Prosthetic gait deviations Flashcards
Eric Lieux:
TF IC to Midstance
Deviation: knee instability (flexion)
Causes:
- Knee Center Too far Anterior
- Excessive Resistance to Planter Flexion
- Weak Hip Extensors
Correction:
Strengthen hip extensors
Eric Lieux:
TF IC to Midstance
Deviation: Unequal stride
Cause:
Bad Gait Habit
NO TRUST
Correction:
- Work on equal stride length; put down tape to make them even
Eric Lieux:
TF IC to Midstance
Deviation: ER of the foot
Causes:
- Anterior Medial Brim
- Planter Flexion too Stiff
- R.O. M. Limited
Correction
Increase ROM
- want foot to hit ground, go to 5th met head, jump to first met he’d and out to big toe; need that transfer for normal gait!
Eric Lieux:
TF IC to Midstance
Deviation: Lateral trunk bending exceeds 1-2” at the head
Causes:
- Insufficient Adduction
- Foot out set too Far
- Prosthesis too Short
- Femur too Short
- Hip Pathology
- Weak Hip Abductors
- Painful Lateral Distal Femur Pressure
Correction:
Core strengthening with knee pain; for lateral distal femur pressure pain, scar tissue is a huge problem
Eric Lieux:
TF Midstance
Deviation: abducted gait
Causes:
- Medial Wall Problems
- Prosthesis too Long
- Poor Gait Habit
- Lateral Distal Femur Pressure
Eric Lieux:
TF Midstance
Deviation: Inversion or eversion of the foot
Causes:
- Improper Adduction or Abduction of Prosthetic Socket
- Loose Socket ML
Correction:
1st step if a prosthesis hurts, add a sock
Eric Lieux:
TF terminal stance
Deviation: Pelvic rise (vaulting)
Causes:
- Toe Lever too Long
- Shoe changed by amputee to lower heel
Correction:
Instruct amputee in regards to correct heel height
Eric Lieux:
TF terminal stance
Deviation: Drop off, torso lowers excessively
Cause:
1. Toe Lever arm Inadequate
Correction:
Gait training to achieve equal time on each leg and equal length of stride
Eric Lieux:
TF terminal stance
Deviation: Excessive lumbar lordosis
Cause of deviation:
- Insufficient socket Flexion
- Developing Hip Flexion contracture
Correction:
Stretch out contracture
Eric Lieux:
TF Pre-swing through initial swing
Deviation: Circumduction of the prosthesis
Causes:
- Medial Brim Problem
- Prosthesis too Long
- Inadequate Knee Flexion
Correction:
this is a habit, hard to break
Eric Lieux:
TF Pre-swing through initial swing
Deviation: Piston action
Cause:
inadequate fit and/or suspension
- should slip less than ¼ inch
Correction:
Check suspension
Eric Lieux:
TF Pre-swing through initial swing
Deviation: Medial whip; an abrupt medial moment of the heel as it raises from the floor, accompanied by a lateral movement of the knee and shank
Cause:
- Knee axis in excessive External Rotation
- Socket unstable on stump
- Muscular skeletal Pathology
Eric Lieux:
TF Pre-swing through initial swing
Deviation: Lateral whip; an abrupt lateral moment of the heel as it raises from the floor, accompanied by a medial movement of the knee and shank
Causes:
- Knee axis in excessive Internal Rotation
- Socket unstable on stump
- Muscular skeletal Pathology
Eric Lieux:
TF Mid-swing
Deviation: Vaulting on sound side
Causes:
- Prosthesis too long
- Prosthetic Knee too stiff
- Bad gait Habit
Eric Lieux:
TT IC
Deviation: Ball of the foot dorsiflexed more than 1.5”
Causes:
- Stride length too long
- Excessive socket flexion
Correction:
Train patient to maintain equal stride length
Eric Lieux:
TT IC
Deviation: Knee fully extended
Causes:
- Heel lever arm too short
- Heel Resistance too soft
Eric Lieux:
TT IC
Deviation: Excessive or insufficient compression
Cause:
heel resistance too soft or too firm
Eric Lieux:
TT
Deviation: continual anterior distal tibia pressure
Cause:
Excessive use of knee extensors
Correction:
Teach amputee hamstring gait
Eric Lieux:
TT Mid-stance
Deviation: Lateral trunk bending exceeds 1” at the head
Causes:
- Hip pathology - IT band
- Foot outset too far
- Prosthesis too short
Eric Lieux:
TT Mid-stance
Deviation: Gait base exceeds 2” - “wide base gait”
Causes:
- Foot outset too far
- Prosthesis too long
- Hip pathology
Eric Lieux:
TT Mid-stance
Deviation: Inversion or eversion of the foot; walking on lateral or medial edged
Causes:
- Improper adduction or abduction
- Loose Socket M. L.
Eric Lieux:
TT Mid-stance
Deviation: Lateral displacement exceeds ½”
Causes:
- Foot outset too far
- Loose socket M. L.
