Mind your step: predicting maximum ankle inversion during cutting movements in soccer

Abstract Background The application of ankle braces is an effective method for the prevention of recurrent ankle sprains. It has been proposed that the reduction of injury rates is based on the mechanical stiffness of the brace and on beneficial effects on proprioception and neuromuscular activation. Yet, how the neuromuscular system responds to the application of various types of ankle braces during highly dynamic injury-relevant movements is not well understood. Enhanced stability of the ankle joint seems especially important for people with chronic ankle instability. We therefore aimed to analyse the effects of a soft and a semi-rigid ankle brace on the execution of highly dynamic 180° turning movements in participants with and without chronic ankle instability. Methods Fifteen participants with functional ankle instability, 15 participants with functional and mechanical ankle instability and 15 healthy controls performed 180° turning movements in reaction to light signals in a cross-sectional descriptive laboratory study. Ankle joint kinematics and kinetics as well as neuromuscular activation of muscles surrounding the ankle joint were determined. Two-way repeated measures analyses of variance and post-hoc t-tests were calculated. Results Maximum ankle inversion angles and velocities were significantly reduced with the semi-rigid brace in comparison to the conditions without a brace and with the soft brace (p ≤ 0.006, d ≥ 0.303). Effect sizes of these reductions were larger in participants with chronic ankle instability than in healthy controls. Furthermore, peroneal activation levels decreased significantly with the semi-rigid brace in the 100 ms before and after ground contact. No statistically significant brace by group effects were found. Conclusions Based on these findings, we argue that people with ankle instability in particular seem to benefit from a semi-rigid ankle brace, which allows them to keep ankle inversion angles in a range that is comparable to values of healthy people. Lower ankle inversion angles and velocities with a semi-rigid brace may explain reduced injury incidences with brace application. The lack of effect of the soft brace indicates that the primary mechanism behind the reduction of inversion angles and velocities is the mechanical resistance of the brace in the frontal plane.

Download Full-text

An investigation of neural tissue involvement in ankle inversion sprains

Manual Therapy ◽

10.1054/math.1996.0268 ◽

1996 ◽

Vol 1 (4) ◽

pp. 192-197 ◽

Cited By ~ 15

Author(s):

S. Pahor ◽

R. Toppenberg

Keyword(s):

Neural Tissue ◽

Ankle Inversion

Download Full-text

Ankle Inversion Injuries

The American Journal of Sports Medicine ◽

10.1177/036354659702500110 ◽

1997 ◽

Vol 25 (1) ◽

pp. 54-58 ◽

Cited By ~ 158

Author(s):

Lars Konradsen ◽

Michael Voigt ◽

Charlotte Hojsgaard

Keyword(s):

Ankle Inversion

Download Full-text

The effects of muscle fatigue and proprioceptive deficits on the passive joint senses of ankle inversion and eversion

Isokinetics and Exercise Science ◽

10.3233/ies-2008-0303 ◽

2008 ◽

Vol 16 (2) ◽

pp. 101-105 ◽

Cited By ~ 1

Author(s):

Yang Hua Lin ◽

Chen Wei Li ◽

Li Ying Tsai ◽

Rong-Jiuan Liing

Keyword(s):

Muscle Fatigue ◽

Passive Joint ◽

Ankle Inversion

Download Full-text

Biomechanical Effect of 3D-Printed Foot Orthoses in Patients with Knee Osteoarthritis

10.21203/rs.3.rs-90724/v1 ◽

2020 ◽

Author(s):

Kuang-Wei Lin ◽

Li-Wei Chou ◽

Yi-Tien Su ◽

Shun-Hwa Wei ◽

Chen-Sheng Chen

Keyword(s):

Center Of Pressure ◽

Medial Knee ◽

Knee Oa ◽

Ankle Inversion ◽

Ankle Eversion ◽

Peak Knee ◽

Flexion Moment ◽

3D Printed ◽

Lateral Wedges ◽

Second Peak

Abstract Background: Lateral wedges comprise a common conservative treatment for medial knee osteoarthritis (OA). However, use of lateral wedges might increases the ankle eversion moment. To minimize the risk of ankle joint, lateral wedges with custom arch support are suggested. However, the manufacturing process of a custom foot orthosis (FO) is complicated, labor intensive, and time consuming. The technology of 3D printing is an ideal method for mass customization. Therefore. the purpose of this study was to develop custom FOs using 3D printing techniques and to evaluate the biomechanical effects of 3D-printed FOs in patients with medial knee OA.Methods: Fifteen patients with medial knee OA were enrolled into this study. Kinematic and kinetic data were collected during walking by using an optical motion capture system. A paired-sample t-test was conducted to compare biomechanical variables under two conditions: walking in standard shoes (Shoe) and walking in shoes embedded with 3D-printed FOs (Shoe + FO).Results: Under the Shoe + FO condition, the center of pressure at the peak knee adduction moment significantly shifted laterally by 2.71 mm compared with the Shoe condition. No significant difference in the peak knee flexion moment was observed between the two conditions. In addition, both the first and second peak knee adduction moments were significantly reduced by 4.08% and 9.09% under the Shoe + FO condition. The 3D-printed FOs did not affect the ankle eversion moment but caused a decrease in the peak ankle inversion moment.Conclusions: The 3D-printed FOs caused a decrease in the ankle inversion moment, the first and second peak knee adduction moments by changing the center of pressure path laterally. Although the decrease in the knee flexion moment from the use of 3D-printed FOs was nonsignificant, such FOs engender biomechanical changes and positively influence the biomechanics of patients with knee OA.

