen is Mightier than the Spinal Cord Trauma?

I've posted on some fascinating technology and treatments in the past, but this development is an eye-catcher.  Scientists at the University of Michigan discovered that an injection of non-pharmaceutical nanoparticles after a spinal cord injury can redirect the natural immune response and support nervous system repair.  This "EpiPen" for the SCI would minimize or possibly even prevent dangerous inflammation and promote regeneration at a critical time, maybe inhibiting the growth of scar tissue that could (literally) stand in the way of nerve regeneration.
Nanotechnology in medicine sounds like science fiction, but it isn't.  It's part of a much larger conversation about safe, responsible application of nanoparticles in contexts ranging from spaceflight and bioethics to car manufacture and food production.  SCI EpiPens are an incredible entry into the debate.  Practically speaking, they could change a lot of lives.  Order yours today?

Wednesday, July 10, 2019

Nerve Transfer for Regaining Movement

Nerve Transfer is an up-and-coming treatment to help with regaining some arm and hand movement after spinal cord injuries.  It has been shown to have pretty amazing results for restoring critical motions (e.g., grasping, pinching), as you can see in the research videos attached to this article.  Something to be aware of for anyone who is looking into alternative options. 

Tuesday, June 25, 2019

More Research in Louisville, KY

This is a pretty exciting article about more of the results coming out of the University of Louisville.  Researcher Susan Harkema is doing some great work there.  I appreciate her tenacity and her general attitude about SCI research.  She seems to recognize not only that even the smallest changes are worth tracking, but also that they have the potential to change lives for the better in big ways.