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R Moyer - One of the best experts on this subject based on the ideXlab platform.
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Combined versus individual effects of a valgus Knee Brace and lateral wedge foot orthotic during stair use in patients with Knee osteoarthritis.
Gait & posture, 2017Co-Authors: R Moyer, Trevor B. Birmingham, Colin E Dombroski, Robert Walsh, J. Robert GiffinAbstract:The aim of this study was to investigate the combined and individual biomechanical effects of a valgus Knee Brace and a lateral wedge foot orthotic during stair ascent and descent in patients with Knee osteoarthritis (OA). Thirty-five patients with varus alignment and medial Knee OA were prescribed a custom valgus Knee Brace and lateral wedge foot orthotic. Knee angles and moments in the frontal and sagittal planes were determined from 3D gait analysis completed under four randomized conditions: (1) control (no Knee Brace or foot orthotic), (2) Knee Brace, (3) foot orthotic, and (4) combined Knee Brace and foot orthotic. Additional measures included the vertical ground reaction force, trunk lean, toe out and gait speed. During the combined use of a Knee Brace and foot orthotic, significant decreases in the Knee adduction angle (2.17, 95%CI: 0.50-3.84, p=0.013) and 2nd peak EKAM (0.35, 95%CI: 0.17-0.52, p
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Effects of combined custom valgus Knee Brace and custom lateral wedge foot orthotic use during stair ascent
Osteoarthritis and Cartilage, 2014Co-Authors: R Moyer, Trevor B. Birmingham, Kendal A Marriott, Kristyn M Leitch, J.r. GiffinAbstract:s / Osteoarthritis and Cartilage 22 (2014) S57–S489 S112 173 EFFECTS OF COMBINED CUSTOM VALGUS Knee Brace AND CUSTOM LATERAL WEDGE FOOT ORTHOTIC USE DURING STAIR ASCENT R. Moyer, T. Birmingham, K. Marriott, K. Leitch, J. Giffin. Western Univ.,
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combined effects of a valgus Knee Brace and lateral wedge foot orthotic on the external Knee adduction moment in patients with varus gonarthrosis
Archives of Physical Medicine and Rehabilitation, 2013Co-Authors: R Moyer, Trevor B. Birmingham, Kristyn M Leitch, Colin E Dombroski, Robert Walsh, Thomas R Jenkyn, Robert J GiffinAbstract:Abstract Objective To test the hypothesis that a custom-fit valgus Knee Brace and custom-made lateral wedge foot orthotic will have greatest effects on decreasing the external Knee adduction moment during gait when used concurrently. Design Proof-of-concept, single test session, crossover trial. Setting Biomechanics laboratory within a tertiary care center. Participants Patients (n=16) with varus alignment and Knee osteoarthritis (OA) primarily affecting the medial compartment of the tibiofemoral joint (varus gonarthrosis). Interventions Custom-fit valgus Knee Brace and custom-made full-length lateral wedge foot orthotic. Amounts of valgus angulation and wedge height were tailored to each patient to ensure comfort. Main Outcome Measures The external Knee adduction moment (% body weight [BW]*height [Ht]), frontal plane lever arm (cm), and ground reaction force (N/kg), determined from 3-dimensional gait analysis completed under 4 randomized conditions: (1) control (no Knee Brace, no foot orthotic), (2) Knee Brace, (3) foot orthotic, and (4) Knee Brace and foot orthotic. Results The reduction in Knee adduction moment was greatest when concurrently using the Knee Brace and foot orthotic (effect sizes ranged from 0.3 to 0.4). The mean decrease in first peak Knee adduction moment compared with control was .36% BW*Ht (95% confidence interval [CI], –.66 to –.07). This was accompanied by a mean decrease in frontal plane lever arm of .59cm (95% CI, –.94 to –.25). Conclusions These findings suggest that using a custom-fit Knee Brace and custom-made foot orthotic concurrently can produce a greater overall reduction in the Knee adduction moment, through combined effects in decreasing the frontal plane lever arm.
Trevor B. Birmingham - One of the best experts on this subject based on the ideXlab platform.
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Combined versus individual effects of a valgus Knee Brace and lateral wedge foot orthotic during stair use in patients with Knee osteoarthritis.
