Gait-TF Flashcards
What is Lateral Bending of the Trunk?
Excessive bending laterally from the midline, generally to the prosthetic side.
What are the prosthetic causes of Lateral trunk bending?
Prosthesis too short or long Improperly shaped Lateral wall High Medial wall Prosthesis aligned in abduction Excessive foot outset Pain at distal lateral femur
Why does a improperly shaped lateral wall produce the lateral bend deviation?
Fails to support the femur
Why does a high medial wall cause the lateral bend deviation?
May cause pain and the patient to lean away from the discomfort
Why does an abducted socket produce lateral bend deviation?
Causes wide-based gait
What are amputee causes of lateral trunk bend?
Inadequate balance Abduction contracture Over-sensitive residual limb to pain Very Short limb-no lever arm Habit
What is abducted gait?
A very wide base with the prosthesis held away from the midline at all times
what are prosthetic causes of abducted gait?
Prosthesis too long Prosthesis to abducted High medial wall Improper lateral wall shape Pelvic band positioned far away from the patient's body Pain at distal lateral femur
What are amputee causes of abducted gait?
Abduction contracture
Habit
Anterior pelvic tilt
What is circumducted gait?
Swinging the prosthesis laterally in a wide arc during swing phase.
What are the prosthetic causes of a circumducted gait?
Prosthesis too long Knee too stable Excessive resistance to knee flexion Extension bias too strong Medial brim pressure inadequate suspension
What are amputee causes of circumducted gait?
Abducted contracture
Lacks confidence in leg
Habit
What is Vaulting?
A rising on the toe of the normal foot permitting the amputee to swing the prosthesis through with little knee flexion
What are the prosthetic causes of vaulting?
Prosthesis too long Inadequate socket suspension Limb discomfort Excessive resistance to knee flexion Too much stability Extension bias too strong
What is the amputee cause of vaulting?
Habit
Fear of stubbing toe
Limb discomfort
What are the prosthetic causes of Rotation of the prosthetic foot on heel strike?
Too much resistance to plantarflexion by the bumper or heel wedge Too much toe out Socket too loose Tight medial/posterior wall angle Foot inset too far
What are the amputee causes of rotation of the prosthetic foot on the heel strike?
Extends the residual limb to vigorously at heel strike
Poor muscle control
What is uneven arm swing?
The arm on the prosthetic side held close to the body during locomotion
What are the prosthetic causes of uneven arm swing?
Improperly fitting socket-can cause discomfort
What are the amputee causes of uneven arm swing?
Bad balance
Fear and insecurity
Habit
What is uneven timing?
Steps of unequal duration, usually a very short stance phase on prosthetic side.
What are the prosthetic causes of uneven timing?
Improperly fitting socket
Weak extension aid or friction in knee
Alignment instability of knee
Insufficient initial socket flexion-for hip flexion contracture
Why would a weak extension aid or friction in knee cause uneven timing?
Excessive heel rise resulting in a prolonged swing-through.
What are the amputee causes of uneven timing?
Muscle weakness
Bad balance
Fear and insecurity
What is uneven heel rise?
The prosthetic heel rising quite markedly and rapidly when the knee is flexed at beginning of swing phase.
What are the prosthetic causes of uneven heel rise?
Knee joint has insufficient friction
Inadequate extension aid
What are the amputee causes of uneven heel rise?
Using more power than neccessary to force the knee into flexion
What is terminal swing impact?
Rapid forward movement of the shank allowing the knee to reach maximum extension with too much force before heel strike
What are the prosthetic causes of terminal impact?
Insufficient knee friction
Knee extension aid too strong
Used or absent extension bumper
What are the amputee causes of terminal impact?
Amputee reassure himself that the knee is extended
What can instability of the prosthetic knee cause?
The amputee to fall
What are the prosthetic causes of knee instability?
Knee anterior to TKA line Insufficient initial flexion Plantarflexion resistance too strong Failure to limit dorsiflexion Increased Shoe heel height-causing anterior leaning pylon
What are the amputee causes of knee instability?
Weak hip extensors
severe hip flexion contracture
What is a medial whip?
When the heel travels medially on initial flexion at the beginning of swing phase
What is lateral whip?