Download Full-text

Competitive and Recreational Running Kinematics Examined Using Principal Components Analysis

Healthcare ◽

10.3390/healthcare9101321 ◽

2021 ◽

Vol 9 (10) ◽

pp. 1321

Author(s):

Wenjing Quan ◽

Huiyu Zhou ◽

Datao Xu ◽

Shudong Li ◽

Julien S. Baker ◽

...

Keyword(s):

Principal Component Analysis ◽

Principal Components ◽

Sagittal Plane ◽

Three Dimensional ◽

Frontal Plane ◽

Principal Component ◽

Component Analysis ◽

Ankle Inversion ◽

Motion System ◽

Recreational Runners

Kinematics data are primary biomechanical parameters. A principal component analysis (PCA) of waveforms is a statistical approach used to explore patterns of variability in biomechanical curve datasets. Differences in experienced and recreational runners’ kinematic variables are still unclear. The purpose of the present study was to compare any differences in kinematics parameters for competitive runners and recreational runners using principal component analysis in the sagittal plane, frontal plane and transverse plane. Forty male runners were divided into two groups: twenty competitive runners and twenty recreational runners. A Vicon Motion System (Vicon Metrics Ltd., Oxford, UK) captured three-dimensional kinematics data during running at 3.3 m/s. The principal component analysis was used to determine the dominating variation in this model. Then, the principal component scores retained the first three principal components and were analyzed using independent t-tests. The recreational runners were found to have a smaller dorsiflexion angle, initial dorsiflexion contact angle, ankle inversion, knee adduction, range motion in the frontal knee plane and hip frontal plane. The running kinematics data were influenced by running experience. The findings from the study provide a better understanding of the kinematics variables for competitive and recreational runners. Thus, these findings might have implications for reducing running injury and improving running performance.

Download Full-text

The Inefficacy of Cushioned Column Footwear in Preventing Ankle Inversion Sprains during Basketball Participation

Journal of Novel Physiotherapies ◽

10.4172/2165-7025.1000259 ◽

2015 ◽

Vol 05 (02) ◽

Keyword(s):

Ankle Inversion

Download Full-text

Altered Ankle Kinematics and Shank-Rear-Foot Coupling in Those with Chronic Ankle Instability

Journal of Sport Rehabilitation ◽

10.1123/jsr.18.3.375 ◽

2009 ◽

Vol 18 (3) ◽

pp. 375-388 ◽

Cited By ~ 86

Author(s):

Lindsay K. Drewes ◽

Patrick O. McKeon ◽

Gabriele Paolini ◽

Patrick Riley ◽

D. Casey Kerrigan ◽

...

Keyword(s):

Outcome Measures ◽

Ankle Instability ◽

External Rotation ◽

Chronic Ankle Instability ◽

Initial Contact ◽

3 Dimensional ◽

Joint Coupling ◽

Ankle Inversion ◽

Ankle Kinematics ◽

Phase Angles

Context:Kinematic patterns during gait have not been extensively studied in relation to chronic ankle instability (CAI).Objective:To determine whether individuals with CAI demonstrate altered ankle kinematics and shank-rear-foot coupling compared with controls during walking and jogging.Design:Case control.Setting:Motion-analysis laboratory.Participants:7 participants (3 men, 4 women) suffering from CAI (age 24.6 ± 4.2 y, height 172.6 ± 9.4 cm, mass 70.9 ± 8.1 kg) and 7 (3 men, 4 women) healthy, matched controls (age 24.7 ± 4.5 y, height 168.2 ± 5.9 cm, mass 66.5 ± 9.8 kg).Interventions:Subjects walked and jogged on a treadmill while 3-dimensional kinematics of the lower extremities were captured.Main Outcome Measures:The positions of rear-foot inversion–eversion and shank rotation were calculated throughout the gait cycle. Continuous relative-phase angles between these segments were calculated to assess coupling.Results:The CAI group demonstrated more rear-foot inversion and shank external rotation during walking and jogging. There were differences between groups in shank-rear-foot coupling during terminal swing at both speeds.Conclusions:Altered ankle kinematics and joint coupling during the terminal-swing phase of gait may predispose a population with CAI to ankle-inversion injuries. Less coordinated movement during gait may be an indication of altered neuromuscular recruitment of the musculature surrounding the ankle as the foot is being positioned for initial contact.

Download Full-text