The influence of hip abductor weakness on frontal plane motion of the trunk and pelvis in patients with cerebral palsy

2013 ◽  
Vol 34 (4) ◽  
pp. 1198-1203 ◽  
Author(s):  
Britta K. Krautwurst ◽  
Sebastian I. Wolf ◽  
Daniel W.W. Heitzmann ◽  
Simone Gantz ◽  
Frank Braatz ◽  
...  
Keyword(s):  
Cerebral Palsy ◽  
Frontal Plane ◽  
Plane Motion ◽  
Hip Abductor

scholarly journals Frontal Plane Motion of the Pelvis and Hip during Gait Stance Discriminates Children with Diplegia Levels I and II of the GMFCS

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Renata Noce Kirkwood ◽  
Rosa de Lourdes Lima Dias Franco ◽  
Sheyla Cavalcanti Furtado ◽  
Ana Maria Forti Barela ◽  
Kevin John Deluzio ◽  
...  
Keyword(s):  
Cerebral Palsy ◽  
Stance Phase ◽  
Angular Displacement ◽  
Frontal Plane ◽  
Plane Motion ◽  
Pelvic Obliquity ◽  
Rehabilitation Programs ◽  
Level Ii ◽  
Level I ◽  
Gmfcs Level

Objective. To determine if gait waveform could discriminate children with diplegic cerebral palsy of the GMFCS levels I and II. Patients. Twenty-two children with diplegia, 11 classified as level I and 11 as level II of the GMFCS, aged 7 to 12 years. Methods. Gait kinematics included angular displacement of the pelvis and lower limb joints during the stance phase. Principal components (PCs) analyses followed by discriminant analysis were conducted. Results. PC1s of the pelvis and hip in the frontal plane differ significantly between groups and captured 80.5% and 86.1% of the variance, respectively. PC1s captured the magnitude of the pelvic obliquity and hip adduction angle during the stance phase. Children GMFCS level II walked with reduced pelvic obliquity and hip adduction angles, and these variables could discriminate the groups with a cross-validation of 95.5%. Conclusion. Reduced pelvic obliquity and hip adduction were observed between children GMFCS level II compared to level I. These results could help the classification process of mild-to-moderate children with diplegia. In addition, it highlights the importance of rehabilitation programs designed to improve pelvic and hip mobility in the frontal plane of diplegic cerebral palsy children level II of the GMFCS.

He influence of hip abductor weakness on frontal plane kinematics and kinetics in patients with cerebral palsy

2013 ◽  
Vol 38 ◽  
pp. S75
Author(s):  
Britta K. Krautwurst ◽  
Sebastian I. Wolf ◽  
Daniel W.W. Heitzmann ◽  
Frank Braatz ◽  
Thomas Dreher
Keyword(s):  
Cerebral Palsy ◽  
Frontal Plane ◽  
Hip Abductor ◽  
Kinematics And Kinetics

Control of Frontal Plane Motion of the Hindlimbs in the Unrestrained Walking Cat

2006 ◽  
Vol 96 (4) ◽  
pp. 1816-1828 ◽  
Author(s):  
John E. Misiaszek
Keyword(s):  
Stance Phase ◽  
Frontal Plane ◽  
Plane Motion ◽  
The Body ◽  
Three Dimensions ◽  
Support Surface ◽  
Electromyographic Activity ◽  
Lateral Stability ◽  
Adductor Muscles ◽  
Hip Abductor

This study describes the patterns of activity of hip abductor and adductor muscles and relates their activity to the frontal plane motions of the hindlimbs during unrestrained walking in the cat to provide insight into the function of these muscles in maintaining stability during walking. Electromyographic activity was recorded from hindlimb muscles while cats walked across a walkway. Four video cameras were used to record the movement of the animal in three dimensions. To further delineate the role of the hip abductors and adductors in regulating frontal plane movements of the legs, medial-lateral translations of the walking surface were periodically introduced. During walking, the hip abducts throughout much of the stance phase and adducts during swing. Normally, the abductors and adductors are co-active during much of the stance phase and are quiescent during swing. Consequently, the adduction observed during swing is likely the result of passive events. It is argued that the activity of the hip abductors during stance phase plays a prominent role in regulating frontal plane motion of the legs during walking. However, when medial-lateral stability is disturbed, both the hip abductors and adductors respond to stabilize the frontal plane motion of the body mass while also adjusting the frontal plane swing trajectory and subsequent paw placement. The balance corrective reactions observed in the cat after medial-lateral perturbations of the support surface reasonably approximate the reactions observed previously in humans, indicating that the cat is a reasonable model to explore the neural mechanisms of lateral stability during walking.

scholarly journals Biologically Inspired Design and Development of a Variable Stiffness Powered Ankle-Foot Prosthesis

2019 ◽  
Vol 11 (4) ◽  
Author(s):  
Alexander Agboola-Dobson ◽  
Guowu Wei ◽  
Lei Ren
Keyword(s):  
Lower Limb ◽  
Degrees Of Freedom ◽  
Sagittal Plane ◽  
Frontal Plane ◽  
Variable Stiffness ◽  
Plane Motion ◽  
Biologically Inspired ◽  
Passive Rotation ◽  
Ground Conditions ◽  
Biologically Inspired Design

