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Effect of Ankle-foot Orthoses Trim Line Modifications on Ankle and Knee Motion and Force.

NCT01865682 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 10

Last updated 2017-10-06

No results posted yet for this study

Summary

The purpose of this study is to quantify changes in ankle and knee motion and force resulting from five progressive modifications to the anterior-posterior trim lines of thermoformed ankle-foot orthoses (AFO). It is hypothesized that the AFO with the most anterior trim line will prevent the most plantar flexion during loading response (the first 10% of the gait cycle)and prevent the most dorsiflexion at terminal stance (from 30 to 50% of the gait cycle) as compared to the non-device condition. This will be evidenced by the sagittal plane ankle motion and ground reaction force magnitude and location during loading response and terminal stance. Additionally, the angular velocity of knee flexion will increase during these same periods. By contrast, as the trim lines are moved more posterior this will result in lowering the effective stiffness of the device which will result in progressive increases in dorsiflexion and allow increasing amounts of knee flexion during terminal stance.

Conditions

  • Lower Extremity Biomechanics

Sponsors & Collaborators

  • Southern California Institute for Research and Education

    lead OTHER

Principal Investigators

  • Dana D. Craig, MA · VA Long Beach Healthcare System

Eligibility

Min Age
18 Years
Max Age
40 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2012-12-31
Primary Completion
2015-03-31
Completion
2017-06-30

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01865682 on ClinicalTrials.gov