Gait & posture, 2017Co-Authors: R Moyer, Trevor B. Birmingham, Colin E Dombroski, Robert Walsh, J. Robert GiffinAbstract:The aim of this study was to investigate the combined and individual biomechanical effects of a valgus Knee Brace and a lateral wedge foot orthotic during stair ascent and descent in patients with Knee osteoarthritis (OA). Thirty-five patients with varus alignment and medial Knee OA were prescribed a custom valgus Knee Brace and lateral wedge foot orthotic. Knee angles and moments in the frontal and sagittal planes were determined from 3D gait analysis completed under four randomized conditions: (1) control (no Knee Brace or foot orthotic), (2) Knee Brace, (3) foot orthotic, and (4) combined Knee Brace and foot orthotic. Additional measures included the vertical ground reaction force, trunk lean, toe out and gait speed. During the combined use of a Knee Brace and foot orthotic, significant decreases in the Knee adduction angle (2.17, 95%CI: 0.50-3.84, p=0.013) and 2nd peak EKAM (0.35, 95%CI: 0.17-0.52, p
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Effects of combined custom valgus Knee Brace and custom lateral wedge foot orthotic use during stair ascent
Osteoarthritis and Cartilage, 2014Co-Authors: R Moyer, Trevor B. Birmingham, Kendal A Marriott, Kristyn M Leitch, J.r. GiffinAbstract:s / Osteoarthritis and Cartilage 22 (2014) S57–S489 S112 173 EFFECTS OF COMBINED CUSTOM VALGUS Knee Brace AND CUSTOM LATERAL WEDGE FOOT ORTHOTIC USE DURING STAIR ASCENT R. Moyer, T. Birmingham, K. Marriott, K. Leitch, J. Giffin. Western Univ.,
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combined effects of a valgus Knee Brace and lateral wedge foot orthotic on the external Knee adduction moment in patients with varus gonarthrosis
Archives of Physical Medicine and Rehabilitation, 2013Co-Authors: R Moyer, Trevor B. Birmingham, Kristyn M Leitch, Colin E Dombroski, Robert Walsh, Thomas R Jenkyn, Robert J GiffinAbstract:Abstract Objective To test the hypothesis that a custom-fit valgus Knee Brace and custom-made lateral wedge foot orthotic will have greatest effects on decreasing the external Knee adduction moment during gait when used concurrently. Design Proof-of-concept, single test session, crossover trial. Setting Biomechanics laboratory within a tertiary care center. Participants Patients (n=16) with varus alignment and Knee osteoarthritis (OA) primarily affecting the medial compartment of the tibiofemoral joint (varus gonarthrosis). Interventions Custom-fit valgus Knee Brace and custom-made full-length lateral wedge foot orthotic. Amounts of valgus angulation and wedge height were tailored to each patient to ensure comfort. Main Outcome Measures The external Knee adduction moment (% body weight [BW]*height [Ht]), frontal plane lever arm (cm), and ground reaction force (N/kg), determined from 3-dimensional gait analysis completed under 4 randomized conditions: (1) control (no Knee Brace, no foot orthotic), (2) Knee Brace, (3) foot orthotic, and (4) Knee Brace and foot orthotic. Results The reduction in Knee adduction moment was greatest when concurrently using the Knee Brace and foot orthotic (effect sizes ranged from 0.3 to 0.4). The mean decrease in first peak Knee adduction moment compared with control was .36% BW*Ht (95% confidence interval [CI], –.66 to –.07). This was accompanied by a mean decrease in frontal plane lever arm of .59cm (95% CI, –.94 to –.25). Conclusions These findings suggest that using a custom-fit Knee Brace and custom-made foot orthotic concurrently can produce a greater overall reduction in the Knee adduction moment, through combined effects in decreasing the frontal plane lever arm.
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Effect of a functional Knee Brace on Knee flexion and extension strength after anterior cruciate ligament reconstruction.
