- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT07613502
Bio Leg: Advancing Mobility (BAM)
Adaptive Mobility Technology: A Comparative Study of C-Leg and Bio Leg
Panoramica dello studio
Stato
Intervento / Trattamento
Descrizione dettagliata
Although microprocessor-controlled knees (MPKs) such as the C-Leg have demonstrated clear benefits over non-microprocessor-controlled prosthetic knees, it remains unclear whether powered knee assistance provides additional advantages in movement quality, metabolic efficiency, and limb loading during walking adaptability tasks.
This study directly addresses this gap by comparing mobility using the Bio Leg to mobility with the C-Leg using outcome measures that reflect real-world mobility challenges.
By generating objective evidence on whether powered knee assistance improves biomechanics, efficiency, and stability beyond that achieved with an established MPK, this study will inform prosthetic prescription, rehabilitation strategies, and payer decision-making. Given the growing population of individuals living with transfemoral amputation, identifying technologies that support safe, efficient, and confident mobility has important implications for community participation, long-term musculoskeletal health, and quality of life.
This study uses a within-subject repeated-measures design in which each participant is assessed under two conditions: current prosthesis and the Bio Leg prosthesis. All primary and secondary outcomes will be analyzed as within-participant differences, with each participant serving as their own control.
Tipo di studio
Iscrizione (Stimato)
Fase
- Non applicabile
Contatti e Sedi
Contatto studio
- Nome: Emily J Fox, PT, DPT, MHS, PhD
- Numero di telefono: 904-742-2500
- Email: ejfox@phhp.ufl.edu
Backup dei contatti dello studio
- Nome: Joshua C Encarnacion, BS
- Numero di telefono: 904-345-8969
- Email: Joshua.Encarnacion@brooksrehab.org
Luoghi di studio
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Florida
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Jacksonville, Florida, Stati Uniti, 32216
- Brooks Rehabilitation
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Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
- Adulto
- Adulto più anziano
Accetta volontari sani
Descrizione
Inclusion Criteria:
- Adults 40 to 70 years of age
- Unilateral transfemoral amputation > 1 year
- K3 or K4 ambulator and able to walk with no greater assistances than a single point cane
- Current microprocessor-controlled prosthesis (C-leg) user with > 6 months experience and able to walk without a device of using a single point cane
- Able to give informed consent
Exclusion Criteria:
- Severe cardiovascular condition or other disease limiting study participation
- Skin lesions or wounds, acute or unstable fracture, diagnosis of osteoarthritis or bone impairments affecting safe participation in walking activities
- Residual limb dysfunction (i.e. joint contracture) limiting mobility or study participation
- Pain that limits walking of participation in walking activities
- Current participation in rehabilitation to address walking function
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Trattamento
- Assegnazione: Non randomizzato
- Modello interventistico: Assegnazione incrociata
- Mascheramento: Nessuno (etichetta aperta)
Armi e interventi
Gruppo di partecipanti / Arm |
Intervento / Trattamento |
|---|---|
|
Nessun intervento: C-Leg
The first assessment will involve testing the participant with their current C-leg microprocessor prosthesis.
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Sperimentale: Bio Leg
After the Bio Leg fitting, the participant will exclusively wear the Bio Leg knee component for an acclimation period that will be a minimum of 4 weeks and up to 6 depending on participant's schedule and comfort/ease of using the device.
Each participant will complete a minimum of 2 and up to 4 physical therapy sessions during the acclimation period.
These physical therapy sessions will involve standard physical therapy training for use of a prosthetic limb after amputation.
Following the acclimation period, the participant will complete the second assessment, which will mirror the first assessment.
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After completing biomechanics and clinical testing at Pre Assessment with their C-Leg, participants will be fitted with a Bio-Leg prosthesis at the prosthetist clinic.
The participant will train and use the Bio-Leg prosthesis during a 4-6 week acclimation period.
The participant will then complete the same biomechanics and clinical testing at Post Assessment.
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Change in 6-Minute Walk Test (6MWT)
Lasso di tempo: Baseline, 4-6 weeks
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The distance that a patient should walk based on their height, weight, age, and gender.
Performance assessment of walking endurance for 6 minutes.
An increase in the number of meters walked during this assessment reflects an improvement in walking endurance.
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Baseline, 4-6 weeks
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Change in Interlimb Symmetry (Ground Reaction Forces)
Lasso di tempo: Baseline, 4-6 weeks
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A direct measure of vertical ground reaction forces during the rising phase of a sit-to-stand task (measured in Newtons) using standard force plates embedded in the floor.
Increased symmetry in ground reaction forces between the lower limbs reflects improved equalization of weight distribution between the limbs.
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Baseline, 4-6 weeks
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Change in Metabolic Efficiency (O2/kg/m)
Lasso di tempo: Baseline, 4-6 weeks
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A direct measure assessed during the six-minute walk test.
Metabolic efficiency is determined by the energy cost of transport, defined as oxygen consumption per unit body weight and distance walked (O₂/kg/m), which accounts for the individual's weight and walking speed.
Improved metabolic efficiency reflects enhanced oxygen delivery and utilization during walking.
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Baseline, 4-6 weeks
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Collaboratori e investigatori
Sponsor
Collaboratori
Investigatori
- Investigatore principale: Emily J Fox, PT, DPT, MHS, PhD, University of Florida & Brooks Rehabilitation
Studiare le date dei record
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Inizio studio (Stimato)
Completamento primario (Stimato)
Completamento dello studio (Stimato)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Effettivo)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Effettivo)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Altri numeri di identificazione dello studio
- IRB202600203
Piano per i dati dei singoli partecipanti (IPD)
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Informazioni su farmaci e dispositivi, documenti di studio
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Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .
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