NDLI: A portable system to measure knee extensor spasticity after spinal cord injury

Content Provider	Springer Nature : BioMed Central
Author	De Santis, Dalia Perez, Monica A.
Abstract	The pendulum test is a quantitative method used to assess knee extensor spasticity in humans with spinal cord injury (SCI). Yet, the clinical implementation of this method remains limited. The goal of our study was to develop an objective and portable system to assess knee extensor spasticity during the pendulum test using inertial measurement units (IMU). Spasticity was quantified by measuring the first swing angle (FSA) using a 3-dimensional optical tracking system (with external markers over the iliotibial band, lateral knee epicondyle, and lateral malleolus) and two wireless IMUs (positioned over the iliotibial band and mid-part of the lower leg) as well as a clinical exam (Modified Ashworth Scale, MAS). Measurements were taken on separate days to assess test–retest reliability and device agreement in humans with and without SCI. We found no differences between FSA values obtained with the optical tracking system and the IMU-based system in control subjects and individuals with SCI. FSA values from the IMU-based system showed excellent agreement with the optical tracking system in individuals with SCI (ICC > 0.98) and good agreement in controls (ICC > 0.82), excellent test–retest reliability across days in SCI (ICC = 0.93) and good in controls (ICC = 0.87). Notably, FSA values measured by both systems showed a strong association with MAS scores ( $\uprho$ ~ −0.8) being decreased in individuals with SCI with higher MAS scores, reflecting the presence of spasticity. These findings suggest that our new portable IMU-based system provides a robust and flexible alternative to a camera-based optical tracking system to quantify knee extensor spasticity following SCI.
Related Links	https://jneuroengrehab.biomedcentral.com/counter/pdf/10.1186/s12984-024-01326-9.pdf
Ending Page	14
Page Count	14
Starting Page	1
File Format	HTM / HTML
ISSN	17430003
DOI	10.1186/s12984-024-01326-9
Journal	Journal of NeuroEngineering and Rehabilitation
Issue Number	1
Volume Number	21
Language	English
Publisher	BioMed Central
Publisher Date	2024-04-09
Access Restriction	Open
Subject Keyword	Neurosciences Neurology Rehabilitation Medicine Biomedical Engineering and Bioengineering Spasticity Spinal cord injury Pendulum test Modified Ashworth Scale Inertial measurement units Reliability
Content Type	Text
Resource Type	Article
Subject	Health Informatics Rehabilitation
Journal Impact Factor	5.2/2023
5-Year Journal Impact Factor	5.6/2023

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Predictive value of the pendulum test for assessing knee extensor spasticity

Data-driven characterization of walking after a spinal cord injury using inertial sensors

Measurement of lower-limb muscle spasticity: Intrarater reliability of Modified Modified Ashworth Scale

Robotic pilot study for analysing spasticity: clinical data versus healthy controls

Elbow spasticity during passive stretch-reflex: clinical evaluation using a wearable sensor system

The inter rater reliability of the original and of the modified Ashworth scale for the assessment of spasticity in patients with spinal cord injury

Trainer in a pocket - proof-of-concept of mobile, real-time, foot kinematics feedback for gait pattern normalization in individuals after stroke, incomplete spinal cord injury and elderly patients

Stance controlled knee flexion improves stimulation driven walking after spinal cord injury

Postural control strategy after incomplete spinal cord injury: effect of sensory inputs on trunk–leg movement coordination

A portable system to measure knee extensor spasticity after spinal cord injury

Similar Documents

Predictive value of the pendulum test for assessing knee extensor spasticity

Data-driven characterization of walking after a spinal cord injury using inertial sensors

Measurement of lower-limb muscle spasticity: Intrarater reliability of Modified Modified Ashworth Scale

Robotic pilot study for analysing spasticity: clinical data versus healthy controls

Elbow spasticity during passive stretch-reflex: clinical evaluation using a wearable sensor system

The inter rater reliability of the original and of the modified Ashworth scale for the assessment of spasticity in patients with spinal cord injury

Trainer in a pocket - proof-of-concept of mobile, real-time, foot kinematics feedback for gait pattern normalization in individuals after stroke, incomplete spinal cord injury and elderly patients

Stance controlled knee flexion improves stimulation driven walking after spinal cord injury

Postural control strategy after incomplete spinal cord injury: effect of sensory inputs on trunk–leg movement coordination

A portable system to measure knee extensor spasticity after spinal cord injury