Winfried Mayr1, Matthias Krenn, Milan R Dimitrijevic. 1. aCenter for Medical Physics and Biomedical Engineering, Medical University of Vienna bInstitute of Electrodynamics, Microwave and Circuit Engineering, Vienna University of Technology, Vienna, Austria cFoundation for Movement Recovery, Oslo, Norway dBaylor College of Medicine, Houston, Texas, USA.
Abstract
PURPOSE OF REVIEW: The Purpose of this review is to outline and explain the therapeutic use of electrical spinal cord stimulation (SCS) for modification of spinal motor output. Central functional stimulation provides afferent input to posterior root neurons and is applied to improve volitional movements, posture and their endurance, control spasticity, and improve bladder function or perfusion in the lower limbs. Clinical accomplishments strongly depend on each individual's physiological state and specific methodical adaptation to that physiological state. RECENT FINDINGS: Effectiveness of this neuromodulory technique for changing motor control after spinal cord injury (SCI) continues to be explored along with the underlying mechanisms of its effect in people with complete and incomplete spinal cord injuries. There are extensive studies of tonic and rhythmical activity elicited from the lumbar cord as well as data demonstrating augmentation of residual volitional activity. Recent studies have focused on verifying if and how SCS can modify features of neurocontrol in ambulatory spinal cord patients. SUMMARY: In this review, we emphasize recent publications of research revealing that SCS can substitute for the reduced brain drive for control of excitability in people with SCI. Artificially replacing diminished or lost brain control over the spinal cord has limitations. A fundamental requirement for successful SCS application is analysis of each individual's residual postinjury neural function. This will allow a better understanding of the physiological interactions between SCS and spinal cord motor control below injury and provide criteria for its application. Finally, the publication of both successful and failed applications of SCS will be crucial for gaining future progress.
PURPOSE OF REVIEW: The Purpose of this review is to outline and explain the therapeutic use of electrical spinal cord stimulation (SCS) for modification of spinal motor output. Central functional stimulation provides afferent input to posterior root neurons and is applied to improve volitional movements, posture and their endurance, control spasticity, and improve bladder function or perfusion in the lower limbs. Clinical accomplishments strongly depend on each individual's physiological state and specific methodical adaptation to that physiological state. RECENT FINDINGS: Effectiveness of this neuromodulory technique for changing motor control after spinal cord injury (SCI) continues to be explored along with the underlying mechanisms of its effect in people with complete and incomplete spinal cord injuries. There are extensive studies of tonic and rhythmical activity elicited from the lumbar cord as well as data demonstrating augmentation of residual volitional activity. Recent studies have focused on verifying if and how SCS can modify features of neurocontrol in ambulatory spinal cord patients. SUMMARY: In this review, we emphasize recent publications of research revealing that SCS can substitute for the reduced brain drive for control of excitability in people with SCI. Artificially replacing diminished or lost brain control over the spinal cord has limitations. A fundamental requirement for successful SCS application is analysis of each individual's residual postinjury neural function. This will allow a better understanding of the physiological interactions between SCS and spinal cord motor control below injury and provide criteria for its application. Finally, the publication of both successful and failed applications of SCS will be crucial for gaining future progress.
Authors: Andrea L Behrman; Shelley A Trimble; Laura C Argetsinger; MacKenzie T Roberts; M J Mulcahey; Lisa Clayton; Mary E Gregg; Doug Lorenz; Elizabeth M Ardolino Journal: Top Spinal Cord Inj Rehabil Date: 2019
Authors: Andrea L Behrman; Laura C Argetsinger; MacKenzie T Roberts; Danielle Stout; Jennifer Thompson; Beatrice Ugiliweneza; Shelley A Trimble Journal: Top Spinal Cord Inj Rehabil Date: 2019
Authors: Elizabeth A Bye; Martin E Héroux; Claire L Boswell-Ruys; Monica A Perez; Mariel Purcell; Julian Taylor; Bonsan B Lee; Euan J McCaughey; Jane E Butler; Simon C Gandevia Journal: Spinal Cord Date: 2022-01-11 Impact factor: 2.473