Injuries on lower-extremity joints were caused by high impact force in parachuting landing. Knee brace was used to protect knee by restraining motion of knee. Backpack was necessary in parachuting landing and would increase lower-extremity joints injuries. This study aimed to analyze kinematics and kinetics of hip, knee and ankle for investigating multi-joint protection of knee brace for those joints in parachuting landing with backpack. Seven participants landed from 120 cm height. Kinematics and kinetics of hip, knee and ankle were analyzed. It was found that without backpack knee brace decreased angular displacements of hip (12.0%), knee (10.3%) and ankle (18.6%) on sagittal plane and angular velocities of hip (11.9%), knee (6.6%) and ankle (20.9%) on sagittal plane. With backpack, knee brace decreased angular displacement (5.5%) and angular velocity of knee (6.2%) on sagittal plane, but did not significantly influence those of hip and ankle on sagittal plane. Ground reaction force, joint moments and joint energy absorptions were not significantly influenced with knee brace. In conclusion, in parachuting landing without backpack, knee brace could provide multi-joint protection for hip, knee and ankle. In parachuting landing with backpack, knee brace could still protect knee, but could not protect hip and ankle.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.medengphy.2020.10.009 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Mild-to-moderate hip osteoarthritis and hip bracing influence hip and knee biomechanics during 90° turns while walking.
Clin Biomech (Bristol)
December 2024
BioMotion Center, Institute of Sports and Sports Science, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany. Electronic address:
Background: Turning movements are frequently encountered during daily life and require more frontal and transverse hip mobility than straight walking. Thus, analysis of turning might be an insightful addition in the evaluation of conservative treatment approaches for hip osteoarthritis patients. The study objective was to quantify the effects of mild-to-moderate symptomatic hip osteoarthritis on lower-body turning biomechanics and evaluate the effects of hip bracing in this cohort.
View Article and Find Full Text PDFEffect of knee extension constraint training on walking biomechanics 6 months after anterior cruciate ligament reconstruction: a double-blind randomized controlled clinical trial.
J Orthop Surg Res
January 2025
Department of Sports Medicine, Beijing Key Laboratory of Sports Injuries, Engineering Research Center of Sports Trauma Treatment Technology and Devices, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Ministry of Education, No.49 Huayuan North Road, Haidian District, Beijing, 100191, China.
Background: The incidence of knee osteoarthritis after anterior cruciate ligament reconstruction (ACLR) is high to 57%, and the biomechanical abnormality during walking is one of the reasons. The purpose of this study was to investigate the effect of 12 weeks of knee extension constraint training on walking biomechanics during the stance phase of injured side after ACLR.
Methods: Forty-five patients were randomly assigned to three groups based on different brace conditions from 13 weeks to 24 weeks after ACLR: experimental (brace with knee extension constraint), placebo (brace without knee extension constraint), and control (no brace).
Return to Sport After Treatment of Stable Osteochondritis Dissecans Lesions of the Knee in Adolescents: A Systematic Review.
Am J Sports Med
January 2025
Rothman Orthopaedic Institute, Philadelphia, Pennsylvania, USA.
Background: Treatment of stable osteochondritis dissecans (OCD) lesions of the knee in young patients poses the challenge of abstaining from competitive sports for months. Outcomes relevant to this patient population additionally include successful return to sport (RTS), return to the same level of sport, and the time needed to achieve both.
Purpose: To evaluate the adolescent population for RTS outcomes after treatment of stable OCD lesions of the knee and to compare RTS outcomes between patients treated nonoperatively and those who required surgery.
Outcomes of Knee Dislocations and Subluxations in Polytrauma Patients at a Major Trauma Center.
Cureus
December 2024
Department of Trauma and Orthopaedics, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, GBR.
Background This is a retrospective service evaluation of outcomes of polytrauma patients sustaining knee dislocations and subluxations within a major trauma center (MTC). Polytrauma patients with knee dislocations are complex to manage and often sustain multiple life-threatening injuries. Although treatments have progressed, no consensus remains on management timing and strategy.
View Article and Find Full Text PDFAntiphase Trunk Motion Reduces Sway Velocity and Ankle Torque During Quiet Stance.
J Appl Biomech
January 2025
College of Medicine, The Pennsylvania State University, Hershey, PA, USA.
Article Synopsis
- The study aimed to analyze how antiphase trunk motion affects quiet stance stability without changes in visual or surface conditions.
- Wearing a rigid orthotic brace that limited trunk motion, researchers compared sway characteristics across different brace conditions.
- Findings revealed that allowing antiphase motion reduced trunk and leg sway velocities and highlighted the relationship between trunk movement and ankle torque, suggesting that this motion is crucial for maintaining balance, especially in predicting postural issues due to various factors.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!