The heel moves laterally
What are the prosthetic causes of whips?
Lateral- excessive internal rotation of knee or socket Rectus femoris channel too deep Medial-excessive external rotation of knee or socket Rectus femoris channel too shallow Socket too tight or poorly shaped Excessive valgus of knee Poor aligned toe-break-twisting toe-off Posterior/Medial wall too tight
What are the amputee causes of whips?
Habit
Weak Muscles
What is foot slap?
Too rapid descent of the anterior portion of the foot
What are the prosthetic causes of foot slap?
Plantarflexion resistance too soft
What are the amputee causes of foot slap?
Patient driving the foot into ground to ensure extesnion
What is drop-off?
A downward movement of the trunk as the body moves forward over the prosthesis
What are the prosthetic causes of drop-off?
Inadequate limitation of dorsiflexion Keel of SACH too short Toe break too far posterior Socket too anterior to foot Long stride on sound side
What is long prosthetic step?
The amputee takes a longer step with the prosthesis than the normal leg
What are the prosthetic causes of long prosthetic step?
Insufficient initial flexion in socket
What are the amputee causes of long prosthetic step?
Flexion contracture
What is excessive trunk extension?
The amputee creates an active lumbar lordosis
What are the prosthetic causes of excessive trunk extension?
Improperly shaped posterior wall
Insufficient initial flexion of socket
How can an improperly shaped posterior wall cause excessive trunk extension?
Causes forward rotation of the pelvis to avoid full weight-bearing on the ischium
What are the amputee causes of excessive trunk extension?
Flexor tightness Weak hip extensors Weak abdominal muscles Habit Bad balance Short residual limb
What are the prosthetic causes of pelvis rise?
Toe lever too long
Foot set in excessive plantarflexion
What are the prosthetic causes of pistoning?
Poor socket suspension
What are the prosthetic causes of inadequate or delayed heel rise?
Excessive mechanical resistance to knee flexion
Prosthesis aligned with too much stability
Limited pelvis rotation
What are the goals for initial contact?
Smooth controlled plantarflexion
Knee extension smooth
Equal step length
What are the goals for loading response?
Foot remains in the line of progression during plantarflexion
What are the goals for mid-stance?
Vertical pylon
Narrow-based gait-2 to 4 in
No excessive lateral trunk bend
What are the goals for terminal stance?
Center of gravity follows smooth arc without rise or fall of head
Normal step length on sound side without lumbar lordosis
What are the goals for pre-swing?
Hip, knee, foot swing through on line of progression
Smooth hip and knee flexion with quad-like control
Hell rise equal
Socket secure on limb
What are the goals for initial and mid-swing?
Center of gravity reaches the summit on its smooth arc, rhythmic path over foot
What are the goals for terminal swing?
Smooth and noiseless deceleration to full extension
Equal step length
Which gait deviations are seen during initial contact?
Knee instability
Unequal step length
Foot slap
What are the gait deviations seen during loading response?
Excessive foot rotation
What are the gait deviations seen during mid-stance?
Abducted gait
Lateral Trunk bend
Unequal toe rotation
What are the gait deviations seen during terminal stance?
Pelvis rise
Drop-off
Excessive lumbar lordosis
What are the deviations seen during pre-swing?
Medial/Lateral whip
Pistoning
Delayed heel rise
Uneven heel rise
What are the gait deviations seen during initial and mid-swing?
Circumduction
Vaulting
What are the gait deviations seen during terminal swing?
Terminal impact
Unequal step length
What is the cause of the hip not over foot at foot flat?
Patient “leads” with prosthetic side with pelvic rotation
How can you correct the hip not over foot at foot flat?
Gait training
What causes narrow based gait?
Foot too inset
Inversion of the foot is caused by?
Too much socket abduction
Loose socket in M/L
What causes eversion of the foot?
Too much socket adduction
Loose socket M/L
What causes Goose Stepping?
Amputee waits for knee impact before putting foot on ground
What is goose stepping?
Heel does not contact floor
What causes knee hyperextension?
Knee unit extension stop excessive
What causes excessive knee flexion?
Swing extension resistance too low