élongation ligament

The relationships between ligament elongation and wrist position should further our understanding of ligament function, provide insight into the potential effects of dorsal wrist incisions on specific wrist ranges of motion, and serve as a basis for modeling of the wrist. Elongation of the dorsal carpal ligaments: a computational study of in vivo carpal kinematics J Hand Surg Am. 2012 Jul;37(7 …

To achieve this, elongation of the PCL was examined in six subjects with good clinical and functional outcomes using 3D kinematics reconstructed from video-fluoroscopy, together with multibody modelling of the knee. Here, length-change patterns of the ligament bundles were tracked throughout complete cycles of level walking and stair descent …

Because of ligament nonuniformity in relation to joint angles, elongation in loaded ligaments is best measured in two or even three dimensions using speckle techniques or image correlation so that local variations in strain can be appreciated. 4.4.5.2 In-Vivo Approaches. As indicated above, it is now possible to determine the displacements and strains present within the collagenous soft …

The purposes of this study were: (1) to measure the distances between the insertion sites of selected ankle ligament fibers, (2) to measure the force-elongation characteristics of isolated bone-ligament-bone preparations, and (3) to relate the force measurements to angular positions of the ankle. The findings can be used to discuss clinically the correlation between possible ligament injuries …

The primary aim of this study was to assess the effects of total knee arthroplasty (TKA) implant design on collateral ligament elongation patterns that occur during level walking, downhill walking, and stair descent. Using a moving fluoroscope, tibiofemoral kinematics were captured in three groups of patients with different TKA implant designs, including posterior stabilized, medial stabilized …

Johanna Buschmann, Gabriella Meier Bürgisser, in Biomechanics of Tendons and Ligaments, 2017. 4.2.1.2 Stiffness. The stiffness in N/mm is another structural property of the tendon and ligament besides the load until failure.It is the slope in the load– elongation curve.If not otherwise mentioned, the slope in the linear region of the load–elongation curve is used, however, some …

Unfavorable clinical outcomes after medial patellofemoral ligament (MPFL) reconstruction, such as early osteoarthritis of the patellofemoral joint, were considered to be associate with tunnel malpositioning. Length change studies have found that small changes in the femoral position can cause great changes in elongation trends. Further studying the MPFL kinematics may help us to understand the …

Creep is defined as the deformation, or elongation, of a ligament over time under a constant load or stress. Load relaxation refers to a decrease in stress of the tissue over time when the ligament is subjected to a constant elongation. 15-17. LIGAMENT RESPONSE TO INJURY. When ligaments are exposed to loading over an extended period of time, they increase in mass, stiffness, and load to …