*Sagittal Plane Motion during Different Squat Tasks in Patients with Femoroacetabular Impingement

2019 ◽

Vol 11 (4) ◽

Cited By ~ 1

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.

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The Biomechanics of Lower Extremity Action in Distance Running

Foot & Ankle ◽

10.1177/107110078700700402 ◽

1987 ◽

Vol 7 (4) ◽

pp. 197-217 ◽

Cited By ~ 51

Author(s):

Peter R. Cavanagh

Keyword(s):

Lower Extremity ◽

Sagittal Plane ◽

Plane Motion ◽

Common Finding ◽

Distance Running ◽

Foot Placement ◽

Running Injuries ◽

Acceleration Force ◽

Rearfoot Motion ◽

Insight Into

The role of quantitative biomechanical measurements in the evaluation of the running patient is discussed. Many techniques are now available to provide insight into the external mechanics of lower extremity action during running, and results from such measurements are presented for symptom-free subjects at distance running speeds. Details of stride length, stride time, and foot placement are first presented followed by a discussion of kinematic data, including stick figures, angle-time graphs, and angle-angle diagrams for the sagittal plane motion of the hip, knee, and ankle joints. The measurement of rearfoot motion, as an approximation of coronal plane subtalar joint movements, is also discussed. Results from acceleration, force, and pressure measurements are considered, and the assertion is made that bilateral asymmetry in many of these measures is a fairly common finding. There are, at present, few reports in the literature of the application of biomechanical techniques to the evaluation of patients with running injuries. It is anticipated that there will be rapid developments in this area in the future and that this will provide considerable insight into the etiology, diagnosis, and treatment of running injuries.

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

International Journal of Athletic Therapy & Training ◽

10.1123/ijatt.2019-0083 ◽

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.

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Sagittal Plane Motion Of The Foot Longitudinal Arch During Landing

Medicine & Science in Sports & Exercise ◽

10.1249/01.mss.0000272972.51516.41 ◽

2007 ◽

Vol 39 (Supplement) ◽

pp. S24

Author(s):

Mako FUKANO ◽

Akihiro KANAMORI ◽

Toru FUKUBAYASHI

Keyword(s):

Sagittal Plane ◽

Plane Motion ◽

Longitudinal Arch

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Evaluation of inertial measurement units as a novel method for kinematic gait evaluation in dogs

Veterinary and Comparative Orthopaedics and Traumatology ◽

10.3415/vcot-16-01-0012 ◽

2016 ◽

Vol 29 (06) ◽

pp. 475-483 ◽

Cited By ~ 4

Author(s):

Alexandra Pauls ◽

Chris Kawcak ◽

Kevin Haussler ◽

Gina Bertocci ◽

Valerie Moorman ◽

...

Keyword(s):

Data Acquisition ◽

Sagittal Plane ◽

Plane Motion ◽

Inertial Measurement Units ◽

Hip Joints ◽

Kinematic Data ◽

Inertial Measurement ◽

Optical Motion ◽

Measurement Units ◽

Plane Joint

Summary Objective: To evaluate the use of inertial measurement units (IMU) for quantification of canine limb kinematics. Methods: Sixteen clinically healthy, medium-sized dogs were enrolled. Baseline kinematic data were acquired using an optical motion capture system. Following this baseline data acquisition, a harness system was used for attachment of IMU to the animals. Optical kinematic data of dogs with and without the harness were compared to evaluate the influence of the harness on gait parameters. Sagittal plane joint kinematics acquired simultaneously with IMU and the optical system were compared for the carpal, tarsal, stifle and hip joints. Comparisons of data were made using the concordance correlation coefficient (CCC) test and evaluation of root mean squared errors (RMSE). Results: No significant differences were demonstrated in stance duration, swing duration or stride length between dogs instrumented with or without the harness, however, mean RMSE values ranged from 4.90° to 14.10° across the various joints. When comparing simultaneously acquired optical and IMU kinematic data, strong correlations were found for all four joints evaluated (CCC: carpus = 0.98, hock = 0.95, stifle = 0.98, hip = 0.96) and median RMSE values were similar across the joints ranging from 2.51° to 3.52°. Conclusions and Clinical relevance: Canine sagittal plane motion data acquisition with IMU is feasible, and optically acquired and IMU acquired sagittal plane kinematics had good correlation. This technology allows data acquisition outside the gait laboratory and may provide an alternative to optical kinematic gait analysis for the carpal, tarsal, stifle, and hip joints in the dog. Further investigation into this technology is indicated.

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Validity and Reliability of a Smartphone and Digital Inclinometer in Measuring the Lower Extremity Joints Range of Motion

Montenegrin Journal of Sports Science and Medicine ◽

10.26773/mjssm.210907 ◽

2021 ◽

Vol 10 (2) ◽

pp. 47-52

Author(s):

Walaa S. Mohammad ◽

◽

Faten F. Elattar ◽

Walaa M. Elsais ◽

Salameh O. AlDajah ◽

...

Keyword(s):

Lower Extremity ◽

Range Of Motion ◽

Sagittal Plane ◽

Low Cost ◽

Smart Phone ◽

Correlation Coefficients ◽

Plane Motion ◽

Clinical Settings ◽

Validity And Reliability ◽

Digital Inclinometer

In clinical settings, available valid and reliable tools are important components in evaluating the lower extremity range of motion. Although the digital inclinometer is highly reliable compared to the universal goniometer, its availability and high cost impede its extensive use. Nowadays, smartphone applications have become widely available to clinicians for assessing the joint range of motion. The present study aims to assess the validity and intra-rater reliability of the smart- phone application “Clinometer” for measuring hip, knee, and ankle sagittal ranges of motion, using the digital inclinom- eter as the reference standard. Active hip, knee flexion and ankle dorsiflexion and plantarflexion range-of-motion mea- surements were recorded in 102 young, healthy female participants on two separate occasions using Clinometer and a digital inclinometer. Pearson’s correlation coefficients (r) were used to evaluate the smartphone application’s validity against the digital inclinometer. To assess the reliability of the Clinometer app, the intra-class correlation coefficient (ICC), standard error of measurement (SEM), and minimal detectable difference (MDD) were used. Clinometer displayed excellent validity when compared to the digital inclinometer for hip and knee movements (r>0.90), while ankle ROM displayed moderate validity (r = 0.52-0.57). Additionally, Clinometer demonstrated excellent reliability (ICC > 0.90) for hip and knee sagittal plane motion and moderate reliability for the ankle sagittal plane motion (ICC = 0.53–0.67). Cli- nometer is a portable, low-cost, valid, and reliable tool for assessing active hip and knee range of motions and can be easily incorporated into clinical settings; however, it cannot be used interchangeably for ankle measures.

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