scholarly journals Estimation of the Knee Adduction Moment and Joint Contact Force during Daily Living Activities Using Inertial Motion Capture

Sensors ◽  
2019 ◽  
Vol 19 (7) ◽  
pp. 1681 ◽  
Author(s):  
Jason Konrath ◽  
Angelos Karatsidis ◽  
H. Schepers ◽  
Giovanni Bellusci ◽  
Mark de Zee ◽  
...  
Keyword(s):  
Motion Capture ◽  
Contact Force ◽  
Daily Living ◽  
Contact Forces ◽  
Knee Adduction Moment ◽  
Inertial Motion ◽  
Daily Living Activities ◽  
Tibiofemoral Joint ◽  
Joint Contact Force ◽  
Joint Contact

Knee osteoarthritis is a major cause of pain and disability in the elderly population with many daily living activities being difficult to perform as a result of this disease. The present study aimed to estimate the knee adduction moment and tibiofemoral joint contact force during daily living activities using a musculoskeletal model with inertial motion capture derived kinematics in an elderly population. Eight elderly participants were instrumented with 17 inertial measurement units, as well as 53 opto-reflective markers affixed to anatomical landmarks. Participants performed stair ascent, stair descent, and sit-to-stand movements while both motion capture methods were synchronously recorded. A musculoskeletal model containing 39 degrees-of-freedom was used to estimate the knee adduction moment and tibiofemoral joint contact force. Strong to excellent Pearson correlation coefficients were found for the IMC-derived kinematics across the daily living tasks with root mean square errors (RMSE) between 3° and 7°. Furthermore, moderate to strong Pearson correlation coefficients were found in the knee adduction moment and tibiofemoral joint contact forces with RMSE between 0.006–0.014 body weight × body height and 0.4 to 1 body weights, respectively. These findings demonstrate that inertial motion capture may be used to estimate knee adduction moments and tibiofemoral contact forces with comparable accuracy to optical motion capture.

Prediction of Knee Joint Contact Forces From External Measures Using Principal Component Prediction and Reconstruction

2018 ◽  
Vol 34 (5) ◽  
pp. 419-423 ◽  
Author(s):  
Christopher M. Saliba ◽  
Allison L. Clouthier ◽  
Scott C.E. Brandon ◽  
Michael J. Rainbow ◽  
Kevin J. Deluzio
Keyword(s):  
Knee Joint ◽  
Knee Osteoarthritis ◽  
Real Time ◽  
Contact Force ◽  
Haptic Feedback ◽  
Principal Component ◽  
Contact Forces ◽  
Statistical Regression ◽  
Joint Contact Force ◽  
Joint Contact

Abnormal loading of the knee joint contributes to the pathogenesis of knee osteoarthritis. Gait retraining is a noninvasive intervention that aims to reduce knee loads by providing audible, visual, or haptic feedback of gait parameters. The computational expense of joint contact force prediction has limited real-time feedback to surrogate measures of the contact force, such as the knee adduction moment. We developed a method to predict knee joint contact forces using motion analysis and a statistical regression model that can be implemented in near real-time. Gait waveform variables were deconstructed using principal component analysis, and a linear regression was used to predict the principal component scores of the contact force waveforms. Knee joint contact force waveforms were reconstructed using the predicted scores. We tested our method using a heterogenous population of asymptomatic controls and subjects with knee osteoarthritis. The reconstructed contact force waveforms had mean (SD) root mean square differences of 0.17 (0.05) bodyweight compared with the contact forces predicted by a musculoskeletal model. Our method successfully predicted subject-specific shape features of contact force waveforms and is a potentially powerful tool in biofeedback and clinical gait analysis.

scholarly journals Immediate Effects of Medially Posted Insoles on Lower Limb Joint Contact Forces in Adult Acquired Flatfoot: A Pilot Study

2020 ◽  
Vol 17 (7) ◽  
pp. 2226 ◽  
Author(s):  
Yinghu Peng ◽  
Duo Wai-Chi Wong ◽  
Yan Wang ◽  
Tony Lin-Wei Chen ◽  
Qitao Tan ◽  
...  
Keyword(s):  
Contact Force ◽  
Lower Limb ◽  
Random Order ◽  
Contact Forces ◽  
Knee Adduction Moment ◽  
Joint Mechanics ◽  
Joint Force ◽  
Ankle Eversion ◽  
Peak Knee ◽  
Joint Contact

