Guest Lecutre Flashcards
What are the 4 things that orthosis deigns must do
• Control the boney segments of the lower extremity
• Meet musculotendinous objectives
• Meet motor control objectives
• Meet functional objectives
What is A device that is attached or applied to the external surface of the body to improve function, restrict or enforce motion, or support a body segment.
Orthoses
What is the passive force during normal gait
Ground reaction force
There are 4 basic functions that are necessary for normal gait and orthoses attempt to restore parts of these .. what are the 4 things
o Weight Bearing Stability
o Stance Limb Progression
o Shock Absorption
o Energy Conservation
Which rocker initiates swing limb advancement
Toe rocker
When is the heel rocker established
Loading response
Where ist he ground reaction force during LR
Anterior to hip (extensor moment)
Posterior to knee (flexor moment)
Where is the ground reaction force in midstance progression
In front of ankle and knee and posterior to hip
What are the x Pathological Patterns/Functional Categories for pathological gait
-Structural Impairment
-Motor Unit Insufficiency
-Peripheral Sensory and Motor Impairment
-Central Control Dysfunction
What are the contributing pathologies for structural impairments for pathological gait
o Contractures
o Skeletal Deformity
o Musculoskeletal Pain
Motor unit insufficiency for pathological gait is from ___ weakness and what kind of disorders and pathology is common with it
Mm
LMN disorders (polio , guillain barre)
MM pathology (mm dystrophy)
Peripheral sensory and motor impairment for pathological gait is from what 3 things
• Cauda Equina Spinal
Cord Injury
• Spina Bifida
• Acute Trauma
What are some central control dysfunctions that could affect gait leading to pathological gaits
o Upper motor neuron
lesions
o Brain lesions
At the ankle .. what can significantly block stance limb progression
15* PF contracture
Skeletal malalignment can lead to what for pathological gait
Motion errors or abnormal movement during gait
If someone has MSK pain what will that lead to during gait
Protective responses leads to shortened stance limb period
____ ___ is the clinical penalty of having fewer motor units available to generate the forces needed for walking
Muscular weakness
T/F; if a patient has a motor unit insufficiency leading to pathological gait can -Patients can substitute for local weakness since sensation and control have been maintained
T
T/F : is there sensory loss with peripheral sensory and motor impairment for pathological gait
Yes so p[atients cant substitute
Patient with peripheral sensory and motor impairment problems during gait have impaired what
-mpaired Sensation delays awareness of floor contact
If a patient has a delayed heel rise in terminal stance what is absent or weak
PF
What is the different in othortic dosing for a open kinetic chain problem vs a closed kinetic chain problem
OKC- require much less rigid devices
CKC- must be able to resist the tri planar forces that occur thru the subtalar joint
If ur ground reaction force is posterior to the knee during midstance what does that implicate
Weak PF bc it is suppose to be anterior to the knee
What orthotic would u select if a patient has severe pes Plano valgus foot , intermittent toe walking and low tone
Supramalleolar
