Comparison Between Three Types of Prosthetic Feet

NCT ID: NCT03046394

Last Updated: 2017-05-04

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

1 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-02-06

Study Completion Date

2017-05-03

Brief Summary

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One Solid Ankle Cushion Heel (SACH) and two Dynamic Elastic Response (DER) prosthetic feet will be tried six times in random order by the patient. The patient will be an active prosthetic foot user who walks several kilometers per day and was amputated at the trans-tibial level because of injury. Gait pattern will be rated in comparison with the patient's previous prosthetic foot by a physiatrist, physiotherapist, prosthetist and the patient. One-leg standing and 10-meter walking tests will also be performed.

Detailed Description

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The prosthetic feet will be: one SACH foot (by Otto Bock - foot C, advertised for activity category 1) and two DER feet (Dynamic Motion by Otto Bock - foot B, advertised for activity category 2-3; and Triton by Otto Bock - foot A, advertised for activity category 3-4).

All the prosthetic feet are of the same size and chosen for the patient's weight. They will be covered so that neither the patient nor professionals will be able to see which prosthetic foot is being used.

The study is blinded because the prosthetist designated for changing the prosthetic feet will be the only one who will know which prosthetic is being used. The orientational sample size calculation and the randomisation plan were prepared by a statistician.

The first trial will be performed using the patient's own prosthetic foot in order to establish a baseline. The patient will then have to to compare the prosthetic feet with his own existing prosthetic foot and rate the ability to walk on even terrain (100m), uneven terrain (grass, 100m), decline and incline (i.e., slope), and up and down the stairs (one floor) on a five-point Likert-type scale (-2 much worse, -1 slightly worse, 0 the same, 1 slightly better, 2 much better). After each trial he will also perform the one-leg standing test (with three repetitions) and the 10-meter walking test. Before each trial, the patient will be given 15 minutes for adaptation to each new prosthetic foot without the presence of the assessors.

The three expert observers will be: a physical and rehabilitation medicine specialist physician, a certified prosthetist-orthotist, and a physiotherapist. Each has got over 20 years of experience in rehabilitation of patients after amputation and observation of their gait. They will be blind to the currently used prosthetic foot. They will follow the patient and assess his walking using the same rating scale in comparison with the initial trial as the patient.

Conditions

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Amputation; Traumatic, Leg, Lower, Between Knee and Ankle

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

SEQUENTIAL

Primary Study Purpose

DEVICE_FEASIBILITY

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors

Study Groups

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C-SACH

All the interventions will be administered to the patient in this single-subject trial, each 6 times

Group Type ACTIVE_COMPARATOR

C-SACH

Intervention Type DEVICE

Solid Ankle Cushion Heel by Otto Bock, advertised for activity category 1

B-DER

All the interventions will be administered to the patient in this single-subject trial, each 6 times

Group Type ACTIVE_COMPARATOR

B-DER

Intervention Type DEVICE

Dynamic Motion by Otto Bock, advertised for activity category 2-3

A-DER

All the interventions will be administered to the patient in this single-subject trial, each 6 times

Group Type ACTIVE_COMPARATOR

A-DER

Intervention Type DEVICE

Triton by Otto Bock, advertised for activity category 3-4

Interventions

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C-SACH

Solid Ankle Cushion Heel by Otto Bock, advertised for activity category 1

Intervention Type DEVICE

B-DER

Dynamic Motion by Otto Bock, advertised for activity category 2-3

Intervention Type DEVICE

A-DER

Triton by Otto Bock, advertised for activity category 3-4

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* active prosthetic foot user who walks several kilometers per day
* amputation at the trans-tibial level \>5 years ago

Exclusion Criteria

* other medical problems
Minimum Eligible Age

20 Years

Maximum Eligible Age

60 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

No

Sponsors

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University Rehabilitation Institute, Republic of Slovenia

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Helena Burger, MD, PhD

Role: PRINCIPAL_INVESTIGATOR

University Rehabilitation Institute, Republic of Slovenia

Locations

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University Rehabilitation Institute, Republic of Slovenia

Ljubljana, , Slovenia

Site Status

Countries

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Slovenia

Other Identifiers

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URIS201701

Identifier Type: -

Identifier Source: org_study_id

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