scholarly journals Association of joint moments and contact forces with early knee joint osteoarthritis after acl injury and reconstruction

2014 ◽  
Vol 22 ◽  
pp. S86-S87 ◽  
Author(s):  
E. Wellsandt ◽  
E. Gardinier ◽  
K. Manal ◽  
M. Axe ◽  
T. Buchanan ◽  
...  
Keyword(s):  
Knee Joint ◽  
Acl Injury ◽  
Contact Forces ◽  
Joint Moments

scholarly journals A Systematic Review of the Associations Between Inverse Dynamics and Musculoskeletal Modeling to Investigate Joint Loading in a Clinical Environment

2020 ◽  
Vol 8 ◽  
Author(s):  
Jana Holder ◽  
Ursula Trinler ◽  
Andrea Meurer ◽  
Felix Stief
Keyword(s):  
Knee Joint ◽  
Clinical Decision Making ◽  
Inverse Dynamics ◽  
Clinical Decision ◽  
Contact Forces ◽  
Musculoskeletal Modeling ◽  
Joint Loading ◽  
Joint Moments ◽  
Internal Joint ◽  
Joint Contact

The assessment of knee or hip joint loading by external joint moments is mainly used to draw conclusions on clinical decision making. However, the correlation between internal and external loads has not been systematically analyzed. This systematic review aims, therefore, to clarify the relationship between external and internal joint loading measures during gait. A systematic database search was performed to identify appropriate studies for inclusion. In total, 4,554 articles were identified, while 17 articles were finally included in data extraction. External joint loading parameters were calculated using the inverse dynamics approach and internal joint loading parameters by musculoskeletal modeling or instrumented prosthesis. It was found that the medial and total knee joint contact forces as well as hip joint contact forces in the first half of stance can be well predicted using external joint moments in the frontal plane, which is further improved by including the sagittal joint moment. Worse correlations were found for the peak in the second half of stance as well as for internal lateral knee joint contact forces. The estimation of external joint moments is useful for a general statement about the peak in the first half of stance or for the maximal loading. Nevertheless, when investigating diseases as valgus malalignment, the estimation of lateral knee joint contact forces is necessary for clinical decision making because external joint moments could not predict the lateral knee joint loading sufficient enough. Dependent on the clinical question, either estimating the external joint moments by inverse dynamics or internal joint contact forces by musculoskeletal modeling should be used.

Stride Length Influences Knee Joint Moments And Contact Forces During Walking In Obese Women

2008 ◽  
Vol 40 (Supplement) ◽  
pp. S339
Author(s):  
Elizabeth M. Russell ◽  
Ross H. Miller ◽  
Joseph Hamill
Keyword(s):  
Knee Joint ◽  
Stride Length ◽  
Contact Forces ◽  
Obese Women ◽  
Joint Moments

scholarly journals Calculation of ankle and knee joint moments during ACL-injury situations in soccer

2010 ◽  
Vol 2 (2) ◽  
pp. 3255-3261 ◽  
Author(s):  
Thomas Grund ◽  
Ina Reihl ◽  
Tron Krosshaug ◽  
Veit Senner ◽  
Karin Gruber
Keyword(s):  
Knee Joint ◽  
Acl Injury ◽  
Joint Moments

scholarly journals Seeing Beyond Morphology-Standardized Stress MRI to Assess Human Knee Joint Instability

Diagnostics ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1035
Author(s):  
Eva-Maria Winkelmeyer ◽  
Justus Schock ◽  
Lena Marie Wollschläger ◽  
Philipp Schad ◽  
Marc Sebastian Huppertz ◽  
...  
Keyword(s):  
Knee Joint ◽  
Imaging Modality ◽  
Cruciate Ligament ◽  
Acl Injury ◽  
Anterior Tibial Translation ◽  
Joint Stability ◽  
Anatomic Landmarks ◽  
Human Knee Joint ◽  
Custom Made ◽  
Tibial Translation

