Walking Gait Cycle Phases

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Questions and Answers

What is the typical cadence during walking?

  • 90 steps/min
  • 110 steps/min (correct)
  • 100 steps/min
  • 120 steps/min

The stance phase accounts for 60% of the gait cycle.

True (A)

What is the typical velocity range for walking in meters per minute?

70-90 m/min

The typical step length during walking is approximately _____ of a person's height.

<p>1/3</p> Signup and view all the answers

Match the phase of gait with the associated muscle actions:

<p>Initial contact = Hip extensors and ankle dorsiflexors active Loading response = Knee extensors work eccentrically Mid-stance = Ankle plantar flexors working eccentrically Pre-swing = Hip flexors clear the foot</p> Signup and view all the answers

During which phase of gait do the knee flexors and ankle plantar flexors stretch?

<p>Terminal stance (A)</p> Signup and view all the answers

Double support time accounts for 80% of stride time.

<p>False (B)</p> Signup and view all the answers

What is the typical toe-out angle during walking?

<p>7 degrees</p> Signup and view all the answers

What is one possible underpinning impairment for a lack of dorsi flexion on initial contact during walking?

<p>Weak dorsi flexors (D)</p> Signup and view all the answers

Knee hyperextension during the loading response is an adaptive strategy.

<p>False (B)</p> Signup and view all the answers

What might result in hips being externally rotated bilaterally during the walking cycle?

<p>Weak hip internal rotators</p> Signup and view all the answers

During the stance phase, decreased ________ can lead to the trunk leaning forward.

<p>dorsiflexion</p> Signup and view all the answers

Match the missing components with their associated adaptive strategies or compensations:

<p>Lack of knee flexion on loading response = Knee hyperextension Lack of dorsi flexion on initial contact = Decreased balance Decreased dorsiflexion through stance = Trunk forward lean</p> Signup and view all the answers

Which of the following could be a consequence of weak dorsiflexors?

<p>Decreased power during toe-off (C)</p> Signup and view all the answers

Uneven base of support often indicates issues with balance and lower limb strength.

<p>True (A)</p> Signup and view all the answers

What could decreased passive length of the plantar flexors indicate?

<p>Plantar flexor contracture or spasticity</p> Signup and view all the answers

Which of the following is a consequence of decreased knee extension through stance?

<p>Trunk incline forward (D)</p> Signup and view all the answers

A lack of plantarflexion at push-off can lead to insufficient hip flexion during swing.

<p>True (A)</p> Signup and view all the answers

What adaptive strategy is commonly seen due to decreased knee flexion during initial swing?

<p>Excessive hip flexion</p> Signup and view all the answers

The condition of having decreased dorsiflexion may be referred to as ______.

<p>contracture/spasticity</p> Signup and view all the answers

Match the observed movement with its potential underlying impairment:

<p>Decreased knee flexion = Insufficient push off due to weak and/or short plantarflexors Short step length = Weak knee flexion Lack of appropriate knee extension = Trunk incline forward during stance Lack of plantarflexion at push-off = Decreased hip flexion in swing</p> Signup and view all the answers

What is a potential consequence of weak knee flexion if it is present prior to push-off?

<p>Circumduction (B)</p> Signup and view all the answers

A long step length is typically associated with weak hip flexors.

<p>False (B)</p> Signup and view all the answers

What could indicate insufficient push-off during gait?

<p>Weak and/or short plantarflexors</p> Signup and view all the answers

What is a consequence of impaired clearance mechanisms at the ankle?

<p>Weak ankle dorsiflexors (D)</p> Signup and view all the answers

Weak hip contraction can result in optimal knee extension prior to heel strike.

<p>False (B)</p> Signup and view all the answers

What is one of the primary issues caused by weak quadriceps?

<p>Decreased control during the terminal swing phase</p> Signup and view all the answers

Lack of ______________ results in impaired clearance mechanisms.

<p>ankle dorsiflexion</p> Signup and view all the answers

Match the gait issues with their causes:

<p>Decreased knee extension = Weak knee extensors Impaired clearance at the ankle = Weak ankle dorsiflexors Weak quadriceps = Lack of knee control Terminal swing with knee flexed = Lack of control in hip flexors</p> Signup and view all the answers

Which of the following can lead to terminal swing issues?