Flatfoot is linked to secondary lower limb joint problems, such as patellofemoral pain. This study aimed to investigate the influence of medial posting insoles on the joint mechanics of the lower extremity in adults with flatfoot. Gait analysis was performed on fifteen young adults with flatfoot under two conditions: walking with shoes and foot orthoses (WSFO), and walking with shoes (WS) in random order. The data collected by a vicon system were used to drive the musculoskeletal model to estimate the hip, patellofemoral, ankle, medial and lateral tibiofemoral joint contact forces. The joint contact forces in WSFO and WS conditions were compared. Compared to the WS group, the second peak patellofemoral contact force (p < 0.05) and the peak ankle contact force (p < 0.05) were significantly lower in the WSFO group by 10.2% and 6.8%, respectively. The foot orthosis significantly reduced the peak ankle eversion angle (p < 0.05) and ankle eversion moment (p < 0.05); however, the peak knee adduction moment increased (p < 0.05). The reduction in the patellofemoral joint force and ankle contact force could potentially inhibit flatfoot-induced lower limb joint problems, despite a greater knee adduction moment.

scholarly journals Positive Correlation Between the Hip Adduction Moment Impulse During the Stance Phase and the Hip Joint Contact Force Impulse

2020 ◽  
Author(s):  
Takuma Inai ◽  
Tomoya Takabayashi ◽  
Mutsuaki Edama ◽  
Masayoshi Kubo
Keyword(s):  
Contact Force ◽  
Hip Joint ◽  
Stance Phase ◽  
Hip Osteoarthritis ◽  
Contact Forces ◽  
Joint Contact Force ◽  
Joint Contact ◽  
Hip Joint Contact Force ◽  
The Relationship ◽  
Second Peak

Abstract Background: Excessive mechanical loading, in the form of the joint contact force, has been reported to promote osteoarthritis in vitro and vivo in mice. However, it has also been reported that an excessive hip adduction moment impulse during the stance phase likely contributes to the progression of hip osteoarthritis. The relationship between the hip adduction moment impulse and hip joint contact force (impulse, and first and second peaks) during the stance phase is unclear. The objective of the present study was to clarify this relationship. Methods: A public dataset pertaining to the overground walking of 84 healthy adults, in which the participants walked at a self-selected speed, was considered. The data of three trials for each participant were analyzed. The relationship between the hip adduction moment and hip joint contact force, in terms of the impulse and first and second peaks, during the stance phase was evaluated using correlation coefficients.Results: The hip adduction moment impulse during the stance phase was positively correlated with the hip joint contact force impulse and not correlated with the first and second peak hip joint contact forces. Furthermore, the first and second peak hip adduction moments during the stance phase were positively correlated with the first and second peak hip joint contact forces, respectively. Conclusions: These findings indicate that the hip joint contact force impulse during the stance phase can be used as an index to determine the risk factors for the progression of hip osteoarthritis.

The effects of incremental ulnar styloid osteotomies on distal radioulnar joint stability: a biomechanical cadaveric study

2019 ◽  
Vol 44 (5) ◽  
pp. 510-516
Author(s):  
Adnan N. Cheema ◽  
Agnes Z. Dardas ◽  
Michael W. Hast ◽  
Benjamin L. Gray
Keyword(s):  
Contact Force ◽  
Distal Radioulnar Joint ◽  
Contact Forces ◽  
Joint Stability ◽  
Ulnar Styloid ◽  
Radioulnar Joint ◽  
Joint Contact Force ◽  
Joint Gap ◽  
Joint Contact ◽  
Fresh Frozen

The purpose of this study was to systematically quantify distal radioulnar joint stability with a cadaveric model, using radiographic and joint contact force measurements. Six fresh-frozen cadavers underwent sequential ulnar styloid osteotomies. Posteroanterior and lateral stress radiographs were obtained and joint contact forces and areas were measured. Posteroanterior radiographs showed a significant increase in the distal radioulnar joint gap after osteotomy of the base of the ulnar styloid. Contact force and contact area measurements were not significantly different. We conclude that fractures that involve the ulnar styloid base should be considered for operative fixation when carrying out open reduction and internal fixation of fractures of the distal radius.

scholarly journals Comparative study on the tensile performance of box frames constructed by keyed joints and dovetail joints

BioResources ◽  
2020 ◽  
Vol 15 (4) ◽  
pp. 9291-9302
Author(s):  
Shuo Wang ◽  
Lu Chen ◽  
Li Jun Xu ◽  
Hao Guan ◽  
Sheng Zan Yan ◽  
...  
Keyword(s):  
Contact Force ◽  
Failure Modes ◽  
Good Condition ◽  
Groove Depth ◽  
Contact Forces ◽  
Joint Spacing ◽  
Joint Contact Force ◽  
Common Structure ◽  
Joint Contact ◽  
The Stability