While providing the reference imaging modality for joint pathologies, MRI is focused on morphology and static configurations, thereby not fully exploiting the modality’s diagnostic capabilities. This study aimed to assess the diagnostic value of stress MRI combining imaging and loading in differentiating partial versus complete anterior cruciate ligament (ACL)-injury. Ten human cadaveric knee joint specimens were subjected to serial imaging using a 3.0T MRI scanner and a custom-made pressure-controlled loading device. Emulating the anterior-drawer test, joints were imaged before and after arthroscopic partial and complete ACL transection in the unloaded and loaded configurations using morphologic sequences. Following manual segmentations and registration of anatomic landmarks, two 3D vectors were computed between anatomic landmarks and registered coordinates. Loading-induced changes were quantified as vector lengths, angles, and projections on the x-, y-, and z-axis, related to the intact unloaded configuration, and referenced to manual measurements. Vector lengths and projections significantly increased with loading and increasing ACL injury and indicated multidimensional changes. Manual measurements confirmed gradually increasing anterior tibial translation. Beyond imaging of ligament structure and functionality, stress MRI techniques can quantify joint stability to differentiate partial and complete ACL injury and, possibly, compare surgical procedures and monitor treatment outcomes.

Functional Evaluation of a Personalized Orthosis for Knee Osteoarthritis - A Motion Capture Analysis

2021 ◽  
Author(s):  
Martin Huber ◽  
Matthew Eschbach ◽  
Kazem Kazerounian ◽  
Horea T. Ilies
Keyword(s):  
Knee Joint ◽  
Knee Osteoarthritis ◽  
Motion Capture ◽  
Inverse Dynamics ◽  
Statistical Significance ◽  
Knee Kinematics ◽  
Contact Forces ◽  
Patient Specific ◽  
Functional Evaluation ◽  
Shock Absorption

Abstract Knee osteoarthritis (OA) is a disease that compromises the cartilage inside the knee joint, resulting in pain and impaired mobility. Bracing is a common treatment, however currently prescribed braces cannot treat bicompartmental knee OA, fail to consider the muscle weakness that typically accompanies the disease, and utilize hinges that restrict the knee's natural biomechanics. We have developed and evaluated a brace which addresses these shortcomings. This process has respected three principal design goals: reducing the load experienced across the entire knee joint, generating a supportive moment to aid the muscles in shock absorption, and interfering minimally with gait kinematics. Load reduction is achieved via the compression of medial and lateral leaf springs, and magnetorheological dampers provide the supportive moment during knee loading. A novel, personalized joint mechanism replaces a traditional hinge to reduce interference with knee kinematics. Using motion capture gait analysis, we evaluated the basic functionality of a prototype device. We calculated, via inverse dynamics analysis, the reaction forces at the knee joint and the moments generated by the leg muscles during gait. Comparing these values between braced and unbraced trials allowed us to evaluate the system's effectiveness. Kinematic measurements showed the extent to which the brace interfered with natural gait characteristics. Of the three design goals: a reduction in knee contact forces was demonstrated; increased shock absorption was observed, but not to statistical significance; and natural gait was largely preserved. The techniques presented in this paper could lead to improved OA treatment through patient-specific braces.

Effects of Body Weight Modification on Internal Knee Contact Forces During Gait

2013 ◽  
Author(s):  
Allison L. Kinney ◽  
Heather K. Vincent ◽  
Melinda K. Harman ◽  
James Coburn ◽  
Darryl D. D’Lima ◽  
...  
Keyword(s):  
Body Weight ◽  
Risk Factor ◽  
Knee Joint ◽  
Inverse Dynamics ◽  
Contact Forces ◽  
Weight Changes ◽  
Body Weight Changes ◽  
Total Knee ◽  
Knee Joint Loading ◽  
Knee Load

Obesity is commonly considered a risk factor for the development of knee osteoarthritis [1]. Previous studies have shown that reductions in body weight correspond to reductions in total knee joint compressive forces (as calculated by inverse dynamics) [2–4]. A recent study showed that external knee load measurements are not strong predictors of internal knee contact forces [5]. Therefore, direct measurement of knee contact force is important for understanding how body weight changes impact knee joint loading. Force-measuring knee implants can directly measure internal knee contact forces [6].