<p>Weak hamstring muscles (C)</p> Signup and view all the answers

A tight plantar flexor can contribute to poor ankle dorsiflexion.

<p>True (A)</p> Signup and view all the answers

What movement is associated with decreased knee extension prior to heel strike?

<p>Knee flexion during terminal swing</p> Signup and view all the answers

What percentage of the gait cycle is typically represented by the swing phase?

<p>40% (A)</p> Signup and view all the answers

Which muscles are primarily active during the loading response phase of the gait cycle?

<p>Knee extensors (B)</p> Signup and view all the answers

What is the approximate stride duration during walking?

<p>1.1 seconds (B)</p> Signup and view all the answers

Which phase of the gait cycle is critical for preparing for the swing phase?

<p>Terminal stance (D)</p> Signup and view all the answers

What is the typical base of support (BOS) distance between heels during walking?

<p>2-12 cm (A)</p> Signup and view all the answers

During which phase of gait are the hip flexors and dorsiflexors mainly active to clear the foot?

<p>Pre-swing (D)</p> Signup and view all the answers

What is the approximate angle of toe-out during walking?

<p>7 degrees (C)</p> Signup and view all the answers

What is a likely consequence of insufficient push-off during gait?

<p>Increased hip flexion during swing (A)</p> Signup and view all the answers

Which muscle group is primarily involved during the mid-stance phase of the gait cycle?

<p>Ankle plantar flexors (D)</p> Signup and view all the answers

Which issue may arise from a lack of proper knee flexion prior to push-off?

<p>Short step length (C)</p> Signup and view all the answers

What could be an underlying impairment resulting from decreased dorsiflexion length?

<p>Insufficient push-off (B)</p> Signup and view all the answers

Which adaptive strategy might be seen with decreased knee flexion during initial swing?

<p>Excessive hip flexion (A)</p> Signup and view all the answers

What is a possible consequence of decreased hip extension at the end of stance?

<p>Increased time in double support (A)</p> Signup and view all the answers

What can shorter hip flexors indicate during the swing phase?

<p>Difficulty in leg clearance (C)</p> Signup and view all the answers

Which underlying impairment might be related to excessive hip flexion during swing?

<p>Decreased push-off strength (C)</p> Signup and view all the answers

What condition may result from decreased plantarflexion during push-off?

<p>Shortened step length (C)</p> Signup and view all the answers

What could be a result of decreased ankle dorsiflexion at initial contact during walking?

<p>Knee hyperextension during loading response (A)</p> Signup and view all the answers

Which of the following may occur due to weak dorsiflexors during the stance phase?

<p>Forward trunk lean (C)</p> Signup and view all the answers

What compensatory strategy might a person use if they experience a lack of knee flexion on loading response?

<p>Knee hyperextension (B)</p> Signup and view all the answers

What underlying impairment could result in hips being externally rotated during the walking cycle?

<p>Weak hip internal rotators (B)</p> Signup and view all the answers

Which potential impairment is indicated by a forward trunk lean during the stance phase?

<p>Compensation for weak dorsiflexors (C)</p> Signup and view all the answers

What might a decreased base of support in a walking cycle indicate?

<p>Poor balance and strength in the lower limbs (D)</p> Signup and view all the answers

How does a lack of dorsiflexion through the stance phase likely affect the gait cycle?

<p>It can cause a truncal forward lean (D)</p> Signup and view all the answers

What could result from excessive hip flexion during gait?

<p>Compromised pelvic elevation (C)</p> Signup and view all the answers

What is a probable consequence of weak relative lower limb during the walking cycle?

<p>Difficulty maintaining balance (D)</p> Signup and view all the answers

What might cause impaired clearance mechanisms at the ankle?

<p>Weak ankle dorsiflexors (B)</p> Signup and view all the answers

A lack of dorsiflexion prior to heel strike can lead to which of the following?

<p>Terminal swing with knee flexed (C)</p> Signup and view all the answers

What is a likely consequence of weak quadriceps during the gait cycle?