The box frame is a common structure in modern furniture, especially for cabinets. Accordingly, the joint contact force of the frame is important in evaluating the stability of classified furniture. In this study, a new type of keyed joint was proposed to alter the dovetail joint used in box frame structures. The tensile strength of the dovetail joint and the keyed joint in the frame were evaluated, and the contact forces and failure modes of these two joints were compared. Three levels (T1, T2, and T3) were proposed for the ratio of groove depth (D) to inclined contact surface height (H), under the condition of the same joint spacing and inclination angle considering the effects of keyed joint size on the contact force. Meanwhile, experimental analysis was performed on both sides (S1 and S2) of the dovetail joint. Results showed that the contact force of the joint under the gluing condition decreased in the order of S2 > T2 > T3 > S1 > T1. In terms of failure modes, the keyed joint could be maintained in good condition, whereas failure of the dovetail joint always occurred at the root of the tenon in the S1 direction.

Hip muscle and joint contact forces before, 6 and 12 months after minimally invasive periacetabular osteotomy

2020 ◽  
pp. 112070002092541
Author(s):  
Henrik Sørensen ◽  
Ole Skalshøi ◽  
Dennis Brandborg Nielsen ◽  
Julie Sandell Jacobsen ◽  
Kjeld Søballe ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Contact Force ◽  
Hip Joint ◽  
Muscle Function ◽  
Hip Dysplasia ◽  
Periacetabular Osteotomy ◽  
Contact Forces ◽  
Joint Contact Force ◽  
Hip Muscle ◽  
Joint Contact

Background: Previous studies on different periacetabular osteotomy approaches for correction of hip dysplasia disagree on the time course of normalisation of muscle function postoperatively, some stating that especially hip flexor function is not fully normalised after 12 months. Purpose: The purpose of this study was to evaluate hip function during walking before, and 6 and 12 months after minimally invasive periacetabular osteotomy. Methods: Using conventional 3D inverse dynamics followed by static optimisation, we calculated hip net joint moment and angular impulse, as well as individual muscle forces and hip joint contact force, during walking for 32 patients with hip dysplasia and 32 matched controls. Results: None of the extensor and abductor measures were significantly different between controls and patients tested preoperatively, nor between any of the 3 time points patients were tested. For all of the flexor measures, patients’ preoperative values were lower than controls’, but had increased to values above the controls 6 months postoperatively. Conclusion: Hip muscle function during walking seemed normalised after 6 months after minimally invasive periacetabular osteotomy, while joint contact force did not fully normalise until 12 months postoperatively, perhaps because the hip joint structures need a longer time to heal than the muscles and a potential pain alleviating strategy was still in effect. Trial registry: Movement pattern in patients with hip dysplasia https://clinicaltrials.gov/ct2/show/NCT01344421 , NCT01344421.

THE EFFECTS OF SCOLIOSIS ON SPINAL MUSCLES LENGTH AND JOINT CONTACT FORCES

2018 ◽  
Vol 18 (06) ◽  
pp. 1850022
Author(s):  
AZADEH NADI ◽  
MOHAMMAD TAGHI KARIMI ◽  
FRANCIS FATOYE ◽  
AZADEH JAFARI
Keyword(s):  
Contact Force ◽  
Force Plate ◽  
Normal Subjects ◽  
Contact Forces ◽  
Trunk Muscles ◽  
Healthy Children ◽  
Body Parts ◽  
Kinematic Parameters ◽  
Joint Contact Force ◽  
Joint Contact

Background: Although there are a few studies on kinetic and kinematic parameters of scoliotic subjects, it is still controversial whether gait performance of scoliotic subjects differs from that of normal subjects or not. Moreover, there is lack of information regarding joint contact force of scoliotic on convex and concave sides. Therefore, this study examined these issues. Method: Two groups of children (healthy and children with scoliosis, each group consisting of 5 subjects) participated in this study. The force applied on leg and motions of body parts were evaluated using a Kistler force plate and motion analysis system, respectively. Joint contact forces, muscles length were evaluated in both groups and on both sides (in scoliotic subjects) with OpenSim software. The difference in the parameters between healthy children and scoliotic subjects, and also concave and convex sides, was determined using the independent [Formula: see text] test. [Formula: see text] value was set at [Formula: see text]. Results: The results of this study showed that there was no difference between the forces applied on the leg, range of motions of the joints (hip, knee, ankle, pelvic and trunk), muscles length and joint contact force, neither between normal and children with scoliosis, nor between concave and convex sides [Formula: see text]. Conclusion: The findings revealed that scoliosis deformity with curve less than [Formula: see text] does not have any significant effect on joint contact force, kinetic and kinematic parameters.

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