Anterior cruciate ligament tibial insertion site is elliptical or triangular shaped in healthy young adults: high-resolution 3-T MRI analysis

Tashiro, Yasutaka; Lucidi, Gian Andrea; Gale, Tom; Nagai, Kazuo; Herbst, Elmar; Irrgang, James J.; Nakashima, Yasuharu; Anderst, William; Fu, Freddie H.

doi:10.1007/s00167-017-4607-6

Cited by 29 publications

(38 citation statements)

References 41 publications

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“…The sensitivity analysis of ACL relative elongation was performed by changing the ratio of the point that divided into AMB and PLB (Supplementary Material). The validity of this technique for identifying AMB and PLB tibial insertions was confirmed using a previously reported data set . The AMB and PLB centroids were positioned at the centroid of the AMB and PLB respective areas (Fig.…”

Section: Methodssupporting

confidence: 53%

“…Moreover, the sample size in the current study is similar in size to most previous studies that investigated in vivo ACL strain or elongation . Second, due to the inability to differentiate AMB and PLB insertions on MRI, the insertion sites were calculated according previous reports on the anatomy of the ACL insertions and validated using a previously reported data set . A third limitation is that the ACL length was normalized by the length at static knee full extension during MRI; thus only relative ACL elongations could be determined.…”

Section: Discussionmentioning

confidence: 99%

“…The division of AMB and PLB insertions was then performed based on previous reports on the anatomy of the ACL insertions . The femoral ACL insertion was divided into AMB and PLB at the middle point (50%/50%) of the principle long axis of whole ACL insertion using a custom MATLAB (The MathWorks, Inc., Natick, MA) code, as femoral ACL insertion was an oval shape (Fig.…”

Section: Methodsmentioning

confidence: 99%

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The Complex Relationship Between In Vivo ACL Elongation and Knee Kinematics During Walking and Running

Nagai

Gale

Chiba

et al. 2019

Journal Orthopaedic Research

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In vivo anterior cruciate ligament (ACL) bundle (anteromedial bundle [AMB] and posterolateral bundle [PLB]) relative elongation during walking and running remain unknown. In this study, we aimed to investigate in vivo ACL relative elongation over the full gait cycle during walking and running. Ten healthy volunteers walked and ran at a self-selected pace on an instrumented treadmill while biplane radiographs of the knee were acquired at 100 Hz (walking) and 150 Hz (running). Tibiofemoral kinematics were determined using a validated model-based tracking process. The boundaries of ACL insertions were identified using high-resolution magnetic resonance imaging (MRI). The AMB and PLB centroid-to-centroid distances were calculated from the tracked bone motions, and these bundle lengths were normalized to their respective lengths on MRI to calculate relative elongation. Maximum AMB relative elongation during running (6.7 ± 2.1%) was significantly greater than walking (5.0 ± 1.7%, p = 0.043), whereas the maximum PLB relative elongation during running (1.1 ± 2.1%) was significantly smaller than walking (3.4 ± 2.3%, p = 0.014). During running, the maximum AMB relative elongation was significantly greater than the maximum PLB relative elongation (p < 0.001). ACL relative elongations were correlated with tibiofemoral six degree-of-freedom kinematics. The AMB and PLB demonstrate similar elongation patterns but different amounts of relative elongation during walking and running. The complex relationship observed between ACL relative elongation and knee kinematics indicates that ACL relative elongation is impacted by tibiofemoral kinematic parameters in addition to flexion/extension. These findings suggest that ACL strain is region-specific during walking and running.

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Section: Methodssupporting

confidence: 53%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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The Complex Relationship Between In Vivo ACL Elongation and Knee Kinematics During Walking and Running

Nagai

Gale

Chiba

et al. 2019

Journal Orthopaedic Research

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“…The comparison between our results and those of other authors, by the various modes of evaluation, is found in ►Table 3. [3][4][5][6][7][8][9][10][11][12][13][18][19][20][21][22][23][24] In fact, Lord et al 25 published a study of the function of the ACL tibial insertion fibers in the resistance of anterior and rotational displacements, with robotics, in six degrees of freedom of movement. They concluded that the central, posterior and lateral fibers of the ACL tibial insertion play a secondary role in the restriction of tibial displacements and that the most important fibers are the anterior and the anteromedial peripheral portion.…”

Section: Discussionmentioning

confidence: 99%

“…4 Therefore, anticipating the dimensions of the ACL insertion can be valuable for better surgical planning. This can be done by CT scan 5,6 or magnetic resonance imaging (MRI), [7][8][9][10][11] but it can also be predicted by the individual physical characteristics. 3,4 In this decade, some authors sought to correlate the weight and height of patients with the size of their tibial ACL insertion.…”

Section: Introductionmentioning

confidence: 99%

Correlação entre características antropométricas individuais e as medidas da fóvea tibial do ligamento cruzado anterior

et al. 2019

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Resumo Objetivo Avaliar possíveis relações entre o peso e altura de pacientes submetidos à artroplastia total do joelho com o comprimento, largura e área da fóvea do ligamento cruzado anterior, verificados na cirurgia. Métodos Um total de 33 superfícies articulares tibias proximais, obtidas nos cortes tibiais de artroplastia total do joelho de 33 pacientes, foram utilizadas no presente estudo. O ligamento cruzado anterior foi dissecado cuidadosamente e ressecado com bisturi delicado, para expor sua fóvea. Depois, a periferia dessa fóvea foi demarcada por pequenos pontos, com um marcador. Cada peça foi fotografada e as medições do comprimento, largura e área da fóvea tibial do ligamento cruzado anterior foram feitas com o programa ImageJ (National Institutes of Health, Bethesda, MD, EUA). A análise estatística avaliou a correlação entre os dados antropométricos dos pacientes com as medidas da fóvea tibial do ligamento cruzado anterior. Resultados O comprimento, a largura e a área médios da fóvea tibial do ligamento cruzado anterior foram, respectivamente 11,7 ± 2,0 mm, 7,1 ± 1,4 mm e 151,3 ± 22,2 mm2. Houve relação estatisticamente significativa entre a altura dos pacientes e a largura da fóvea tibial do ligamento cruzado anterior. A largura da fóvea do ligamento cruzado anterior pôde ser predita pela fórmula: largura = 107,294–(133,179 × altura) + (44,009 × altura ao quadrado). Conclusão A altura dos pacientes pôde a prever a largura da fóvea tibial do ligamento cruzado anterior e, assim, pode ajudar os cirurgiões escolher o enxerto mais adequado para cada paciente, nas reconstruções do ligamento cruzado anterior.

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Does No Difference Really Mean No Difference?

Lucidi,

Drain,

McDonough

et al. 2024

Orthopaedic Sports Medicine

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Anterior cruciate ligament tibial insertion site is elliptical or triangular shaped in healthy young adults: high-resolution 3-T MRI analysis

Abstract: III.

Cited by 29 publications

References 41 publications

The Complex Relationship Between In Vivo ACL Elongation and Knee Kinematics During Walking and Running

The Complex Relationship Between In Vivo ACL Elongation and Knee Kinematics During Walking and Running

Correlação entre características antropométricas individuais e as medidas da fóvea tibial do ligamento cruzado anterior

Does No Difference Really Mean No Difference?

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