<p>Difficulty in terminal swing phase (A)</p> Signup and view all the answers

Which factor is associated with a lack of control of hip flexion during gait?

<p>Weak knee extensors (D)</p> Signup and view all the answers

What might excessive tightness of the plantar flexors affect during gait?

<p>Ankle dorsiflexion ability (B)</p> Signup and view all the answers

What movement may indicate a lack of knee control during the gait cycle?

<p>Knee flexion earlier than expected (B)</p> Signup and view all the answers

Which of the following could be a consequence of weak ankle dorsiflexors during gait?

<p>Delayed heel strike (C)</p> Signup and view all the answers

Flashcards

Stride duration

The time it takes to complete one stride (approximately 1.1 seconds).

Stance/swing time

The proportions of the gait cycle dedicated to the stance and swing phases, approximately 60% stance and 40% swing.

Double/single support time

The portion of the stride time during which both feet are in contact with the ground (double support) versus only one foot (single support).

Cadence

The rate of steps per minute (approximately 110 steps per minute).

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Walking velocity

The speed at which a person walks, typically between 70-90 meters per minute.

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Step length

The distance covered with each stride, often approximately one-third of a person's height.

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Base of Support (BOS)

The area beneath the body's support base while walking, typically about 2-12 cm between heels.

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Toe Out

The angle of the foot outward during walking (approximately 7 degrees).

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Initial Contact

The first contact of the foot with the ground during the gait cycle.

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Loading Response

The phase of gait immediately following initial contact, as the body absorbs the impact.

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Mid-Stance

The phase of gait when the body weight is fully supported over the stance leg.

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Terminal Stance

The phase of gait as the stance leg is preparing for swing.

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Pre-Swing

The phase of gait preparing for lifting the swing leg.

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Initial Swing

The phase of gait where the swing leg begins moving forward.

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Mid Swing

The phase of gait as the swing leg is swinging forward.

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Terminal Swing

The phase of gait where hip extensors, dorsiflexors, and knee flexors work eccentrically to slow the foot before heel contact.

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Heel Strike

The initial contact of the heel with the ground during walking

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Initial Alignment

The positioning of the body at the start of the walking cycle.

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Missing R ankle dorsiflexion

A deficiency in dorsiflexion in the right ankle during the initial alignment phase of walking.

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Lack of dorsiflexion during initial contact

Inability of dorsiflexor muscles to appropriately control the foot during the initial contact of the gait cycle.

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Hip Neutral Rotation

The ideal alignment of the hips which aids in optimal balance and gait.

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Hip External Rotation

Rotation of the hip outwards.

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Decreased knee flexion on loading response

A lack of knee bending during the crucial loading phase of walking

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Lack of knee flexion on loading response

A deficiency in knee flexion when the foot contacts the ground during the stance phase of the gait cycle.

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Decreased dorsiflexion through stance

Reduced dorsiflexion, impacting ankle mobility in the stance phase.

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Reduced Knee Extension (Stance)

Insufficient knee extension during the stance phase of gait, leading to a lack of appropriate knee flexion/extension through stance.

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Trunk Inclination (Stance)

Forward trunk lean during stance, often associated with insufficient hip flexion.

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Decreased Dorsiflexion (Stance)

Reduced dorsiflexion of the foot during the stance phase, affecting the length of the foot during stance.

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Short Step Length

A shorter-than-normal step length during gait, often related to inadequate knee flexion before push-off or insufficient hip extension at the end of stance.

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Weak Knee Flexion (Initial Swing)

Insufficient knee flexion at the start of the swing phase, affecting the ability to clear the limb for the next step.

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Insufficient Push-off PF (Swing)

Lack of appropriate plantarflexion during the push-off phase of gait, affecting swing clearance, usually linked to short or weak plantarflexors.

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Excessive Hip Flexion (Swing)

excessive hip flexion at the initial stage of the swing phase, which may be a compensation for insufficient knee flexion.

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Insufficient Dorsiflexion (Swing)

A lack of dorsiflexion during the swing phase, potentially impeding clearance.

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Short Hip Flexor (Swing)

A shortened hip flexor muscle impacting swing mechanics, often a compensational outcome.