Eric Lieux:
TT Mid-stance
Deviation: No lateral displacement or any displacement medially
Causes:
- Foot outset too far
- Pain in peroneal area
- Short stump
- Knee pathology
Eric Lieux:
TT Terminal stance
Deviation: Knee goes into extension; pressure on anterior knee
Causes:
- Toe lever arm too long
- Amputee changed shoe to lower heel
- Insufficient socket flexion
Eric Lieux:
TT Weight transfer to pre-swing
Deviation: Drop off; WB period shortened and knee flex accentuated
Cause:
Toe lever arm too short
Eric Lieux:
TT swing phase
Deviation: Whip; An abrupt lateral or medial movement of the heel as it raises from the floor, accompanied by a medial movement of the knee and shank
Causes:
- Suspension incorrect
- Hip and or knee pathology
Book
TF
Deviation: Lateral displacement, abduction in stance
Prosthetic causes:
- Long prosthesis
- Abducted hip joint
- Inadequate lateral wall adduction
- Sharp or high medial wall
Anatomical causes:
- Abduction contracture
- weak abductors
- lateral/distal pain
- adductor redundancy instability
Book
TF
Deviation: Lateral displacement, Circumduction in swing
Prosthetic causes:
- Long prosthesis
- locked knee unit
- loose friction
- inadequate suspension
- small socket
- loose socket
- foot PF’d
Anatomical causes:
- Abduction contracture
- poor knee control
Book
TF
Deviation: Trunk shifts, lateral bend in stance
Prosthetic causes
- short prosthesis
- inadequate lateral wall adduction
- sharp or high medial wall
Anatomical causes:
- Abduction contracture
- Weak abductors
- hip pain
- instability
- show amputation limb
Book
TF
Deviation: Trunk shifts, forward flexion in stance
Prosthetic causes:
- unstable knee unit
- Short walker or crutches
Anatomical causes:
1. instability
Book
TF
Deviation: Trunk shifts, Lordosis in stance
Prosthetic causes:
1. inadequate socket flexion
Anatomical causes:
- hip flexion contracture
- weak extensors
Book
TF
Deviation: Rotations, medial (or lateral ) whip at heel off
Prosthetic causes:
- faulty socket contour
- knee bolt externally (or internally) rotated
- Foot malrotated
- prosthesis donned in malrotation
Anatomical causes:
1. with sliding friction unit, fast pace
Book
TF
Deviation: Rotations, Foot rotation at heel contact
Prosthetic causes:
- Stiff heel cushion
- malrotated foot
no anatomical causes
Book
TF
Deviation: Excessive knee motion, heel high rise in early swing
Prosthetic causes:
- Inadequate friction
- Slack extension aid
no anatomical causes
Book
TF
Deviation: Excessive knee motion, terminal impact at late swing
Prosthetic causes:
- Inadequate friction
- Taut extension aid
Anatomical cause:
1. forceful hip flexion
Book
TF
Deviation: Reduced knee motion, vault during swing
Prosthetic causes:
- Long prosthesis
- locked knee unit
- loose friction
- inadequate suspension
- small socket
- loose socket
- foot PF’d
Anatomical cause:
1. with sliding friction unit, fast pace
Book
TF
Deviation: Reduced knee motion, hip hike in swing
Prosthetic causes:
- Long prosthesis
- locked knee unit
- loose friction
- inadequate suspension
- small socket
- loose socket
- foot PF’d
Anatomical causes:
- Weak DFs
- PF spasticity
- pes equinus
- weak hip flexors
Book
TF
Deviation: uneven step length
Prosthetic causes:
- uncomfortable socket
- insufficient socket flexion
Anatomical causes:
- hip flexion contracture
- instability
Book
TT
Deviation: Early stance, excessive knee flexion
Prosthetic causes:
- High shoe heel
- insufficient PF
- Stiff heel cushion
- socket too far anterior
- Socket excessively flexed
- Cuff tabs too posterior
Anatomical causes:
- Flexion contracture
- Weak quadriceps
Book
TT
Deviation: Early stance, insufficient knee flexion
Prosthetic causes:
- Low shoe heel
- Excessive PF
- Soft heel cushion
- Socket too far posterior
- Socket insufficiently flexed
Anatomical causes:
- Extensor spasticity
- Weak quadriceps
- Anterior-distal pain
- Arthritis
Book
TT
Deviation: Midstance, lateral thrust
Prosthetic cause:
1. excessive foot inset
no anatomical causes
Book
TT
Deviation: Midstance, medial thrust
Prosthetic cause:
1. excessive foot outset
no anatomical causes
Book
TT
Deviation: Late stance, early knee flexion (also referred to as “drop off”)
Prosthetic cause:
- High shoe heel
- insufficient PF
- Keel too short
- DF stop too soft
- Socket too far anterior
- Socket excessively flexed
- Cuff tabs too posterior
Anatomical cause:
1. flexion contracture
Book
TT
Deviation: Late stance, delayed knee flexion (perception of walking uphill)
Prosthetic cause:
- Low shoe heel
- excessiv PF
- Keel too long
- DF stop too stiff
- Socket too far posterior
- Socket insufficiently flexed
Anatomical cause:
1. extensor spasticity