Archives of Physical Medicine and Rehabilitation, 2002Co-Authors: Trevor B. Birmingham, John F. Kramer, Alexandra KirkleyAbstract:Abstract Birmingham TB, Kramer JF, Kirkley A. Effect of a functional Knee Brace on Knee flexion and extension strength after anterior cruciate ligament reconstruction. Arch Phys Med Rehabil 2002;83:1472-5. Objectives: To investigate the effect of a Knee Brace on Knee flexion and extension muscular strength of patients after anterior cruciate ligament (ACL) reconstruction and to evaluate whether the effect of the Brace depends on patient symptoms and muscular strength. Design: Repeated measures. Setting: A university-based outpatient orthopedic clinic and musculoskeletal assessment laboratory. Participants: Twenty-seven patients (14 women, 13 men; mean age, 28±11y) having undergone arthroscopically assisted ACL reconstruction by using a semitendinosus and gracilis autograft. Intervention: A custom-fit ACL functional Knee Brace. Main Outcome Measures: The Brace effect was calculated as the change in peak torque observed with the Brace, expressed as a percentage of peak torque observed without the Brace, during isokinetic concentric Knee flexion and extension movements performed at 90°/s. Patient symptoms were quantified by using a disease-specific health-related quality of life questionnaire. Results: Knee flexion strength decreased significantly with the Brace (mean Brace effect=−7.3%, P r =−.50, P Conclusions: These findings suggest that Brace effects depend on patient strength. A Brace may inhibit Knee flexion strength of stronger patients, yet result in no change or even improvements in strength of weaker patients. Future research is required to further elucidate which patients may derive most benefit or detriment from bracing. © 2002 by the American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation
J. Robert Giffin - One of the best experts on this subject based on the ideXlab platform.
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Combined versus individual effects of a valgus Knee Brace and lateral wedge foot orthotic during stair use in patients with Knee osteoarthritis.
Gait & posture, 2017Co-Authors: R Moyer, Trevor B. Birmingham, Colin E Dombroski, Robert Walsh, J. Robert GiffinAbstract:The aim of this study was to investigate the combined and individual biomechanical effects of a valgus Knee Brace and a lateral wedge foot orthotic during stair ascent and descent in patients with Knee osteoarthritis (OA). Thirty-five patients with varus alignment and medial Knee OA were prescribed a custom valgus Knee Brace and lateral wedge foot orthotic. Knee angles and moments in the frontal and sagittal planes were determined from 3D gait analysis completed under four randomized conditions: (1) control (no Knee Brace or foot orthotic), (2) Knee Brace, (3) foot orthotic, and (4) combined Knee Brace and foot orthotic. Additional measures included the vertical ground reaction force, trunk lean, toe out and gait speed. During the combined use of a Knee Brace and foot orthotic, significant decreases in the Knee adduction angle (2.17, 95%CI: 0.50-3.84, p=0.013) and 2nd peak EKAM (0.35, 95%CI: 0.17-0.52, p
Noor Azuan Abu Osman - One of the best experts on this subject based on the ideXlab platform.
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Combined effects of Knee Brace, laterally wedged insoles, and toe-out gait on Knee adduction moment and fall risk in moderate medial Knee osteoarthritis patients:
Prosthetics and orthotics international, 2018Co-Authors: Saad Jawaid Khan, Soobia Saad Khan, Juliana Usman, Abdul Halim Mokhtar, Noor Azuan Abu OsmanAbstract:Background:Knee osteoarthritis is a major contributor to the global burden of disease. There is a need of reducing Knee joint load and to improve balance and physical function among Knee osteoarthritis patients.Objectives:To test the hypothesis that toe-out gait will reduce second peak Knee adduction moment further and increase fall risk when combined with Knee Brace and laterally wedged insole in Knee osteoarthritis patients.Study design:Single visit study with repeated measures.Methods:First and second peak Knee adduction moments, fall risk and comfort level. First and second peak Knee adduction moments were determined from three-dimensional gait analysis, completed under six randomized conditions: (1) natural, (2) Knee Brace, (3) Knee Brace + toe-out gait, (4) laterally wedged insole, (5) laterally wedged insole + toe-out gait, and (6) Knee Brace + laterally wedged insole + toe-out gait. Fall risk was assessed by Biodex Balance System using three randomized stability settings: (1) static, (2) moderate ...