scholarly journals Machine Learning-Based Estimation of Ground Reaction Forces and Knee Joint Kinetics from Inertial Sensors While Performing a Vertical Drop Jump

Sensors ◽  
2021 ◽  
Vol 21 (22) ◽  
pp. 7709
Author(s):  
Serena Cerfoglio ◽  
Manuela Galli ◽  
Marco Tarabini ◽  
Filippo Bertozzi ◽  
Chiarella Sforza ◽  
...  
Keyword(s):  
Neural Network ◽  
Machine Learning ◽  
Knee Joint ◽  
Field Analysis ◽  
Ground Reaction Forces ◽  
Drop Jump ◽  
Joint Moments ◽  
Data Set ◽  
Joint Kinetics ◽  
Reaction Forces

Nowadays, the use of wearable inertial-based systems together with machine learning methods opens new pathways to assess athletes’ performance. In this paper, we developed a neural network-based approach for the estimation of the Ground Reaction Forces (GRFs) and the three-dimensional knee joint moments during the first landing phase of the Vertical Drop Jump. Data were simultaneously recorded from three commercial inertial units and an optoelectronic system during the execution of 112 jumps performed by 11 healthy participants. Data were processed and sorted to obtain a time-matched dataset, and a non-linear autoregressive with external input neural network was implemented in Matlab. The network was trained through a train-test split technique, and performance was evaluated in terms of Root Mean Square Error (RMSE). The network was able to estimate the time course of GRFs and joint moments with a mean RMSE of 0.02 N/kg and 0.04 N·m/kg, respectively. Despite the comparatively restricted data set and slight boundary errors, the results supported the use of the developed method to estimate joint kinetics, opening a new perspective for the development of an in-field analysis method.

Dynamic Postural Control Two Years Following Anterior Cruciate Ligament Reconstruction in a Female Collegiate Soccer Player

2015 ◽  
Vol 20 (2) ◽  
pp. 24-29 ◽  
Author(s):  
Michael A. Samaan ◽  
Eric K. Greska ◽  
Matthew C. Hoch ◽  
Joshua T. Weinhandl ◽  
Sebastian Y. Bawab ◽  
...  
Keyword(s):  
Knee Joint ◽  
Postural Control ◽  
Acl Reconstruction ◽  
Outcome Measure ◽  
Cruciate Ligament ◽  
Acl Injury ◽  
Minimal Detectable Change ◽  
Joint Stability ◽  
Compensatory Mechanisms ◽  
Main Outcome Measure

Context:ACL injury may cause a lack of knee joint proprioception and motor control due to knee joint instability. ACL reconstruction restores knee joint stability, yet dynamic postural control may still be affected while performing dynamic tasks.Objective:To examine the effects of ACL injury and reconstruction on dynamic postural control using the Star Excursion Balance Test (SEBT) and single leg hop (SLH).Participant:One Division I female athlete.Main Outcome Measure:The athlete’s dynamic postural control, both pre- and postreconstruction, was compared with preinjury data using the method of minimal detectable change using reach distances obtained from the SEBT and hop distances from the SLH.Results:ACL injury and reconstruction affected the anterior, posteromedial, and posterolateral reach distances of the SEBT. Despite restoration of joint stability, anterior reach distance in the SEBT did not return to preinjury levels 27 months after ACL reconstruction. SLH distances decreased following injury but returned to preinjury levels 27 months after ACL reconstruction.Conclusion:Dynamic postural control and performance during the SEBT and SLH were affected by ACL injury and for extended periods of time after ACL reconstruction. Quadriceps inhibition and muscle strength of the involved limb may affect dynamic postural control both after ACL injury and reconstruction while performing the SEBT. Compensatory mechanisms at the hip and ankle may aid in performance of the SLH after reconstruction. Using baseline measurements, where possible, may help researchers better understand the effects of ACL injury and reconstruction on dynamic postural control.

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