Evidence map›Paper›PMID 41686370›Full record

ArticleMedical & biological engineering & computing2026

Design and evaluation of a passive knee-ankle exoskeleton for walking and squatting: a musculoskeletal simulation study.

Lizhen Zhang, Mengxiang Zhu, Sai Jiang, Bo Jiang

Abstract read
PubMed Publisher
In one paragraph

Article in Medical & biological engineering & computing, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Lizhen ZhangCollege of Engineering Science and Technology, Shanghai Ocean University, No. 999 Huchenghuan Road, Shanghai, 201306, China.
Mengxiang ZhuCollege of Engineering Science and Technology, Shanghai Ocean University, No. 999 Huchenghuan Road, Shanghai, 201306, China.ORCID http://orcid.org/0009-0007-7147-4712
Sai JiangCollege of Engineering Science and Technology, Shanghai Ocean University, No. 999 Huchenghuan Road, Shanghai, 201306, China.
Bo JiangCollege of Engineering Science and Technology, Shanghai Ocean University, No. 999 Huchenghuan Road, Shanghai, 201306, China. bjiang@shou.edu.cn.

Funding

The project is supported by the National Key Research and Development Program of China Grant No. 2024YFD2400103
6 · The paper itself

Abstract

Most current passive exoskeletons assist a single movement task, and it remains a challenge to design exoskeletons for multiple movements to further reduce human metabolic rate. In this paper, a passive knee-ankle exoskeleton is designed based on the geometrical laws of the human knee and ankle joints angle changes during walking and squatting. It utilises extension springs installed between the knee and ankle joints to store and release energy during motion, thereby assisting walking and squatting. The AnyBody Modelling System(version 7.4.4, AnyBody Technology A/S, Aalborg, Denmark) is used to establish a coupled human-exoskeleton model to simulate walking and squatting tasks, and to compare and analyse key indices such as metabolic rate, joint work, and muscle activity for biomechanical verification. The simulation results show that the passive knee-ankle exoskeleton reduces the metabolic rate by 5.87% and 7.66% during walking and squatting tasks, respectively. Additionally, it reduces the total work done by the knee-ankle joints by 7.52% and 9.91%, and significantly reduces the muscle activity of the major lower limb muscles. These results demonstrate the effectiveness of the designed exoskeleton in assisting walking and squatting tasks. This study may provide new ideas for the design of other exoskeletons to assist multiple movements in the future.

Indexed as

AnkleAnkle JointExoskeleton DeviceKnee JointWalkingBiomechanical PhenomenaComputer SimulationHumansModels, BiologicalMuscle, SkeletalBiomechanical simulationHuman-exoskeleton coupling modellingPassive knee-ankle exoskeletonSquattingWalking

Identifiers

What Socratic holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.