Cerebral Palsy
Conditions
Keywords
children, medial gastrocnemius muscle
Brief summary
Children with cerebral palsy present early in the childhood altered muscular properties, as soon as structural or stiffness. In the gastrocnemius muscle, altered muscular properties are characterized by short muscle belly length and increased stiffness which contribute to contracture and limiting joint range of motion. This study assess efficacy of an acute high intensity and long-time stretching session of plantarflexors muscle on their viscoelasticity properties and maximal dorsiflexion angle gain. Single stretching session is characterized by high intensity and long time (5 minutes).
Interventions
OTHERmeasurement evaluated with an isokinetic dynamometer
measurement of the maximum dorsiflexion angle in degrees evaluated on an isokinetic dynamometer
OTHERmeasurement evaluated with an 2D ultrasound
* simultaneous recording of force torque, joint angle and myotendinous junction displacement in 2D ultrasound during 5 passive mobilization cycles of ankle flexion-extension at very low speed * recording of static images in 2D ultrasound representing the proximal insertion of the gastrocnemius muscle in the internal condyle of the femur, the myotendinous junction.
OTHERassessment of the level of discomfort
visual analogue scale (0 = no discomfort and 10 = maximal discomfort)
Sponsors
Centre Hospitalier Universitaire de Saint Etienne
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
OTHER
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
6 Years to 14 Years
Healthy volunteers
No
Inclusion criteria
* Children with cerebral palsy of the spastic type * Children with a maximum dorsal ankle flexion amplitude limitation of less than 10°.
Exclusion criteria
* Children who have undergone surgery on the lower limbs. * Children with a botulinum toxin injection and/or a series of elongation casts for less than three months. * Children with ongoing analgesic treatment
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| slope of the torque curve force-ankle joint angle in the joint area -25° plantar flexion/maximum dorsal flexion | baseline |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Maximum dorsal flexion angle of ankle, knee in maximum extension position | at 5 minutes | — |
| slope of the force-displacement torque curve myotendinous junction of the Sural Triceps in the articular sector -25° plantar flexion/maximum dorsal flexion | at 5 minutes | — |
| lengths of the musculotendinous unit of the Triceps Sural muscle, the muscular body of the gastrocnemius muscle and the Achilles tendon in cm measured at rest, knee in maximum extension position, ankle angle in neutral plantar/dorsal flexion position. | at 5 minutes | — |
| visual analogue scale of discomfort | at 5 minutes | 0 = not discomfort and 10 = maximal discomfort |
Countries
France
Outcome results
None listed