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Appropriate hip flexion

Elevation of the pelvis and abduction of the leg

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Impaired hip flexion

Reduced or absent elevation and abduction of the leg during walking.

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Weak ankle dorsiflexors

Reduced or absent ability to lift the foot at the ankle

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Decreased knee extension

Reduced ability to straighten the knee

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Lack of ankle dorsiflexion

Reduced ability to lift the foot at the ankle before heel strike during walking

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Weak knee extensors

Reduced ability to straighten the knee during gait

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Poor hip flexion control during gait

Impaired coordination of hip flexion during walking or running

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Hip flexion weakness

Inability to raise the leg

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Knee flexion weakness

Reduced ability to bend the knee during gait

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Decreased hip abduction

Reduced ability to move the leg away from the midline.

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Weak knee extensors prior to heel strike

Limited ability to straighten the knee right before the foot touches the ground during walking.

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Shortened hip flexors

Hip Flexors are too tight.

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Stride Duration

The time taken for one step, about 1.1 seconds

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Stance/Swing Time

60% stance, 40% swing in a gait cycle.

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Double/Single Support

Time both feet are on the ground (20%), one foot on the ground (80%).

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Cadence

Steps per minute, around 110

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Walking Velocity

The speed of walking, 70-90 m/min (4.2-5.4 km/h)

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Step Length

Distance of each step, roughly 1/3 your height (60-65 cm)

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Base of Support (BOS)

The area under your feet, 2-12 cm between heels.

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Toe Out

Angle of foot outward during walk (~7 degrees)

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Initial Contact

Foot first touches the ground.

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Loading Response

Body absorbs impact after initial contact.

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Mid-Stance

Full body weight on stance leg.

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Terminal Stance

Stance leg preparing for swing.

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Pre-Swing

Preparing to move the swing leg.

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Initial Swing

Swing leg starts moving forward.

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Terminal Swing

The phase of gait where hip extensors, dorsiflexors, and knee flexors work eccentrically to slow the foot before heel contact.

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Heel Strike

The initial contact of the heel with the ground during walking.

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Initial Alignment

The positioning of the body at the start of the walking cycle.

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Missing R ankle dorsiflexion (Initial Alignment)

A deficiency in dorsiflexion in the right ankle during the initial alignment phase of walking.

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Hips NOT neutral rotation (Initial Alignment)

Hips not in the ideal rotational alignment during initial alignment, often externally rotated.

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Lack of dorsiflexion during initial contact

Inability of dorsiflexor muscles to appropriately control the foot during the initial contact of the gait cycle.

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Lack of knee flexion on loading response

A deficiency in knee flexion when the foot contacts the ground during the stance phase of the gait cycle.

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Decreased dorsiflexion through stance

Reduced dorsiflexion, impacting ankle mobility in the stance phase of gait.

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Decreased hip extension (end stance)

Insufficient hip extension at the end of the stance phase, impacting the next step.

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Lack of knee flexion prior to push-off

Limited knee flexion before the push-off during stance phase, affecting step length.

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Lack of plantar flexion (PF) at push-off

Insufficient plantar flexion during the push-off phase, impacting swing clearance and next step.

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Decreased knee flexion (initial swing)

Insufficient knee flexion at the start of the swing phase, affecting the ability to clear the foot.

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Excessive hip flexion (swing)

Excessive hip flexion at the start of the swing phase, possibly a compensation for insufficient knee flexion.

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Insufficient push-off PF (swing)

Insufficient plantar flexion during the push-off phase, impacting swing clearance and next step.

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Short step length

A shorter-than-normal step length, often related to various gait impairments, including lack of knee flexion before push-off or insufficient hip extension.

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Trunk inclination (stance)

Forward trunk lean, often representing insufficient hip flexion during the stance phase.

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Decreased dorsiflexion (stance)

Reduced dorsiflexion during the stance phase, affecting the mobility of the ankle and foot.

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Weak knee flexion (initial swing)

Knee flexion is insufficient at the start of the swing phase, impacting the foot's clearance.

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Appropriate hip flexion

Elevation of the pelvis and abduction of the leg during gait.

