Active knee joint exoskeleton for stair ascent augmentation

2020 ◽  
Vol 64 (3) ◽  
Author(s):  
Zongwei Zhang ◽  
Jizhuang Fan ◽  
Hongzhe Jin ◽  
Tianjiao Zheng ◽  
Sikai Zhao ◽  
...  
Keyword(s):  
Knee Joint ◽  
Stair Ascent

INTRA-SESSION RELIABILITY AND REPEATABILITY OF KNEE KINEMATICS IN SUBJECTS WITH ACL DEFICIENCY DURING STAIR ASCENT

2017 ◽  
Vol 17 (06) ◽  
pp. 1750092
Author(s):  
MARYAM HAJIZADEH ◽  
ALIREZA HASHEMI OSKOUEI ◽  
FARZAN GHALICHI ◽  
GISELA SOLE
Keyword(s):  
Knee Joint ◽  
Cruciate Ligament ◽  
Intraclass Correlation ◽  
Force Plate ◽  
Three Dimensional ◽  
Knee Kinematics ◽  
Compensatory Mechanisms ◽  
Joint Rotation ◽  
Stair Ascent ◽  
Acl Deficient

Analysis of knee kinematics and ground reaction forces (GRFs) is widely used to determine compensatory mechanisms of people with anterior cruciate ligament deficiency (ACLD). However, the practicality of the measurements is subject to their reliability during different trials. This study aims to determine the reliability and repeatability of knee joint rotations and GRFs in people with ACLD during stair ascent. Eight participants with unilateral ACL-deficient knees performed five trials of stair ascent with each leg. The movements were captured by VICON motion analysis system, and GRF components were recorded using force plate. Three-dimensional tibiofemoral joint rotations were calculated. Intraclass correlation coefficient (ICC), standard error of measurement (SEM) and coefficient of multiple correlation (CMC) were calculated ACL-deficient legs showed lower absolute reliability during swing ([Formula: see text]–6.4) than stance phase ([Formula: see text]–2.2) for knee joint rotations. Moderate to high average measure ICCs (0.59–0.98), relative reliability, were achieved for injured and uninjured sides. The results also demonstrated high repeatability for the knee joint rotation ([Formula: see text]–0.97) and GRF ([Formula: see text]–0.99). The outcomes of this study confirmed the consistency and repeatability of the knee joint rotations and GRFs in ACL-deficient subjects. Additionally, ACL-deficient legs exhibited similar levels of reliability and repeatability compared to contralateral legs.

scholarly journals Multifunctional above-knee prosthesis for stairs' walking

1987 ◽  
Vol 11 (3) ◽  
pp. 139-145 ◽  
Author(s):  
K. Koganezawa ◽  
H. Fujimoto ◽  
I. Kato
Keyword(s):  
Knee Joint ◽  
Ankle Joint ◽  
Stance Phase ◽  
Knee Prosthesis ◽  
Power Sources ◽  
Stair Ascent ◽  
Level Walking ◽  
External Power ◽  
Leg Prosthesis ◽  
Full Body

The multifunctional above-knee prosthesis WLP-7R (Waseda Leg Prosthesis - type 7 Refined) described in this study allows amputees to descend and ascend stairs with no external power sources. With the hydraulic circuit mounted in the shank, the ankle joint and the knee joint mutually conterbalance during stance phase in stair walking as well as level walking so that the following performances are obtained. The yielding (flexing) of the knee joint is prevented and smooth advance from stance-phase to swing-phase is realized in level walking. The gradual yielding of the knee joint and the ankle joint while sustaining full body weight is realized in stair descent. Reciprocal stepping with sound and disabled legs during stair ascent is also realised although the powerful extension of the knee joint during stance phase is not possible. The performance of the WLP-7R was examined by a walking experiment in which amputees could descend and ascend the stairs as well as walk on a flat surface after approximately one hour's training.

Passive Knee Joint Mechanism of Transfemoral Prosthesis for Stair Ascent

2015 ◽  
Vol 2015.53 (0) ◽  
pp. 1-2
Author(s):  
Koh INOUE ◽  
Ryuichi HARADA ◽  
Takahiro WADA ◽  
Keisuke SUZUKI ◽  
Shin'ichi TACHIWANA
Keyword(s):  
Knee Joint ◽  
Stair Ascent ◽  
Joint Mechanism ◽  
Transfemoral Prosthesis

Added Load Alters Ankle And Knee Joint Moments During Stair Ascent

2019 ◽  
Vol 51 (Supplement) ◽  
pp. 686
Author(s):  
William G. Robinson ◽  
Alexis K. Nelson ◽  
Jake A. Melaro ◽  
Alexander M. Carnall ◽  
Rachael Ard ◽  
...  
Keyword(s):  
Knee Joint ◽  
Joint Moments ◽  
Stair Ascent

scholarly journals Knee Joint Loads and Surrounding Muscle Forces during Stair Ascent in Patients with Total Knee Replacement

PLoS ONE ◽  
2016 ◽  
Vol 11 (6) ◽  
pp. e0156282 ◽  
Author(s):  
Robert Rasnick ◽  
Tyler Standifird ◽  
Jeffrey A. Reinbolt ◽  
Harold E. Cates ◽  
Songning Zhang
Keyword(s):  
Knee Joint ◽  
Total Knee Replacement ◽  
Knee Replacement ◽  
Muscle Forces ◽  
Stair Ascent ◽  
Total Knee ◽  
Joint Loads

Stair ascent with an innovative microprocessor-controlled exoprosthetic knee joint

2012 ◽  
Vol 57 (6) ◽  
Author(s):  
Malte Bellmann ◽  
Thomas Schmalz ◽  
Eva Ludwigs ◽  
Siegmar Blumentritt
Keyword(s):  
Knee Joint ◽  
Stair Ascent
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