Tibial Femoral Tunnel for Isokinetic Graft Placement Based on a Tensegrity Model of a Knee

Kim, Wangdo

doi:10.5772/intechopen.82237

Cited by 4 publications

(2 citation statements)

References 20 publications

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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. Phillips [36] refers to each of the contact normal and tensional loads at the IAK as spokes of the linear complex [37-40] because these lines of force resemble spokes of the bicycle wheel.…”

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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Section: Resultsmentioning

confidence: 99%

A Tensegrity Model of a Knee for the ACL Reconstruction

Kim

2018

BJSTR

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“…A good outcome in total knee arthroplasty (TKA) depends on many factors, including joint alignment, range of motion, patellar tracking, and ligament stability. It is now generally recognized that knee axes are used for both component alignment in knee arthroplasty Feng, Tsai et al [1] and ideal placement of the prosthesis during knee reconstructive surgery Kim, Chung et al [2]. Consequently, estimating of the knee axis is one of the key topics for the "2010 ASME Grand Challenge Competition to Predict in Vivo Knee Loads" Fregly, Besier et al [3].…”

Section: Introductionmentioning

confidence: 99%

Topological Space of the Knee Tensegrity System

Kim¹

2018

BJSTR

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Estimating the knee axis is crucial to both correctly aligning components in knee arthroplasty and assessing the joint kinematics. From the point of view of perceptual psychology, it is especially interesting that one can use the part-whole relationship at the knee joint as the basic theory. We characterize the concept of a "knee axis" and further the concept of "surrounding." It is now generally recognized that the whole-part relationship, and the relationships of the parts to each other play a fundamental role in producing the screw axis of the knee (SAK). We present conditions of component alignment in the arthroplasty based on the principle that the part should become a member of the whole. If any screw motion with respect to the SAK is applied to the lines of forces that form the surrounding, these forces remain within the surroundung.

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Principles of materials science

Horwood¹,

Chockalingam²

2023

Clinical Biomechanics in Human Locomotion

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Tibial Femoral Tunnel for Isokinetic Graft Placement Based on a Tensegrity Model of a Knee

Cited by 4 publications

References 20 publications

A Tensegrity Model of a Knee for the ACL Reconstruction

A Tensegrity Model of a Knee for the ACL Reconstruction

Topological Space of the Knee Tensegrity System

Principles of materials science

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