Adjusting Wheelchair Set-Up to Minimize Shoulder Joint Forces During Propulsion
Recruitment status was: Recruiting
Individuals who use a manual wheelchair depend upon their upper limbs to provide a means of locomotion during completion of their activities of daily living. As a result of greater than normal usage of the upper limbs, shoulder pain and pathology is common among manual wheelchair users. Accordingly, proper wheelchair set-up may be paramount to preventing injuries and maintaining comfort during locomotion.
The purpose of this research study is to create a subject-specific computer model of wheelchair propulsion to provide information on wheelchair set-up (in particular, axle placement). The primary objective of this study is to investigate the effect of wheelchair set-up on shoulder joint forces during wheelchair propulsion; the secondary objective is to develop a predictive model to identify differences in shoulder joint forces that result from altering the axle position and seating set-up in user's wheelchairs.
The hypothesis of the study is that outputs from a patient-specific model will reveal that the current axle position for each subject results in peak shoulder joint forces that are greater than those predicted from an altered axle position (determined by the model). The overall goal is to then adjust each manual wheelchair user's axle placement to one that minimizes the magnitude of shoulder joint forces throughout propulsion. It is intended that in doing so, the repetitive strain injuries associated with manual wheelchair propulsion may be reduced, prolonging a pain-free way of life for this population.
Upper Limb Pain
|Study Design:||Observational Model: Case Control
Time Perspective: Prospective
|Official Title:||Computationally Quantifying Wheelchair Set-Up to Minimize Peak Shoulder Joint Forces Throughout Manual Wheelchair Propulsion: A Pilot Study|
- Peak shoulder joint forces [ Time Frame: During the propulsive phase of the push stroke at the time of data collection ]
- Propulsion Speed [ Time Frame: Measured during the data collection process ]
- Horizontal and Vertical Axle Placement [ Time Frame: Measured prior to data collection on each test day ]
|Study Start Date:||July 2008|
|Estimated Study Completion Date:||July 2010|
|Estimated Primary Completion Date:||October 2009 (Final data collection date for primary outcome measure)|
Able-bodied participants: Able-bodied individuals will be asked to propel a wheelchair at a self-selected speed for a period of time during which data will be collected on their propulsion biomechanics. It is assumed, for the purpose of the study, that un-learned able-bodied individuals learning to propel a wheelchair reflect newly injured individuals who are just getting accustomed to a new chair.
Participants with paraplegia: Individuals who are at least 1-year post injury and have used a manual wheelchair as their primary means of locomotion during this time, will be assumed to be, for the purpose of this study, experienced wheelchair users.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00785278
|United States, New Jersey|
|Kessler Medical Rehabilitation Research and Education Center|
|West Orange, New Jersey, United States, 07052|
|Principal Investigator:||Sarah R. Dubowsky, Ph.D.||Kessler Medical Rehabilitation Research and Education Center|