Dynamic Three-Dimensional Ultrasound to Evaluate Scapular Movement Among Manual Wheelchair Users and Healthy Controls

Manual wheelchair propulsion (MWP) is an inefficient and physically straining process. A reliably fabricated and instrumented wheel can help researchers to accurately calculate the forces and moments exerted by the wheelchair users and propose strategies to improve MWP. In this study, an instrumented wheel is designed, fabricated, and validated by using general uncertainty analysis. A six-component transducer is used to measure three-dimensional forces and moments applied by the wheelchair user on the handrim. The output of the transducer are forces and moments, which are directly transmitted to a PC using a USB port. By developing the transformation equations, the actual forces and moments on the hand of the wheelchair user are calculated. The angular position of the hand on the handrim is calculated from the kinetic data obtained through the instrumented wheel, and the derived equations. The general uncertainty analysis method is used to calculate the uncertainty values for the variables of interest with the Taylor series expansions. An analysis of the results shows that it is possible to obtain reliable information for MWP by using the instrumented wheel. Most of the data have uncertainties under 5% during much of the propulsion phase, and the patterns and overall behavior of the results are comparable to published data.

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Calibration and Evaluation of a Force Measurement Glove for Field-Based Monitoring of Manual Wheelchair Users

2020 IEEE 20th International Conference on Bioinformatics and Bioengineering (BIBE) ◽

10.1109/bibe50027.2020.00170 ◽

2020 ◽

Author(s):

Anthony Anderson ◽

Alexander W. Hooke ◽

Chandrasekaran Jayaraman ◽

Adam Burns ◽

Emma Fortune ◽

...

Keyword(s):

Force Measurement ◽

Wheelchair Users ◽

Manual Wheelchair

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Developmental features and predicting airway failure risk in critically ill children with mandibular hypoplasia using 3D computational tomographic analysis

Scientific Reports ◽

10.1038/s41598-021-89302-4 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Doo-Hwan Kim ◽

Eunseo Gwon ◽

Junheok Ock ◽

Jong-Woo Choi ◽

Jee Ho Lee ◽

...

Keyword(s):

Risk Factors ◽

Difficult Airway ◽

Hyoid Bone ◽

Three Dimensional ◽

Upper Airway ◽

Critically Ill Children ◽

Healthy Controls ◽

Mandibular Hypoplasia ◽

Tongue Position ◽

Developmental Features

AbstractIn children with mandibular hypoplasia, airway management is challenging. However, detailed cephalometric assessment data for this population are sparse. The aim of this study was to find risk factors for predicting difficult airways in children with mandibular hypoplasia, and compare upper airway anatomical differences using three-dimensional computed tomography (3D CT) between children with mandibular hypoplasia and demographically matched healthy controls. There were significant discrepancies in relative tongue position (P < 0.01) and anterior distance of the hyoid bone (P < 0.01) between patients with mandibular hypoplasia and healthy controls. All mandibular measures were significantly different between the two groups, except for the height of the ramus of the mandible. After adjusting for age and sex, the anterior distance of hyoid bone and inferior pogonial angle were significantly associated with a difficult airway (P = 0.01 and P = 0.02). Quantitative analysis of upper airway structures revealed significant discrepancies, including relative tongue position, hyoid distance, and mandible measures between patients with mandibular hypoplasia and healthy controls. The anterior distance of the hyoid bone and inferior pogonial angle may be risk factors for a difficult airway in patients with mandibular hypoplasia.

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Pain and its impact on functioning and disability in manual wheelchair users with spinal cord injury: a protocol for a mixed-methods study

BMJ Open ◽

10.1136/bmjopen-2020-044152 ◽

2021 ◽

Vol 11 (1) ◽

pp. e044152

Author(s):

Mokgadi Kholofelo Mashola ◽

Elzette Korkie ◽

Diphale Joyce Mothabeng

Keyword(s):

Spinal Cord ◽

Spinal Cord Injury ◽

South African ◽

Phase 1 ◽

Pain Medication ◽

Self Management ◽

Medication Misuse ◽

Wheelchair Users ◽

Manual Wheelchair ◽

Cord Injury

IntroductionApproximately 80% of people with spinal cord injury experience clinically significant chronic pain. Pain (whether musculoskeletal or neuropathic) is consistently rated as one of the most difficult problems to manage and negatively affects the individual’s physical, psychological and social functioning and increases the risk of pain medication misuse and poor mental health. The aim of this study is to therefore determine the presence of pain and its impact on functioning and disability as well as to develop a framework for self-management of pain for South African manual wheelchair users with spinal cord injury.Methods and analysisCommunity-dwelling participants with spinal cord injury will be invited to participate in this three-phase study. Phase 1 will use a quantitative, correlational design to determine factors related to pain such as pectoralis minor length, scapular dyskinesis, wheelchair functioning, physical quality of life, community reintegration and pain medication misuse. Demographic determinants of pain such as age, gender, type of occupation, completeness of injury and neurological level of injury will also be investigated. Participants with pain identified in phase 1 will be invited to partake in a qualitative descriptive and contextually designed phase 2 to explore their lived experience of pain through in-depth interviews. The results of phases 1 and 2 will then be used with the assistance from experts to develop a framework for self-management of pain using a modified Delphi study. Data analysis will include descriptive and inferential statistics (quantitative data) and thematic content analysis (qualitative data).Ethics and disseminationApproval for this study is granted by the Faculty of Health Sciences Research Ethics Committee of the University of the Pretoria (approval number 125/2018). This study is registered with the South African National Health Research Database (reference GP201806005). This study’s findings will be shared in academic conferences and published in scientific peer-reviewed journals.

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