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Impaired hip flexion

Reduced or absent elevation and abduction of the leg during walking.

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Weak ankle dorsiflexors

Reduced or absent ability to lift the foot at the ankle.

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Decreased knee extension

Reduced ability to straighten the knee.

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Lack of ankle dorsiflexion

Reduced ability to lift the foot at the ankle before heel strike during walking.

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Weak knee extensors

Reduced ability to straighten the knee during gait.

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Poor hip flexion control during gait

Impaired coordination of hip flexion during walking or running.

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Hip flexion weakness

Inability to raise the leg during gait.

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Knee flexion weakness

Reduced ability to bend the knee during gait.

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Decreased hip abduction

Reduced ability to move the leg away from the midline during gait.

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Weak knee extensors prior to heel strike

Limited ability to straighten the knee right before the foot touches the ground during walking.

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Shortened hip flexors

Hip flexors are too tight.

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Lack of dorsiflexion during heel strike

Inability of dorsiflexor muscles to appropriately control the foot during the initial contact of the gait cycle.

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Study Notes

Walking Gait Cycle Phases

  • Normative values for walking include stride duration (~1.1 seconds/stride), stance/swing time (60%/40% of gait cycle), double/single support time (20%/80% of stride time), cadence (~110 steps/minute), velocity (70-90 meters/minute or 4.2-5.4 km/hour), step length (~1/3 of height, 60-65 cm), and toe out (~7 degrees).

Gait Phases and Muscle Actions

  • Initial Contact: Hip extensors, knee flexors/extensors, and ankle dorsiflexors are active.
  • Loading Response: Knee extensors work eccentrically, controlling dorsiflexors.
  • Mid-Stance: Ankle plantar flexors work eccentrically, and knee flexors are active.
  • Terminal Stance: Hip flexors and dorsiflexors assist in clearing the foot.
  • Pre-swing: Hip flexors and dorsiflexors are mainly active.
  • Initial Swing: Hip extensors, dorsiflexors, and knee flexors work eccentrically to slow the foot.
  • Mid Swing: Hip extensors, dorsiflexors, and knee flexors work eccentrically to slow the foot.
  • Terminal Swing: Heel strike triggers ankle dorsiflexors, knee extensors/flexors, and hip extensors.

Initial Alignment and Possible Impairments

  • Missing components: Decreased ankle dorsiflexion, hips not neutrally rotated.
  • Adaptive strategies: Hip externally rotated, increased base of support (BOS).
  • Possible underlying impairments: Decreased plantarflexor length (contracture/spasticity), weak hip internal rotation/hip adduction/short external rotation/hip abduction/balance/sensory issues, uneven BOS (weight).

Stance Phase Impairments

  • Missing components: Lack of dorsiflexion on initial contact, lack of knee flexion on loading response, decreased dorsiflexion throughout stance, lack of appropriate knee extension/flexion during stance, decreased hip extension during terminal stance, lack of knee flexion prior to push-off, lack of plantarflexors at push-off.
  • Adaptive strategies: Hyperextension, trunk included forward during stance (hip flexion), trunk incline forward (hip flexion). Increased time in double support/quick step, short step length, circumduction, increased hip flexion in swing to clear leg.
  • Possible underlying impairments: Weak dorsiflexion (eccentric control) plantarflexor contracture, weak dorsiflexion decreased dorsiflexion plantarflexor length (contracture/spasticity), short hip flexor/short plantarflexor, weak knee flexion.

Swing Phase Impairments

  • Missing components: Decreased knee flexion (initial swing), appropriate hip flexion (excessive), decreased knee extensions prior to heel strike, lack of ankle dorsiflexion prior to heel strike.
  • Adaptive strategies: Excessive hip flexion, elevation of pelvis, and abduction of leg.
  • Possible underlying impairments: Insufficient push-off due to weak/short plantarflexors, short hip flexors, impaired clearance mechanisms at the ankle due to weak ankle dorsiflexors/short plantarflexors, weak hip flexion and or knee flexion/dorsiflexion, and lack of control of hip flexion/knee flexion/knee extension, and Co-contraction.

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