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The bimodal prosthesis in walking mode with the parallel spring strut unloc...
Published Online: June 6, 2024
Fig. 1 The bimodal prosthesis in walking mode with the parallel spring strut unlocked and the collapsible heel deployed. The locking joint freely rotates under the user's weight in this configuration, so it does not compress the parallel spring strut and does not change the device's overall stiffn... More about this image found in The bimodal prosthesis in walking mode with the parallel spring strut unloc...
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The bimodal prosthesis in running mode with the parallel spring strut locke...
Published Online: June 6, 2024
Fig. 2 The bimodal prosthesis in running mode with the parallel spring strut locked and the collapsible heel collapsed. The locking joint compresses the parallel spring under the user's weight in this configuration and increases the overall device stiffness for running. The collapsible heel is col... More about this image found in The bimodal prosthesis in running mode with the parallel spring strut locke...
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An exploded view of a three-dimensional model of the bimodal prosthesis. Th...
Published Online: June 6, 2024
Fig. 3 An exploded view of a three-dimensional model of the bimodal prosthesis. The parallel spring on the left is placed in thegolden cylinder and the locking joint rests on top of it. The assembly is then bolted to the modified AllPro at the top and to the rounded aluminum toeplate at the bottom... More about this image found in An exploded view of a three-dimensional model of the bimodal prosthesis. Th...
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Two side views and a front view of the motion capture marker set on a parti...
Published Online: June 6, 2024
Fig. 4 Two side views and a front view of the motion capture marker set on a participant. Six markers were applied to the pelvis, four on each thigh, two on each knee, four on each shank. On the nonprosthesis-side, two markers were applied to the malleoli, two on the metatarsal heads, and three on... More about this image found in Two side views and a front view of the motion capture marker set on a parti...
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Forefoot stiffness calculation method. The displacement axis is the line al...
Published Online: June 6, 2024
Fig. 5 Forefoot stiffness calculation method. The displacement axis is the line along the two markers shown. We calculated the dot product of the Ground Reaction Force (GRF) and the displacement axis vectors at the instant the center of pressure was closest to the displacement axis. The result is ... More about this image found in Forefoot stiffness calculation method. The displacement axis is the line al...
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Ease of device switching (between DUP and RSP) versus mode switching (betwe...
Published Online: June 6, 2024
Fig. 6 Ease of device switching (between DUP and RSP) versus mode switching (between bimodal walk and run modes) ratings for each participant on a seven-point Likert scale (where 1 is very bad, 4 is neutral, and 7 is very good) More about this image found in Ease of device switching (between DUP and RSP) versus mode switching (betwe...
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Forefoot stiffnesses of the bimodal prosthesis in walking mode and running ...
Published Online: June 6, 2024
Fig. 7 Forefoot stiffnesses of the bimodal prosthesis in walking mode and running mode for each participant. Running mode was 23–84% stiffer than walking mode. Average running mode stiffnesses for the 2.0 and 2.5 m/s running trials are shown as bars and individual trial stiffness is shown with mar... More about this image found in Forefoot stiffnesses of the bimodal prosthesis in walking mode and running ...
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Average improvement (points) in survey ratings when using the bimodal prost...
Published Online: June 6, 2024
Fig. 8 Average improvement (points) in survey ratings when using the bimodal prosthesis for each attribute and each task. On average, users rated the bimodal prosthesis higher than the RSP in walking and standing tasks, and higher than the DUP for running tasks for every attribute. Differences wer... More about this image found in Average improvement (points) in survey ratings when using the bimodal prost...
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Forefoot stiffnesses of the daily-use and running-specific prostheses (DUPs...
Published Online: June 6, 2024
Fig. 10 Forefoot stiffnesses of the daily-use and running-specific prostheses (DUPs and RSPs) for each participant. Average DUP and RSP stiffnesses for the three tested speeds (1.1, 2.0, and 2.5 m/s) are shown as bars and individual trial stiffnesses are shown with markers (o, +, and ×). The DUP a... More about this image found in Forefoot stiffnesses of the daily-use and running-specific prostheses (DUPs...
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Participant 1 (P1) center of mass power for walking (( a ), 1.1 m/s) and ru...
Published Online: June 6, 2024
Fig. 11 Participant 1 (P1) center of mass power for walking (( a ), 1.1 m/s) and running (( b ), 2.0 m/s and ( c ), 2.5 m/s) with each prosthesis. All three center of mass power curves were similar in direction during walking, though peak collision power magnitude and timing varied for the RSP and... More about this image found in Participant 1 (P1) center of mass power for walking (( a ), 1.1 m/s) and ru...
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Participant 2 (P2) center of mass power for walking (( a ), 1.1 m/s) and ru...
Published Online: June 6, 2024
Fig. 12 Participant 2 (P2) center of mass power for walking (( a ), 1.1 m/s) and running (( b ), 2.0 m/s and ( c ), 2.5 m/s) with each prosthesis. All three center of mass power curves were similar in direction during walking, though peak power magnitudes and timing varied. All three center of mas... More about this image found in Participant 2 (P2) center of mass power for walking (( a ), 1.1 m/s) and ru...
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Participant 3 (P3) center of mass power for walking (( a ), 1.1 m/s) and ru...
Published Online: June 6, 2024
Fig. 13 Participant 3 (P3) center of mass power for walking (( a ), 1.1 m/s) and running (( b ), 2.0 m/s and ( c ), 2.5 m/s) with each prosthesis. P3 was not able to complete running trials at 2.5 m/s. Daily-use prosthesis and running-specific prosthesis center of mass power curves were similar in... More about this image found in Participant 3 (P3) center of mass power for walking (( a ), 1.1 m/s) and ru...
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Participant 3 (P3) prosthesis power results for walking (( a ), 1.1 m/s) an...
Published Online: June 6, 2024
Fig. 16 Participant 3 (P3) prosthesis power results for walking (( a ), 1.1 m/s) and running (( b ), 2.0 m/s) with each prosthesis. P3 was not able to complete running trials at 2.5 m/s. More about this image found in Participant 3 (P3) prosthesis power results for walking (( a ), 1.1 m/s) an...