Effect of posterior cruciate ligament creep on muscular co-activation around knee: A pilot study

Cheng, Xionghao; Zhang, Tailai; Xin-hai, Shan; Wang, Jingyuan

doi:10.1016/j.jelekin.2014.01.005

Cited by 6 publications

(8 citation statements)

References 30 publications

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“…Nilstad et al [18] used static laxity of the ligamentous tissues as a predictor variable for knee valgus, but could not conclude this was a factor responsible for increasing likelihood of knee injuries. Others, however, have determined the laxity of the knee joint ligaments contribute to modifications of the neuromuscular control of the knee joint [19,20,21]. The musculotendinous units contribute much more to the stability of the knee joint during dynamic tasks as the forces generated via the muscle are actively engaged in movement of the joint, as well as resistance to external forces acting upon the knee [22].…”

Section: Resultsmentioning

confidence: 99%

“…When muscles become fatigued more of the load/stress is transferred to the passive viscoelastic tissues to maintain joint integrity during functional movements. Although not a functional loading scheme, the passive loading implemented in the current study has been shown to elicit creep behavior of the tissues within and surrounding the knee joint capsule [19,20]. Evidence of the influence of these mechanical creep experiments has provided mixed information, but this is also dependent upon the specific intentions of each study.…”

Section: Knee Joint Loadingmentioning

confidence: 90%

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Static loading of the knee joint results in modified single leg landing biomechanics

Olson

2020

PLoS ONE

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BackgroundExternal loading of the ligamentous tissues induces mechanical creep, which modifies neuromuscular response to perturbations. It is not well understood how ligamentous creep affects athletic performance and contributes to modifications of knee biomechanics during functional tasks. OPEN ACCESSCitation: Olson MW (2020) Static loading of the knee joint results in modified single leg landing biomechanics. PLoS ONE 15(2): e0219648. https://

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Section: Resultsmentioning

confidence: 99%

Section: Knee Joint Loadingmentioning

confidence: 90%

Static loading of the knee joint results in modified single leg landing biomechanics

Olson

2020

PLoS ONE

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“…When muscles become fatigued more of the load/stress is transferred to the passive viscoelastic tissues to maintain joint integrity during functional movements. Although not a functional loading scheme, the passive loading implemented in the current study has been shown to elicit creep behavior of the tissues within and surrounding the knee joint capsule [8,9]. Evidence of the influence of these mechanical creep experiments has provided mixed information, but this is also dependent upon the specific intentions of each study.…”

Section: Discussionmentioning

confidence: 99%

“…Evidence of the influence of these mechanical creep experiments has provided mixed information, but this is also dependent upon the specific intentions of each study. Cheng et al [8] initiated posterior loading of the tibia to elicit posterior cruciate ligament creep and reported reduced co-activation of the antagonist thigh muscles during knee extension activities. Chu et al [9], however, noted increased force and agonist activation during maximal effort knee extension exercises with no changes in antagonist (hamstring) activities.…”

Section: Discussionmentioning

confidence: 99%

“…Nilstad et al[26] used static laxity of the ligamentous tissues as a predictor variable for knee valgus, but could not conclude this was a factor responsible for increasing likelihood of knee injuries. Others, however, have determined the laxity of the knee joint ligaments contribute to modifications of the neuromuscular control of the knee joint [8,9,28]. The musculotendonous units contribute much more to the stability of the knee joint during dynamic tasks as the forces generated via the muscle are actively engaged in movement of the joint, as well as resistance to external forces acting upon the knee [30].…”

Section: Introductionmentioning

confidence: 99%

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Static Loading of the Knee Joint Results in Modified Single Leg Landing Biomechanics

Olson

2019

Preprint

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17Background: External loading of the ligamentous tissues induces mechanical creep, which 18 modifies neuromuscular response to perturbations. It is not well understood how ligamentous 19 creep affects athletic performance and contributes to modifications of knee biomechanics during 20 functional tasks. 21 Hypothesis/Purpose: The purpose of this study was to examine the mechanical and 22 neuromuscular responses to single leg drop landing perturbations before and after passive 23 loading of the knee joint. 24 Study Design: Descriptive laboratory study 25 Methods: Male (n=7) and female (n=14) participants' (21.3 ± 2.1 yrs, 1.69 ± 0.09 m, 69.3 ± 13.0 26 kg) right hip, knee, and ankle kinematics were assessed during drop landings performed from a 27 30 cm height onto a force platform before and after a 10 min creep protocol. Electromyography 28 (EMG) signals were recorded from rectus femoris (RF), vastus lateralis (VL), vastus medialis 29 (VM), semimembranosus (SM), and biceps femoris (BF) muscles. The creep protocol involved 30 fixing the knee joint at 35° during static loading with perpendicular loads of either 200 N (males) 31 or 150 N (females). Maximum, minimum, range of motion (ROM), and angular velocities were 32 assessed for the hip, knee, and ankle joints, while normalized average EMG (NAEMG), average 33 vertical ground reaction forces (aVGRF), and rate of force development (RFD) were assessed at 34 landing. Rate of force development (RFD) was calculated during the landings using ANOVAs. 35 Alpha was set at 0.05.36

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Gait Analysis Comparing Kinematic, Kinetic, and Muscle Activation Data of Modern and Conventional Total Knee Arthroplasty

et al. 2020

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Background: To provide normal knee function, a total knee arthroplasty (TKA) implant with an anatomic surface shape and an adequate sagittal position has been developed. However, it is unclear how this modern implant influences knee joint kinetics and muscle activation during a gait. Therefore, we evaluated this modern TKA prosthesis and compared it with a conventional TKA prosthesis for gait analysis in terms of kinetics and muscle activation. Methods: Subjects were patients (>60 years of age) with knee osteoarthritis who had undergone unilateral TKA. Twelve patients received the modern TKA prosthesis (group modern), and the other 12 patients received a conventional TKA prosthesis (group conventional). The subjects underwent motion capture analyses with a force plate, and kinematic and kinetic data were acquired from a 10-m gait test. Electromyography data of 6 lower limb muscles were simultaneously collected during the gait test. The 2 groups were compared using unpaired t-tests. Results: In group modern, gait speed was faster, step length was longer, and the knee flexion angle during the initial stance phase was larger. Furthermore, in group modern, the maximum knee extension moment was higher; however, the quadriceps muscle activity tended to be lower than that in group conventional. Conclusions: Gait characteristics of group modern were more like a normal gait, and knee joint extension moments were greater. This finding indicates that the quadriceps muscles can be more effectively activated, and the anterior stability function of the anterior cruciate ligament may be reproduced with the shape of the modern implant.

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Effect of posterior cruciate ligament creep on muscular co-activation around knee: A pilot study

Cited by 6 publications

References 30 publications

Static loading of the knee joint results in modified single leg landing biomechanics

Static loading of the knee joint results in modified single leg landing biomechanics

Static Loading of the Knee Joint Results in Modified Single Leg Landing Biomechanics

Gait Analysis Comparing Kinematic, Kinetic, and Muscle Activation Data of Modern and Conventional Total Knee Arthroplasty

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