Recent advancements in powered lower limb prostheses have appeased several difficulties faced by lower limb amputees by using a series-elastic actuator (SEA) to provide powered sagittal plane flexion. Unfortunately, these devices are currently unable to provide both powered sagittal plane flexion and two degrees of freedom (2-DOF) at the ankle, removing the ankle’s capacity to invert/evert, thus severely limiting terrain adaption capabilities and user comfort. The developed 2-DOF ankle system in this paper allows both powered flexion in the sagittal plane and passive rotation in the frontal plane; an SEA emulates the biomechanics of the gastrocnemius and Achilles tendon for flexion while a novel universal-joint system provides the 2-DOF. Several studies were undertaken to thoroughly characterize the capabilities of the device. Under both level- and sloped-ground conditions, ankle torque and kinematic data were obtained by using force-plates and a motion capture system. The device was found to be fully capable of providing powered sagittal plane motion and torque very close to that of a biological ankle while simultaneously being able to adapt to sloped terrain by undergoing frontal plane motion, thus providing 2-DOF at the ankle. These findings demonstrate that the device presented in this paper poses radical improvements to powered prosthetic ankle-foot device (PAFD) design.

Hip and Trunk Muscle Activity and Mechanics During Walking With and Without Unilateral Weight

2021 ◽  
pp. 1-8
Author(s):  
Kerri A. Graber ◽  
Kari L. Loverro ◽  
Mark Baldwin ◽  
Erika Nelson-Wong ◽  
Joshua Tanor ◽  
...  
Keyword(s):  
Muscle Activity ◽  
Therapeutic Option ◽  
Frontal Plane ◽  
Estimating Equation ◽  
Trunk Muscle ◽  
Lower Extremity Injury ◽  
Generalized Estimating Equation ◽  
Functional Activities ◽  
Strengthening Exercises ◽  
Hip Abductor

Pelvic drop is caused by decreased hip abductor muscle activity and is associated with lower-extremity injury. Hip abductor strengthening exercises are well established; however, no standard method exists to increase hip abductor activity during functional activities. The purpose of this research was to study the effects of walking with a unilateral weight. A total of 26 healthy adults walked on an instrumented treadmill with and without handheld weight (15%–20% body weight). Muscle activity, kinematic, and kinetic data were collected using surface electromyography, motion capture, and force plates, respectively. Average hip and trunk muscle activity, hip, pelvic, and trunk angles, and peak internal hip moments during stance were compared for each side (contralateral/ipsilateral to the weight) between conditions (unweighted/weighted) using a generalized linear model with generalized estimating equation correction. Interactions between condition and side were observed for muscle activity, frontal plane pelvic and trunk angles, and frontal plane hip moments (P ≤ .003). Compared with the unweighted condition, the weighted condition had higher hip abductor activity contralateral to the weight (P < .001), while no change was found ipsilateral to the weight (P ≥ .790). Similar changes were found for kinematic and kinetic variables. Walking with a unilateral weight may be a therapeutic option to increase functional hip abductor activity.

scholarly journals Effects of Isolated Hip Abductor Fatigue on Frontal Plane Knee Mechanics

2010 ◽  
Vol 42 (3) ◽  
pp. 535-545 ◽  
Author(s):  
CHRISTOPHER F. GEISER ◽  
KRISTIAN M. O'CONNOR ◽  
JENNIFER E. EARL
Keyword(s):  
Frontal Plane ◽  
Knee Mechanics ◽  
Hip Abductor

The Effect of the TayCo External Ankle Brace on Multidirectional Reach Distance, Balance, and Motion in Collegiate Athletes

2020 ◽  
Vol 25 (6) ◽  
pp. 323-327
Author(s):  
Steven J. Smith ◽  
Cameron J. Powden
Keyword(s):  
Range Of Motion ◽  
Sagittal Plane ◽  
Dynamic Balance ◽  
Plantar Flexion ◽  
Collegiate Athletes ◽  
Frontal Plane ◽  
Plane Motion ◽  
Lower Extremity Function ◽  
Physically Active ◽  
Ankle Brace

Ensuring ankle stability while allowing for functional movement is important when returning patients to physical activity and attempting to prevent injury. The purpose of this study was to examine the effectiveness of the TayCo external and a lace-up ankle brace on lower extremity function, dynamic balance, and motion in 18 physically active participants. Significantly greater range of motion was demonstrated for the TayCo brace compared with the lace-up brace for dorsiflexion and plantar flexion, as well as less range of motion for the TayCo brace compared to the lace-up brace for inversion and eversion. The TayCo brace provided restricted frontal plane motion while allowing increased sagittal plane motion without impacting performance measures.

Frontal Plane Motion at the Hip and Knee and Genu Recurvatum Discriminate Between Males and Females

2008 ◽  
Vol 40 (Supplement) ◽  
pp. S167-S168
Author(s):  
Jennifer M. Medina McKeon ◽  
Craig R. Denegar ◽  
Jay Hertel
Keyword(s):  
Frontal Plane ◽  
Plane Motion ◽  
Genu Recurvatum ◽  
Males And Females

Extrinsic rearfoot posts

1992 ◽  
Vol 82 (4) ◽  
pp. 202-207 ◽  
Author(s):  
RL Blake ◽  
H Ferguson
Keyword(s):  
Frontal Plane ◽  
Plane Motion ◽  
Functional Change ◽  
Shock Absorption ◽  
Orthotic Device

The addition of an extrinsic rearfoot post to an orthotic device allows the podiatric practitioner to modify the function of the device. Specifically, rearfoot posts are used to allow for a more inverted heel position at contact, to provide greater resistance to abnormal frontal plane motion of the calcaneus and to provide for motion for shock absorption. The authors present nine prescription variables that each provide for a specific functional change to be incorporated into the orthotic device.

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