Knee Indentation for Soft Tissues Mechanical Characterization and Modeling (KneeDent)
Indentation for the Mechanical Characterization of Soft Tissues in Contact With a Knee Orthosis: Towards Simulation of the Leg-Orthosis Interface.
Knee osteoarthritis is a common cause of disability, affecting more than 650 million people aged 40 and over worldwide in 2020. To relieve pain and improve mobility, some patients use knee orthoses . However, the effectiveness of these devices is not universally agreed upon, and users report widely varying levels of satisfaction.
This study aims to understand how the body responds to these orthoses from a biomechanical perspective, and in particular to quantify the interactions with soft tissues (skin, adipose tissue and muscles). To better understand this interaction, the authors propose to characterize soft tissue behavior on an individual basis using an indentation technique. In practice, this involves pressing on the soft tissues with an ultrasound probe to measure their stiffness at the interface between the leg and the orthosis.
Studieöversikt
Status
Betingelser
Intervention / Behandling
Studietyp
Inskrivning (Faktisk)
Fas
- Inte tillämpbar
Kontakter och platser
Studieorter
-
-
Ille-et-Vilaine
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Bruz, Ille-et-Vilaine, Frankrike, 35170
- Ens Rennes
-
-
Deltagandekriterier
Urvalskriterier
Åldrar som är berättigade till studier
- Vuxen
- Äldre vuxen
Tar emot friska volontärer
Beskrivning
Inclusion Criteria
Participant whose skin is intact on at least one of the two legs, in the tested area.
Participant able to understand simple instructions, conditioning guidelines, and to provide informed consent.
Adult over the age of 50, not under guardianship. Participant having signed the study participation consent form.
Non-inclusion Criteria
Persons covered by articles L. 1121-5 to L. 1121-8 and L. 1122-1-2 (minors, protected adults, etc.) Skin lesions, inflammation, or acute local pain on the tested leg. Neuromuscular pathology preventing controlled muscle contraction. Joint pain preventing the performance of everyday activities (e.g., walking, rising from a chair, climbing stairs…).
Studieplan
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Grundläggande vetenskap
- Tilldelning: N/A
- Interventionsmodell: Enskild gruppuppgift
- Maskning: Ingen (Open Label)
Vapen och interventioner
Deltagargrupp / Arm |
Intervention / Behandling |
|---|---|
|
Experimentell: Knee indentation
under different level of thigh and shank muscles contraction, we indent specific zones of the knee region to assess its stiffness and define a mechanical model of response for knee orthosis design
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we push the soft tissue in the indentation zone with an instrumented elastographic probe, allowing to assess force vs tissue thickness.
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Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
force-displacement curves
Tidsram: through study completion, an average of 1 year
|
Using the force below and displacement below, this a construction of the relative displacement with regard to the applied force
|
through study completion, an average of 1 year
|
Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
Indentation force (N)
Tidsram: through study completion, an average of 1 year
|
Force being applied by the indenter on the zone to be indented
|
through study completion, an average of 1 year
|
|
Displacement (mm)
Tidsram: through study completion, an average of 1 year
|
using motion capture, this is the assessment of the relative displacement of the probe with regard to the resting position during an indentation
|
through study completion, an average of 1 year
|
|
Height (m)
Tidsram: through study completion, an average of 1 year
|
Height of the subject, measured with a standard ruler
|
through study completion, an average of 1 year
|
|
Weight (kg)
Tidsram: through study completion, an average of 1 year
|
measured with a standard scale
|
through study completion, an average of 1 year
|
|
Muscle activity (mV)
Tidsram: through study completion, an average of 1 year
|
from the main flexors and extensors of the thigh, using EMGs
|
through study completion, an average of 1 year
|
Samarbetspartners och utredare
Samarbetspartners
Studieavstämningsdatum
Studera stora datum
Studiestart (Faktisk)
Primärt slutförande (Faktisk)
Avslutad studie (Faktisk)
Studieregistreringsdatum
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Första postat (Faktisk)
Uppdateringar av studier
Senaste uppdatering publicerad (Faktisk)
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Mer information
Termer relaterade till denna studie
Andra studie-ID-nummer
- InriaRennes
- Étude N°26.00181.001002 (Annan identifierare: Comité de protection des personnes Ile de France III)
Plan för individuella deltagardata (IPD)
Planerar du att dela individuella deltagardata (IPD)?
Läkemedels- och apparatinformation, studiedokument
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