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Clinical Trial Details — Status: Terminated

Administrative data

NCT number NCT03575975
Other study ID # Ankle XMA Project
Secondary ID
Status Terminated
Phase
First received
Last updated
Start date May 30, 2018
Est. completion date April 16, 2020

Study information

Verified date May 2021
Source Georgia Institute of Technology
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

Patients who have had a total ankle joint replacement surgery typically have limited movement in their ankles possibly due to the fact that commonly used ankle joint prosthetic devices only allow limited axes of motion. This study will evaluate the ability of a Scandinavian Total Ankle Replacement (STAR) mobile-bearing prosthesis and INBONE 2 fixed-bearing prosthesis to restore triplanar motion in the tibiotalar (ankle) joint following a surgical arthroplasty (total joint replacement) procedure. 3D X-ray video motion analysis will be utilized to quantify range of motion measurements in two groups of ankle prosthesis users and a group of matched control participants.


Description:

15 study participants will include those using a Stryker STAR prosthesis and a Wright Medical INBONE 2 prosthesis and a group of matched control subjects. CT scans of lower limb anatomy (ankle-foot complex) will be obtained for all subjects to be converted into 3D bone surface models for use in the joint motion tracking software. Each participant will participate in one day of data collection with an X-Ray Motion Analysis (XMA) system. High-speed biplanar XMA system will capture video images of the skeletal motions within the foot-ankle complex during normal movement. Subjects will walk and perform controlled movements in the capture volume within the XMA system. Following data collection, the 3D bone surface models will be mapped to the sagittal (side view), coronal (front view), and axial (top view) plane skeletal motions demonstrated in the collected x-ray videos. Motion tracking data will then be used to accurately animate the 3D bone models to demonstrate the active range of ankle-foot joint motions during voluntary movement and gait. Resulting range of motion measurements in dorsiflexion/plantarflexion, internal/external rotation, and inversion/eversion will be used to determine the extent to which normal motion in the ankle-foot complex has been restored in ankle prosthesis users.


Recruitment information / eligibility

Status Terminated
Enrollment 9
Est. completion date April 16, 2020
Est. primary completion date April 16, 2020
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years to 79 Years
Eligibility INCLUSION CRITERIA: - Between 18 to 79 years of age. Additional Inclusion criteria for mobile-bearing ankle prosthesis user group: - Able to walk independently with their prosthesis at different self-selected speeds - Implanted with Stryker Scandinavian Total Ankle Replacement (STAR) prosthesis at least one year prior to enrollment - Pain free and radiologically normal - Able to walk at preferred walking speed without an assistive device (e.g., cane, crutches, etc.) Additional Inclusion criteria for control group: - Within 3 years of age of one of the mobile-bearing ankle prosthesis user participants - Same gender as the matched mobile-bearing ankle prosthesis user participant - Not have a history of major musculoskeletal injuries - Not have a history of major neuromuscular injuries Additional Inclusion criteria for fixed-bearing ankle prosthesis users: - Able to walk independently with their prosthesis at different self-selected speeds - Implanted with INBONE 2 prosthesis at least one year prior to enrollment - Pain free and radiologically normal - Able to walk at preferred walking speed without an assistive device (cane, crutches, etc.) EXCLUSION CRITERIA: - Have dementia or an inability to give informed consent - Have significant or chronic loss of hip or knee joint motion - Have any subtalar or hindfoot fusion - Have a history of dizziness and/or balance problems - Have had any additional x-ray exposures in the past year that would put beyond the recommended annual dose for the study - Are pregnant - Exhibit evidence of polysubsidence (implant loosening) - Exhibit evidence of a broken implant

Study Design


Intervention

Device:
Total Ankle Replacement Prosthesis
Comparison of functional range of motion in users of Stryker Scandinavian Total Ankle Replacement (STAR) prosthesis to users of INBONE 2 Total Ankle Replacement prosthesis and to matched controls with intact ankle joints.

Locations

Country Name City State
United States Georgia Institute of Technology Atlanta Georgia

Sponsors (3)

Lead Sponsor Collaborator
Georgia Institute of Technology Emory University, Stryker Orthopaedics

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Tibiotalar Joint Angle Kinematics 3D range of motions of the tibiotalar (upper ankle) joint were recorded and analyzed using a biplanar x-ray motion analysis system. In particular, joint ranges of motion were tested in terms of dorsiflexion-plantarflexion, internal-external rotation, and inversion-eversion angles. 1 year
Secondary Tibiotalar Joint Linear Translation Kinematics 3D range of linear motions of the tibiotalar (upper ankle) joint were recorded and analyzed using a biplanar x-ray motion analysis system. In particular, linear joint ranges of motion were tested in terms of the anteroposterior, mediolateral, and superior-inferior axes. 1 year
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