Spinal Cord Stimulation, Physical Therapy Help Paralyzed Man Stand, Walk with Assistance

Spinal cord stimulation and physical therapy have helped a man paralyzed since 2013 regain his ability to stand and walk with assistance. The results, achieved in a research collaboration between Mayo Clinic and UCLA, are reported in Nature Medicine. With an implanted stimulator turned on, the man was able to step with a front-wheeled walker while trainers provided occasional assistance. He made 113 rehabilitation visits to Mayo Clinic over a year, and achieved milestones during individual sessions:
  • Total distance: 111 yards (102 meters) - about the length of a football field
  • Total number of steps: 331
  • Total minutes walking with assistance:16 minutes
  • Step speed: 13 yards per minute (0.20 meters per second)

"What this is teaching us is that those networks of neurons below a spinal cord injury still can function after paralysis," says Kendall Lee, M.D., Ph.D., co-principal investigator, neurosurgeon and director of Mayo Clinic's Neural Engineering Laboratories.

In the study, the man's spinal cord was stimulated by an implanted electrode, enabling neurons to receive the signal that he wanted to stand or step.

"Now I think the real challenge starts, and that's understanding how this happened, why it happened, and which patients will respond, says Kristin Zhao, Ph.D., co-principal investigator and director of Mayo Clinic's Assistive and Restorative Technology Laboratory.

Currently, as a safety precaution, the patient takes steps only under the supervision of the research team.

Early Findings

The man, now 29, injured his spinal cord at the thoracic vertebrae in the middle of his back in a snowmobile accident in 2013. He was diagnosed with a complete loss of function below the spinal cord injury, meaning he could not move or feel anything below the middle of his torso.

In the study, which began in 2016, the man participated in 22 weeks of physical therapy and then had an electrode surgically implanted by Dr. Lee and his Mayo Clinic neurosurgery team.

The implant sits in the epidural space - the outermost part of the spinal canal - at a specific location below the injured area. The electrode connects to a pulse generator device under the skin of the man's abdomen and communicates wirelessly with an external controller. Mayo Clinic received permission from the U.S. Food and Drug Administration to use the device for a condition not covered by its FDA-approved label.

Continued Progress

The research team then tried to determine if the man could stand and walk with assistance. During 113 rehabilitation sessions, the researchers adjusted stimulation settings, trainer assistance, harness support and speed of the treadmill to allow the man maximum independence.

The research demonstrated that the man was able to walk over ground using a front-wheeled walker and step on a treadmill placing his arms on support bars to help with balance. However, when stimulation was off, the man remained paralyzed.

In the first week, the participant used a harness to lower his risk of falling and to provide upper body balance. Trainers were positioned at his knees and hips to help him stand, swing his legs and shift his weight. Because the man did not regain sensation, he initially used mirrors to view his legs, and trainers described leg position, movement and balance. By week 25, he did not need a harness, and trainers offered only occasional help. By the end of the study period, the man learned to use his entire body to transfer weight, maintain balance and propel forward, requiring minimal verbal cues and periodic glances at his legs.

Megan L Gill, Peter J Grahn, Jonathan S Calvert, Margaux B Linde, Igor A Lavrov, Jeffrey A Strommen, Lisa A Beck, Dimitry G Sayenko, Meegan G Van Straaten, Dina I Drubach, Daniel D Veith, Andrew R Thoreson, Cesar Lopez, Yury P Gerasimenko, V Reggie Edgerton, Kendall H Lee, Kristin D Zhao.
Neuromodulation of lumbosacral spinal networks enables independent stepping after complete paraplegia.
Nature Medicine (2018). doi: 10.1038/s41591-018-0175-7 DO.

Most Popular Now

Merck and Tencent Announce Collaboration…

Merck, a leading science and technology company, signed a strategic collaboration agreement with Tencent, a leading provider of Internet value added services. The collaboration will primarily focus on increasing public...

Merck Granted U.S. Patent for Novel Comb…

Merck, a leading science and technology company, today announced that it has been granted Patent No. US 10,193,695 by the United States Patent and Trademark Office (USPTO). The patent relates...

Applications Now Open for Pioneering Dig…

The Yorkshire & Humber AHSN (Academic Health Science Network), in partnership with mHabitat, announces that applications for the 2019 Propel@YH digital health accelerator programme are now open. Propel@YH has been...

The European Health Catapult Program for…

Through dedicated sessions, a group of international top-level investors, key healthcare leaders and industry stakeholders work closely together challenging 40+ ambitious startups to optimize their business plan and strengthen their...

Flagship Axe the Fax Trust Rolls out Hyb…

Leeds Teaching Hospitals NHS Trust (LTHT), the organisation at the forefront of the national Axe the Fax campaign, is implementing an electronic fax solution to tackle its last remaining machines...

First EU Citizens Using ePrescriptions i…

The first EU patients can use digital prescriptions issued by their home doctor when visiting a pharmacy in another EU country: Finnish patients are now able to go to a...

Final Report: Provision of a Market Stud…

The aim of the study is to examine the telemedicine market in Europe and to understand the factors that determine its development. The analysis maps telemedicine applications and solutions, and...

Open Access Drug Development Tools Featu…

New open access tools for drug development, obesity, and the environmental impacts of medicines are the focus of a new IMI2 Call for proposals launched today. The total budget of...

Boehringer Ingelheim (Canada) Ltd. and I…

Boehringer Ingelheim (Canada) Ltd. and IBM Canada announced at the Healthcare Information and Management Systems Society (HIMSS) conference in Orlando, Florida, their plans to explore the use of blockchain technology...

The NHS Long Term Plan: Cracking the Da …

Opinion Article by Prof. Michael Thick, Chief Medical Officer, Chief Clinical Information Officer, IMS MAXIMS Reading the NHS Long Term Plan this week, I had a definite sense of déjà vu...

Highland Marketing Advisory Board Respon…

The first meeting of Highland Marketing's newly expanded advisory board discussed the NHS Long Term Plan and what will be needed to make it a success. Structural change, leadership, investment...