In Vivo Function of the Posterior Cruciate Ligament during                     Weightbearing Knee Flexion

DeFrate, Louis E.; Gill, Thomas J.; Li, Guoan

doi:10.1177/0363546504264896

Cited by 64 publications

(79 citation statements)

References 32 publications

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“…This is in line with measurements obtained in vivo (Hosseini et al 2009;Yoo et al 2010). Concerning the PCL, our results are in agreement with in vivo studies of Li et al (2004) and DeFrate et al (2004) that reported an elongation of the PCL bundles. The LCL was found to shorten, consistently with the pattern shown by Bergamini and co-authors and by ex vivo studies of Harfe et al (1998).…”

Section: Computer Methods In Biomechanics and Biomedical Engineeringsupporting

confidence: 93%

A dynamic multibody model of the physiological knee to predict internal loads during movement in gravitational field

Bersini

Sansone

Frigo

2015

Computer Methods in Biomechanics and Biomedical Engineering

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Obtaining tibio-femoral (TF) contact forces, ligament deformations and loads during daily life motor tasks would be useful to better understand the aetiopathogenesis of knee joint diseases or the effects of ligament reconstruction and knee arthroplasty. However, methods to obtain this information are either too simplified or too computationally demanding to be used for clinical application. A multibody dynamic model of the lower limb reproducing knee joint contact surfaces and ligaments was developed on the basis of magnetic resonance imaging. Several clinically relevant conditions were simulated, including resistance to hyperextension, varus-valgus stability, anterior -posterior drawer, loaded squat movement. Quadriceps force, ligament deformations and loads, and TF contact forces were computed. During anterior drawer test the anterior cruciate ligament (ACL) was maximally loaded when the knee was extended (392 N) while the posterior cruciate ligament (PCL) was much more stressed during posterior drawer when the knee was flexed (319 N). The simulated loaded squat revealed that the anterior fibres of ACL become inactive after 608 of flexion in conjunction with PCL anterior bundle activation, while most components of the collateral ligaments exhibit limited length changes. Maximum quadriceps and TF forces achieved 3.2 and 4.2 body weight, respectively. The possibility to easily manage model parameters and the low computational cost of each simulation represent key points of the present project. The obtained results are consistent with in vivo measurements, suggesting that the model can be used to simulate complex and clinically relevant exercises.

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Section: Computer Methods In Biomechanics and Biomedical Engineeringsupporting

confidence: 93%

A dynamic multibody model of the physiological knee to predict internal loads during movement in gravitational field

Bersini

Sansone

Frigo

2015

Computer Methods in Biomechanics and Biomedical Engineering

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“…This dependency has been already evidenced ex vivo [11,24] and by using a simulation approach [23]. Conversely, in vivo studies showed an elongation of the PCL central bundle [25], as well as of the antero-medial and postero-lateral bundles [14]. Since the patterns of ligament length variation depend on the kinematics of the joint [23,26], the lack of agreement between in vivo and ex vivo, as well as simulation results might be attributed to different amounts of tibial internal rotation during knee flexion, which the referenced papers do not report.…”

Section: Discussionmentioning

confidence: 65%

Tibio-femoral joint constraints for bone pose estimation during movement using multi-body optimization

Bergamini¹,

Pillet²,

Hausselle³

et al. 2011

Gait & Posture

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“…In future studies, this 3D anatomic AJC model will be extended to investigate in vivo ligament elongation and articulate cartilage contact kinematics. [29][30][31] In summary, a new fluoroscopic and MR imaging technique was used to investigate the in vivo kinematics of the talocrural and subtalar joints. The results concluded that there is strong coupling between the talocrural and subtalar joints during normal function of the AJC.…”

Section: Discussionmentioning

confidence: 99%

Six DOF in vivo kinematics of the ankle joint complex: Application of a combined dual‐orthogonal fluoroscopic and magnetic resonance imaging technique

Wan

Rubash

et al. 2006

Journal Orthopaedic Research

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146

128

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Accurate knowledge of in vivo ankle joint complex (AJC) biomechanics is critical for understanding AJC disease states and for improvement of surgical treatments. This study investigated 6 degrees-of-freedom (DOF) in vivo kinematics of the human AJC using a combined dual-orthogonal fluoroscopic and magnetic resonance imaging (MRI) technique. Five healthy ankles of living subjects were studied during three in vivo activities of the foot, including maximum plantarflexion and dorsiflexion, maximum supination and pronation, and three weight-bearing positions in simulated stance phases of walking. A three-dimensional (3D) computer model of the AJC (including tibia, fibula, talus, and calcaneus) was constructed using 3D MR images of the foot. The in vivo AJC position at each selected position of the foot was captured using two orthogonally positioned fluoroscopes. In vivo AJC motion could then be reproduced by coupling the orthogonal images with the 3D AJC model in a virtual dual-orthogonal fluoroscopic system. From maximum dorsiflexion to plantarflexion, the arc of motion of the talocrural joint (47.5 AE 2.28) was significantly larger than that of the subtalar joint (3.1 AE 6.88). Both joints showed similar degrees of internalexternal and inversion-eversion rotation. From maximum supination to pronation, all rotations and translations of the subtalar joint were significantly larger than those of the talocrural joint. From heel strike to midstance, the plantarflexion contribution from the talocrural joint (9.1 AE 5.38) was significantly larger than that of the subtalar joint (À0.9 AE 1.28). From midstance to toe off, internal rotation and inversion of the subtalar joint (12.3 AE 8.38 and À10.7 AE 3.88, respectively) were significantly larger than those of the talocrural joint (À1.6 AE 5.98 and À1.7 AE 2.78). Strong kinematic coupling between the talocrural and subtalar joints was observed during in vivo AJC activities. The contribution of the talocrural joint to active dorsi-plantarflexion was higher than that of the subtalar joint, whereas the contribution of the subtalar joint to active supination-pronation was higher than that of the talocrural joint. In addition, the talocrural joint demonstrated larger motion during the early part of stance phase while the subtalar joint contributes more motion during the later part of stance phase. The results add quantitative data to an in vivo database of normals that can be used in clinical diagnosis, treatment, and evaluation of the AJC after injuries. ß

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In Vivo Function of the Posterior Cruciate Ligament during Weightbearing Knee Flexion

Abstract: During reconstruction, the tunnels and graft may need to be placed such that the multidimensional deformation of the intact posterior cruciate ligament is reproduced.

Cited by 64 publications

References 32 publications

A dynamic multibody model of the physiological knee to predict internal loads during movement in gravitational field

A dynamic multibody model of the physiological knee to predict internal loads during movement in gravitational field

Tibio-femoral joint constraints for bone pose estimation during movement using multi-body optimization

Six DOF in vivo kinematics of the ankle joint complex: Application of a combined dual‐orthogonal fluoroscopic and magnetic resonance imaging technique

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