Flexible Flatfoot
Conditions
Brief summary
Determine the effects of non-custom made foot orthoses on the kinematics, muscle activity and joint contact force after fatigue and compare the rate of fatigue in flexible flat foot with and without foot orthoses
Interventions
DEVICENon-custom made foot orthoses
Foot orthoses is an orthotic devices which are used to support arch and rear-foot and put it in a good alignment.
Sponsors
National Yang Ming Chiao Tung University
Study design
Observational model
OTHER
Time perspective
CROSS_SECTIONAL
Eligibility
Sex/Gender
ALL
Age
20 Years to 50 Years
Healthy volunteers
No
Inclusion criteria
* Bilateral flexible flatfoot( navicular bone drop greater than 10 mm)
Exclusion criteria
* History of foot and ankle surgery, inflammatory joint disease * History of lower extremity injury in six months * Known pathological or neurological disorders that could affect gait pattern
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Lower extremities kinetic | 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed, after one week, 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed | Three dimensional motion data were collected using a Vicon camera system during walking. Using motion capture system data to calculate the hip, knee internal/external rotation moment and ankle inversion/eversion moment via inverse dynamics method. |
| Peak and average amplitude during stance phase | 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed, after one week, 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed | EMG data were collected using a Delsys, and Biopac EMG system during walking. Tibialis anterior/Peroneal longus/Abductor hallucis longus muscle activity were measured by electromyography (EMG). |
| Lower extremities kinematic | 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed, after one week, 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed | Lower limbs alignment, including hip, knee and ankle joints. Using motion capture system data to calculate the joint angles. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Inter-joint contact force | 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed, after one week, 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed | Hip, knee ,and ankle inter-joint contact force: Anybody modeling system is used to model the inter-joint contact force |
| Peak and average amplitude during stance phase | 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed, after one week, 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed | EMG data were collected using a Delsys, and Biopac EMG system during walking. Medial gastrocnemius/Rectus femoris/Bicep femoris muscle activity were measured by EMG. |
| Lower extremities kinetic | 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed, after one week, 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed | Three dimensional motion data were collected using a Vicon camera system during walking. Using motion capture system data to calculate the hip, knee flexion/extension, adduction/abduction moment and ankle dorsiflexion/plantarflexion, and adduction/abduction moment via inverse dynamics method. |
| Time of completed fatigue protocols | 1 minutes after fatigue protocol completed | Time of completed the course will be recorded. |
| Lower extremities kinematic | 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed, after one week, 10 minutes before fatigue protocol start, 5 minutes after fatigue protocol completed | Three dimensional kinematics were collected using a Vicon camera system during walking. Lower limbs alignment, including hip, knee and ankle joints. Using motion capture system data to calculate the joint angles. |
Countries
Taiwan
Outcome results
None listed