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The Effects of a Prophylactic Knee Brace and Two Neoprene Knee Sleeves on the Performance of Healthy Athletes: A Crossover Randomized Controlled Trial
PLoS ONE, 2012Co-Authors: Niyousha Mortaza, Ismail Ebrahimi, Ali Ashraf Jamshidi, Vahid Abdollah, Mohammad Kamali, Wan Abu Bakar Wan Abas, Noor Azuan Abu OsmanAbstract:Knee injury is one of the major problems in sports medicine, and the use of prophylactic Knee Braces is an attempt to reduce the occurrence and/or severity of injuries to the Knee joint ligament(s) without inhibiting Knee mobility. The aim of the present study was to examine the effect of one recently designed prophylactic Knee Brace and two neoprene Knee sleeves upon performance of healthy athletes. Thirty-one healthy male athletes (age=21.261.5) volunteered as participants to examine the effect of prophylactic Knee Brace/sleeves on performance using isokinetic and functional tests. All subjects were tested in four conditions in a random order: 1. nonBraced (control) 2. using a neoprene Knee sleeve 3. using a Knee sleeve with four bilateral metal supports and 4. using a prophylactic Knee Brace. The study design was a crossover, randomized, controlled trial. Subjects completed single leg vertical jump, cross-over hop, and the isokinetic Knee flexion and extension (at 60, 180, 300u/sec). Data were collected from the above tests and analyzed for jump height, cross-over hop distance, peak torque to body weight ratio and average power, respectively. Comparisons of these variables in the four testing conditions revealed no statistically significant difference (p.0.05). The selected prophylactic Brace/sleeves did not significantly inhibit athletic performance which might verify that their structure and design have caused no complication in the normal function of the Knee joint. Moreover, it could be speculated that, if the Brace or the sleeves had any limiting effect, our young healthy athletic subjects were well able to generate a mean peak torque large enough to overcome this possible restriction. Further studies are suggested to investigate the long term effect of these prophylactic Knee Brace and sleeves as well as their possible effect on the adjacent joints to the Knee.
Colin E Dombroski - One of the best experts on this subject based on the ideXlab platform.
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Combined versus individual effects of a valgus Knee Brace and lateral wedge foot orthotic during stair use in patients with Knee osteoarthritis.
Gait & posture, 2017Co-Authors: R Moyer, Trevor B. Birmingham, Colin E Dombroski, Robert Walsh, J. Robert GiffinAbstract:The aim of this study was to investigate the combined and individual biomechanical effects of a valgus Knee Brace and a lateral wedge foot orthotic during stair ascent and descent in patients with Knee osteoarthritis (OA). Thirty-five patients with varus alignment and medial Knee OA were prescribed a custom valgus Knee Brace and lateral wedge foot orthotic. Knee angles and moments in the frontal and sagittal planes were determined from 3D gait analysis completed under four randomized conditions: (1) control (no Knee Brace or foot orthotic), (2) Knee Brace, (3) foot orthotic, and (4) combined Knee Brace and foot orthotic. Additional measures included the vertical ground reaction force, trunk lean, toe out and gait speed. During the combined use of a Knee Brace and foot orthotic, significant decreases in the Knee adduction angle (2.17, 95%CI: 0.50-3.84, p=0.013) and 2nd peak EKAM (0.35, 95%CI: 0.17-0.52, p
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combined effects of a valgus Knee Brace and lateral wedge foot orthotic on the external Knee adduction moment in patients with varus gonarthrosis
Archives of Physical Medicine and Rehabilitation, 2013Co-Authors: R Moyer, Trevor B. Birmingham, Kristyn M Leitch, Colin E Dombroski, Robert Walsh, Thomas R Jenkyn, Robert J GiffinAbstract:Abstract Objective To test the hypothesis that a custom-fit valgus Knee Brace and custom-made lateral wedge foot orthotic will have greatest effects on decreasing the external Knee adduction moment during gait when used concurrently. Design Proof-of-concept, single test session, crossover trial. Setting Biomechanics laboratory within a tertiary care center. Participants Patients (n=16) with varus alignment and Knee osteoarthritis (OA) primarily affecting the medial compartment of the tibiofemoral joint (varus gonarthrosis). Interventions Custom-fit valgus Knee Brace and custom-made full-length lateral wedge foot orthotic. Amounts of valgus angulation and wedge height were tailored to each patient to ensure comfort. Main Outcome Measures The external Knee adduction moment (% body weight [BW]*height [Ht]), frontal plane lever arm (cm), and ground reaction force (N/kg), determined from 3-dimensional gait analysis completed under 4 randomized conditions: (1) control (no Knee Brace, no foot orthotic), (2) Knee Brace, (3) foot orthotic, and (4) Knee Brace and foot orthotic. Results The reduction in Knee adduction moment was greatest when concurrently using the Knee Brace and foot orthotic (effect sizes ranged from 0.3 to 0.4). The mean decrease in first peak Knee adduction moment compared with control was .36% BW*Ht (95% confidence interval [CI], –.66 to –.07). This was accompanied by a mean decrease in frontal plane lever arm of .59cm (95% CI, –.94 to –.25). Conclusions These findings suggest that using a custom-fit Knee Brace and custom-made foot orthotic concurrently can produce a greater overall reduction in the Knee adduction moment, through combined effects in decreasing the frontal plane lever arm.