Topological Space of the Knee Tensegrity System

Kim, Wangdo

doi:10.26717/bjstr.2018.03.000869

Cited by 3 publications

(4 citation statements)

References 14 publications

(18 reference statements)

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“…Otherwise, we can postulate that when the KIA and GRF are completely covariant when they always go together, they constitute a single "stimulus." If the knee tensegrity system [7] is capable of extracting invariants from a changing haptic stimulus, there is no reason why it should not extract invariants that seem to us highly complex. Therefore, the reaction torque caused by the foot-ground at the knee will be taken on partially by muscles surrounding the joint.…”

Section: Resultsmentioning

confidence: 99%

“…The IAK is defined by a linear combination of the two movements, S and T [5]. Then IAK must be that movement picked up among the many candidate movements on the cylindroids which are specially positioned to ground reaction force (GRP) [7]. Hence the ratio of the amplitudes about S and T is determined (Figure 1), which manifests that facts that the sensitivity of the knee joint to its orientation to both S and T of crucial importance for the elaboration of locomotion.…”

Section: The Useful Dimension Of Sensitivity Of Touch To the Kinesthesismentioning

confidence: 99%

“…To obtain values of these ratios at a special configuration having torqueless connections, i.e., knee tensegrity system [7], we need to specify first that the IAK about which the knee is required to twist with finite amplitude and the GRF on which the foot will deliver a force of finite intensity, are covariant during locomotion. Thus, the knee tensegrity system guarantees both sensitivity1=∞ and sensitivity2=0.…”

Section: Gr Up Smmentioning

confidence: 99%

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Rules for the Haptic Control of Locomotion

Kim¹

2018

SM Musculoskelet Disord

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Perceptual psychology suggested that behavior was controlled by information about the world and the self conjointly. The information has now been described. What about the control? In this article, we asserted that locomotion was controlled by rules. Surely, however, they are not rules enforced by an authority. The rules are not commands from a brain; they emerge from the human-environment system.We found that the rule is: The line of the Ground Reaction Force (GRF) vector is very close to the Knee Instantaneous Axis (KIA). It aligns the knee joint with the GRF such that the reaction forces are torqueless. The reaction to the GRF will then be carried by the whole structures on the body instead.

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Section: Resultsmentioning

confidence: 99%

Section: The Useful Dimension Of Sensitivity Of Touch To the Kinesthesismentioning

confidence: 99%

Section: Gr Up Smmentioning

confidence: 99%

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Rules for the Haptic Control of Locomotion

Kim¹

2018

SM Musculoskelet Disord

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“…The tensegrity's structure is characterized by the contact normal elements $'4 and $'5, while all the other elements are, continuous tension elements, showing specific configuration having torqueless connections (Figure 1) [33]. There are no moments at the joints because the knee tensegrity structures are entirely in involution [34,35] and, therefore, there are no bending moments in these structures, just tension and compression, and omnidirectional load distributors.…”

Section: Resultsmentioning

confidence: 99%

A Tensegrity Model of a Knee for the ACL Reconstruction

Kim

2018

BJSTR

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Reconstruction of a torn anterior cruciate ligament (ACL) cannot be successful without a properly placed tibial tunnel. Graft impingement occurs when the graft becomes trapped in the notch between the rounded ends of the femur (intercondylar notch) with the knee in extension. A surgical technique for customizing the placement of the tibial tunnel, preventing roof impingement, is presented. For strategies for avoiding graft impingement, surgeons have used two aspects, the anatomy of the ACL and associated landmarks. However, this study showed that the tunnel placement could be determined by the linear combination of two paths of rotational movements of the functional joint. The two lines of paths are referred to as a pair of conjugates and do not belong in the lines of forces in the knee complex, during locomotion.We are particularly interested in the measuring of our knee proprioception, and of our ability to perceive the change in our position through locating the instantaneous axes of the knee (IAK), that is, the pickup of our movement during locomotion. Using computer modeling of knee kinematic data obtained by MRI scans, we demonstrated a method to determine ideal placement of the tibial tunnel with respect to the IAK. Such placement in vivo has the potential to produce an isokinetic graft without risk of impingement reliably. We present conditions of a non-impingement graft based on the principle of the use of knee tensegrity model. The model introduces the new useful dimensions of sensitivity in foot loading to the knee axis alignment. We demonstrated a method to determine the ideal placement of the tibial tunnel with respect to the IAK. Such placement in vivo has the potential to produce an isokinetic graft without risk of impingement reliably.

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Locomotive functional units

Horwood¹,

Chockalingam²

2023

Clinical Biomechanics in Human Locomotion

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Topological Space of the Knee Tensegrity System

Cited by 3 publications

References 14 publications

Rules for the Haptic Control of Locomotion

Rules for the Haptic Control of Locomotion

A Tensegrity Model of a Knee for the ACL Reconstruction

Locomotive functional units

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