Validation of Flexible Electrogoniometry as a Measure of Joint Kinematics

potential between-limb differences in TSOU, GRF, ankle motion, and spatiotemporal gait parameters. Results TSOU was significantly lower (≈175 m/s) in the repaired than in the contralateral AT over the entire gait cycle (P < 0.05). Sagittal ankle motion was significantly greater (≈3°) in the repaired than in the contralateral limb (P = 0.036). There were no significant differences in GRF or spatiotemporal parameters between limbs. Conclusions Repaired AT was characterised by a lower TSOU, reflecting a lower material stiffness in the repaired tendon than in the contralateral tendon. A lower material stiffness may underpin greater ankle joint motion of the repaired limb during walking and long-term deficits in the muscle-tendon unit reported with AT repair. Treatment and rehabilitation approaches that focus on increasing the material stiffness of the repaired AT may be clinically beneficial. Transmission-mode ultrasound would seem useful for quantifying tendon properties post AT rupture repair and may have the potential to individually guide AbstractPurpose This cross-sectional study used transmissionmode ultrasound to evaluate dynamic tendon properties during walking in surgically repaired and contralateral Achilles tendon (AT), with a median (range) post-operative period of 22 (4-58)

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“…The electrogoniometer has a reported accuracy within 1.5% over a measurement range of 100° and a measurement resolution of 1° [37].…”

Section: Equipmentmentioning

confidence: 99%

Lower material stiffness in rupture-repaired Achilles tendon during walking: transmission-mode ultrasound for post-surgical tendon evaluation

Wulf

Shanker

Schuetz

et al. 2017

Knee Surg Sports Traumatol Arthrosc

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“…It has the advantage of being light, portable, easy to operate, and relatively inexpensive [10][11][12][13] , and it can be applied in occupational 2 and clinical environments [14][15][16][17] . Other advantages are: the recording is not influenced by other devices or energy sources, large quantities of data can be recorded, and long duration recordings can be made 13,18 .…”

Section: Introductionmentioning

confidence: 99%

Wrist electrogoniometry: are current mathematical correction procedures effective in reducing crosstalk in functional assessment?

Foltran

Silva

Sato

et al. 2013

Rev. bras. fisioter.

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| Background: The recording of human movement is an essential requirement for biomechanical, clinical, and occupational analysis, allowing assessment of postural variation, occupational risks, and preventive programs in physical therapy and rehabilitation. The flexible electrogoniometer (EGM), considered a reliable and accurate device, is used for dynamic recordings of different joints. Despite these advantages, the EGM is susceptible to measurement errors, known as crosstalk. There are two known types of crosstalk: crosstalk due to sensor rotation and inherent crosstalk. Correction procedures have been proposed to correct these errors; however no study has used both procedures in clinical measures for wrist movements with the aim to optimize the correction. Objective: To evaluate the effects of mathematical correction procedures on: 1) crosstalk due to forearm rotation, 2) inherent sensor crosstalk; and 3) the combination of these two procedures. Method: 43 healthy subjects had their maximum range of motion of wrist flexion/ extension and ulnar/radials deviation recorded by EGM. The results were analyzed descriptively, and procedures were compared by differences. Results: There was no significant difference in measurements before and after the application of correction procedures (P≤0.05). Furthermore, the differences between the correction procedures were less than 5° in most cases, having little impact on the measurements. Conclusions: Considering the time-consuming data analysis, the specific technical knowledge involved, and the inefficient results, the correction procedures are not recommended for wrist recordings by EGM.Keywords: reproducibility of results; physical therapy; health evaluation. HOW TO CITE THIS ARTICLEFoltran FA, Silva LCCB, Sato TO, Coury HJCG. Wrist electrogoniometry: are current mathematical correction procedures effective in reducing crosstalk in functional assessment? Braz J Phys Ther. 2013 Jan-Feb; 17(1):32-40. http://dx

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“…Long, flexible plastic strips, fastened to the goniometer were applied with double-sided tape to the skin of the lateral side of the knee to minimize motion between the transducer and the underlying skin and subcutaneous tissue. Any changes in body shape along the lateral border of the leg were accommodated by placing pliable foam blocks beneath the end of the plastic strips adjacent to the knee [23]. This permitted a neutral (ie, nonabducted or nonadducted) configuration in the lateral plane to be achieved, which served to prevent any additional error secondary to interference between the abduction-adduction and flexion-extension channels.…”

Section: Methodsmentioning

confidence: 99%

Actual Knee Motion during Continuous Passive Motion Protocols is Less Than Expected

Bible¹,

Simpson²,

Biswas³

et al. 2009

Clinical Orthopaedics &Amp; Related Research

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Investigations of the usefulness of continuous passive motion (CPM) after TKA have yielded mixed results, with evidence suggesting its efficacy is contingent on the presence of larger motion arcs. Surprisingly, the range of motion (ROM) the knee actually experiences while in a CPM machine has not been elucidated. In this study, the ability of a CPM apparatus to bring about a desired knee ROM was assessed with an electrogoniometer. The knee experienced only 68% to 76% of the programmed CPM arc, with the higher percentages generated by elevating the head of the patient's bed. This disparity between true knee motion and CPM should be accounted for when designing CPM protocols for patients or investigations evaluating efficacy of CPM.

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Validation of Flexible Electrogoniometry as a Measure of Joint Kinematics

Cited by 87 publications

References 8 publications

Lower material stiffness in rupture-repaired Achilles tendon during walking: transmission-mode ultrasound for post-surgical tendon evaluation

Lower material stiffness in rupture-repaired Achilles tendon during walking: transmission-mode ultrasound for post-surgical tendon evaluation

Wrist electrogoniometry: are current mathematical correction procedures effective in reducing crosstalk in functional assessment?

Actual Knee Motion during Continuous Passive Motion Protocols is Less Than Expected

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