Phase-dependent electromyographic activity of the lower-limb muscles of a patient with clinically complete spinal cord injury during orthotic gait

1998 ◽  
Vol 120 (1) ◽  
pp. 139-142 ◽  
Author(s):  
Narumi Kojima ◽  
Kimitaka Nakazawa ◽  
Shin-Ichiroh Yamamoto ◽  
Hideo Yano
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Lower Limb ◽  
Electromyographic Activity ◽  
Lower Limb Muscles ◽  
Cord Injury ◽  
Limb Muscles ◽  
Complete Spinal Cord Injury

scholarly journals Spasms after spinal cord injury show low-frequency intermuscular coherence

2018 ◽  
Vol 120 (4) ◽  
pp. 1765-1771
Author(s):  
Stefane A. Aguiar ◽  
Stuart N. Baker ◽  
Katie Gant ◽  
Jorge Bohorquez ◽  
Christine K. Thomas
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Lower Limb ◽  
Low Frequency ◽  
Low Frequencies ◽  
First Report ◽  
Lower Limb Muscles ◽  
Cord Injury ◽  
Limb Muscles ◽  
Intermuscular Coherence

Intermuscular coherence allows the investigation of common input to muscle groups. Although beta-band (15–30 Hz) intermuscular coherence is well understood as originating from the cortex, the source of intermuscular coherence at lower frequencies is still unclear. We used a wearable device that recorded electromyographic (EMG) signals during a 24-h period in four lower limb muscles of seven spinal cord injury patients (American Spinal Cord Injury Association impairment scale: A, 6 subjects; B, 1 subject) while they went about their normal daily life activities. We detected natural spasms occurring during these long-lasting recordings and calculated intermuscular coherence between all six possible combinations of muscle pairs. There was significant intermuscular coherence at low frequencies, between 2 and 13 Hz. The most likely source for this was the spinal cord and its peripheral feedback loops, because the spinal lesions in these patients had interrupted connections to supraspinal structures. This is the first report to demonstrate that the spinal cord is capable of producing low-frequency intermuscular coherence with severely reduced or abolished descending drive. NEW & NOTEWORTHY This is the first report to demonstrate that intermuscular coherence between lower limb muscles at low frequencies can be produced by the spinal cord with severely reduced or abolished descending drive.

scholarly journals Strategies and performances of Functional Electrical Stimulation Cycling using the BerkelBike with Spinal Cord Injury in a competition context (CYBATHLON)

2017 ◽  
Vol 27 (4) ◽  
Author(s):  
Rik Berkelmans ◽  
Billy Woods
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Electrical Stimulation ◽  
Functional Electrical Stimulation ◽  
Lower Limb ◽  
Imperial College ◽  
Surface Electrode ◽  
Arm Cranking ◽  
Lower Limb Muscles ◽  
Cord Injury

The functional electrical stimulation (FES) bicycle race was an event at the Cybathlon, held in Zurich October 2016. BerkelBike BV (The Netherlands) in collaboration with Imperial College London entered a spinal cord injury pilot who had tetraplegia to compete in this event. The BerkelBike Pro is a commercially available FES capable recumbent which is normally driven by the arm- and leg power. The arm cranking part was disabled. Now the tricycle must be driven using the pilots own lower limb muscles through stimulation in accordance with race rules. The bike used during the race was also adapted with a fixed gear for improved efficiency. The pilot who represented this team come second place overall in the event and attained the fastest race time of all pilots who utilised surface electrode FES. Steps can be taken to increase the race efficiency of the BerkelBikes and its FES capabilities even further.

Epidural stimulation for cardiovascular function increases lower limb lean mass in individuals with chronic motor complete spinal cord injury

2020 ◽  
Vol 105 (10) ◽  
pp. 1684-1691
Author(s):  
Bonnie Legg Ditterline ◽  
Susan J. Harkema ◽  
Andrea Willhite ◽  
Sean Stills ◽  
Beatrice Ugiliweneza ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Lean Mass ◽  
Lower Limb ◽  
Cardiovascular Function ◽  
Epidural Stimulation ◽  
Cord Injury ◽  
Complete Spinal Cord Injury

scholarly journals Predictors of volitional motor recovery with epidural stimulation in individuals with chronic spinal cord injury

Brain ◽  
2020 ◽  
Author(s):  
Samineh Mesbah ◽  
Tyler Ball ◽  
Claudia Angeli ◽  
Enrico Rejc ◽  
Nicholas Dietz ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Lower Extremity ◽  
Lower Limb ◽  
Motor Recovery ◽  
Cervical Cord ◽  
Voluntary Movements ◽  
Epidural Stimulation ◽  
Cord Injury ◽  
Complete Spinal Cord Injury

Abstract Spinal cord epidural stimulation (scES) has enabled volitional lower extremity movements in individuals with chronic and clinically motor complete spinal cord injury and no clinically detectable brain influence. The aim of this study was to understand whether the individuals’ neuroanatomical characteristics or positioning of the scES electrode were important factors influencing the extent of initial recovery of lower limb voluntary movements in those with clinically motor complete paralysis. We hypothesized that there would be significant correlations between the number of joints moved during attempts with scES prior to any training interventions and the amount of cervical cord atrophy above the injury, length of post-traumatic myelomalacia and the amount of volume coverage of lumbosacral enlargement by the stimulation electrode array. The clinical and imaging records of 20 individuals with chronic and clinically motor complete spinal cord injury who underwent scES implantation were reviewed and analysed using MRI and X-ray integration, image segmentation and spinal cord volumetric reconstruction techniques. All individuals that participated in the scES study (n = 20) achieved, to some extent, lower extremity voluntary movements post scES implant and prior to any locomotor, voluntary movement or cardiovascular training. The correlation results showed that neither the cross-section area of spinal cord at C3 (n = 19, r = 0.33, P = 0.16) nor the length of severe myelomalacia (n = 18, r = −0.02, P = 0.93) correlated significantly with volitional lower limb movement ability. However, there was a significant, moderate correlation (n = 20, r = 0.59, P = 0.006) between the estimated percentage of the lumbosacral enlargement coverage by the paddle electrode as well as the position of the paddle relative to the maximal lumbosacral enlargement and the conus tip (n = 20, r = 0.50, P = 0.026) with the number of joints moved volitionally. These results suggest that greater coverage of the lumbosacral enlargement by scES may improve motor recovery prior to any training, possibly because of direct modulatory effects on the spinal networks that control lower extremity movements indicating the significant role of motor control at the level of the spinal cord.

scholarly journals Bilateral L2 dorsal root ganglion-stimulation suppresses lower limb spasticity following chronic motor complete Spinal Cord Injury: A case report

2020 ◽  
Vol 13 (3) ◽  
pp. 637-639
Author(s):  
Sadaf Soloukey ◽  
Judith Drenthen ◽  
Rutger Osterthun ◽  
Judith D. de Rooij ◽  
Chris I. De Zeeuw ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Case Report ◽  
Dorsal Root Ganglion ◽  
Lower Limb ◽  
Dorsal Root ◽  
Cord Injury ◽  
Limb Spasticity ◽  
Lower Limb Spasticity ◽  
Complete Spinal Cord Injury
Sign in / Sign up

Export Citation Format

Share Document