Quantitative Gait Analysis for Clinical Decision Making

Joint Disease Clinical Trial

Official title:

Quantitative Gait Analysis for Clinical Decision Making

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00223353
• Other study ID #: 978-0011-149
• Status: Completed
• Phase: N/A
• First received: September 13, 2005
• Last updated: February 15, 2012
• Start date: November 1998
• Est. completion date: August 2011

Study information

• Verified date: February 2012
• Source: The University of Texas Health Science Center at San Antonio
• Contact: n/a
• Is FDA regulated: No
• Health authority: United States: Institutional Review Board
• Study type: Observational

Clinical Trial Summary

The overall purpose of this study is to develop an improved gait analysis system for the real time acquisition, calculation and interpretation of joint kinematic and kinetic information using linked segment body model animation to display and visually depict deviations from normal motion and joint function.

Patients referred to the laboratory for clinical gait analysis are invited to participate in the project. If interested, subjects are informed by a study investigator of the study goals, procedures, risks and any benefits. A study investigator is responsible for obtaining informed consent. Data from normal subjects are used to establish a normative database. Data from other subjects contributes to the relevant databases of different disorders.

Description:

The overall purpose of this study is to develop an improved gait analysis system for the real time acquisition, calculation and interpretation of joint kinematic and kinetic information using linked segment body model animation to display and visually depict deviations from normal motion and joint function.

Subjects will be studied using the standard protocol used for patient evaluations in the Rehabilitation Medicine Human Motion Laboratory (GBO13 V AH). The standard protocol includes the routine collection of kinematic data, kinetic data, foot pressure data and, in selected cases, electromyography information. All collected raw data will ultimately be processed for relevant biomechanical parameters and utilized to build either a Normative Database or Non-Normative Database from which selected cases maybe extracted for teaching purposes, pilot data or software development. The project is not designed to test specific hypothesis and as such statistical analysis are not planned.

To acquire kinematics data, infrared reflective markers are taped over the joints of the lower extremities, trunk, and arms. The reflective markers are used in conjunction with the optoelectronic kinematic motion analysis system (Vicon) to allow acquisition of 3D motion data for the limb and trunk segments of subjects. Joint kinetics are determine from ground reaction forces measured by force plates embedded into the floor of the gait laboratory and requiring no specific subject setup. Foot pressure data is obtained by Fscan. Mylar pressure sensitive strips are placed in the shoe or residual limb. The strip is connected to a datalogger and battery pack that will be put on a belt and worn over the shoulder or on the waist. When electromyographic data is required, surface electrodes are placed over the motor point regions of selected muscles of the lower extremities.

After placement of markers and recording electrodes, the subjects will be instructed to walk down the gait lab runway over the force platform. Simultaneous kinematic, EMG and force plate data is collected. Between 3 and 10 strides of data are collected depending on the degree of variability in the gait pattern. When assistive devices ( canes etc.) or orthotic devices are used, the subject may be asked to ambulate with and without the gait aid.

Since the patients recruited for this study will have abnormalities in their gait, the most significant risk is falling. Therefore, subjects will be screened to ensure that they can ambulate independently over level ground. During testing, standby assistance will be present to help subjects in cases of balance loss. The risks for normal subjects are negligible.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 100
• Est. completion date: August 2011
• Est. primary completion date: August 2011
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Both
• Age group: N/A and older

Eligibility

Inclusion Criteria:

• Since it is desirable to include the spectrum of gait disorders that are typically encountered in clinical practice, inclusion/exclusion criterion for patients are limited.

Exclusion Criteria:

• Patients must be able to walk independently with or without assistive devices.

• Normal subjects must have no history of neuromuscular or musculoskeletal disorders that interfere with ambulation.

Study Design

N/A

Related Conditions & MeSH terms

• Joint Disease
• Joint Diseases
• Musculoskeletal Equilibrium

Intervention

Other:
• Prosthetics, Orthotics and Physical Therapy
Gait Analysis.

Locations

Country	Name	City	State
United States	South Texas Veterans Healthcare System	San Antonio	Texas

Sponsors (1)

Lead Sponsor	Collaborator
The University of Texas Health Science Center at San Antonio

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Gait Parameters		Not a clinical trial. Study closed to enrollment.	No
Secondary	Balance		Not a clinical trial. Study closed to enrollment.	No