- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04524845
Study of Biomechanical Parameters of Unloading Braces Used in the Treatment of Knee Osteoarthritis (BIOoSE) (BIOoSE)
Osteoarthritis is a chronic disease affecting millions of people worldwide, and knee is the second most affected site. Knee osteoarthritis is characterized by knee pain, loss of motion, disability, and muscle weakness, all factors contributing to gait alterations, and impacting greatly the patients quality of life. In the absence of curative treatment, pharmacological and non-pharmacological symptomatic treatments are prescribed to maintain this QoL, and therefore delay surgery to more appropriate window of opportunity later in life.
The aim of the study was to investigate the acute effects of three braces, using different unloading strategies, on gait kinematic and kinetic parameters, as well as pain in patients with medial knee ostoeoarthritis.
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
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Saint-Etienne, France, 42270
- Saint-Etienne Jean Monnet University
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-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- unilateral medial KOA classified II or III on the Kellgren-Lawrence scale
- varus misalignment with a joint space of at least two finger breadths
- pain level equal or higher than 30 mm on a 100 mm visual analog scale
- informed written consent
Exclusion Criteria:
- limited ability to walk
- normoaxial knee alignment
- intra-articular injection of a local treatment including corticosteroids in the 3 months or hyaluronic acid in the 6 months preceding its inclusion or analgesic or NSAID treatment with a wash-out period equal to 5 half-lives of the drug concerned
- undergoing physiotherapy
- cognitive disorders or behavioral disorders (opposition, agitation, dementia)
- arteriopathy of the lower limbs
- skin disorders contraindicating the wearing of rigid orthotics
- severe varicosity preventing the regular wearing of unloading brace
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Rebel Reliever
Rebel Reliever (RR) (Thuasne, Levallois Perret, France) with bilateral rigid frames and two hinges.
The valgus correction was set by adjusting the medial and lateral frame lengths to a difference of two or three points as dictated by the participant's feeling and comfort.
Six straps maintained the brace in place
|
Rebel Reliever (RR) (Thuasne, Levallois Perret, France)
|
Experimental: Action Reliever
Action Reliever (AR) (Thuasne, Levallois Perret, France) made mainly from textile.
Upper and lower straps were adjusted to the participant's feeling and comfort.
|
Action Reliever (AR) (Thuasne, Levallois Perret, France)
|
Active Comparator: Unloader One
Unloader One (UO) (Össur, Reykjavik, Iceland), with unilateral frame and one hinge.
Upper and lower straps were adjusted to the setting recommended by the fitting instructions and confirmed by the participant's sensation.
|
Participants underwent one session of gait analysis. The experimental protocol was divided in four conditions, the control condition without brace (NO), and then three conditions with the different braces tested in a randomized order. For each condition, the participant was fitted with the brace by the same experimenter and equipped with 19/20 retro-reflective markers (without/with brace) on the pelvis and the investigated leg for motion analysis. After a short recording in a fixed standing position (static trial), each participant carried out at least three barefoot walking trials of a few meters long at a self-selected pace. The walking trial was validated if a complete gait cycle occurred on the two 90cm x 90 cm force plates recording the ground reaction forces. After each condition, the participant had to assess knee pain. |
No Intervention: No orthosis
Control condition without brace
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Knee Adduction Moment
Time Frame: Day : 1
|
Main parameter determined from the force platforms: - Position of the center of gravity By coupling the techniques of kinematic measurement and ground reaction force, we obtain the Moment of Adduction (or KAM) when walking |
Day : 1
|
Knee Adduction Moment
Time Frame: Day : 1
|
Main parameter determined from the force platforms: - Impact force and vertical propulsive force. By coupling the techniques of kinematic measurement and ground reaction force, we obtain the Moment of Adduction (or KAM) when walking |
Day : 1
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Perceived pain
Time Frame: Day: 1
|
The pain is self-assessed by the patient using a visual analogue scale graduated from 0 to 10: the analogue scale is presented to the patients, who will mark the level of pain felt during the works under each of the study conditions.
|
Day: 1
|
Adduction/abduction angles
Time Frame: Day: 1
|
Adduction/abduction angles (in particular A1 and A2, corresponding to the two vertical GRF maxima, as well as the adduction angle during standing (A0)), were measured (deg) under each condition.
|
Day: 1
|
Impact and propulsive reaction force of the ground
Time Frame: Day: 1
|
The impact force and the propulsive reaction force of the ground (N / kg) were measured during walking under each condition.
F1 corresponds to the load response peak and F2 to the terminal stance peak during gait,
|
Day: 1
|
Step length
Time Frame: Day: 1
|
The length of the step (m) was measured during walking under each condition.
|
Day: 1
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Walking speed
Time Frame: Day: 1
|
The walking distance (km/h) was measured during walking under each condition.
|
Day: 1
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Satisfaction related to the device
Time Frame: Day: 1
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A satisfaction survey is filled by the patient in order to assess the positioning of unloading brace, comfort, esthetic and global satisfaction of devices
|
Day: 1
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Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Thierry Thomas, MD, Chu Saint-Etienne
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- EC25
- 2017-A01963-50 (Other Identifier: ANSM)
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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