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Tensile properties of the human femur-anterior cruciate ligament-tibia complex: The effects of specimen age and orientation

Woo, Savio L.-Y., Hollis, J. Marcus, Adams, Douglas J., Lyon, Roger M., Takai, Shinro·1991·The American Journal of Sports Medicine

Abstract

The structural properties of 27 pairs of human cadaver knees were evaluated. Specimens were equally divided into three groups of nine pairs each based on age: younger (22 to 35 years), middle (40 to 50 years), and older (60 to 97 years). Anterior-posterior displacement tests with the intact knee at 30° and 90° of flexion revealed a significant effect of knee flexion angle, but not of specimen age. Tensile tests of the femur-ACL- tibia complex were performed at 30° of knee flexion with the ACL aligned vertically along the direction of applied tensile load. One knee from each pair was oriented anatomically (anatomical orientation), and the contralateral knee was oriented with the tibia aligned vertically (tibial orientation). Structural properties of the femur-ACL-tibia complex, as represented by the linear stiffness, ultimate load, and energy absorbed, were found to decrease significantly with specimen age and were also found to have higher values in specimens tested in the anatomical orientation. In the younger specimens, linear stiffness (242 ± 28 N/mm) and ulti mate load (2160 ± 157 N) values found when the femur- ACL-tibia complex was tested in the anatomical orien tation were higher than those reported previously in the literature. These values provide new baseline data for the design and selection of grafts for ACL replacement in an attempt to reproduce normal knee kinematics.

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Authors
Woo, S. L.-Y., Hollis, J. M., Adams, D. J., Lyon, R. M., & Takai, S.
Venue
The American Journal of Sports Medicine
Published
1991-05
Volume
19
Issue
3
Pages
217-225
ISSN
  • 0363-5465 (ISSN-L)
  • 1552-3365
OpenAlex
W2037528844
Cited by
1,196
References
0
FWCI
17.00
Type
journal article
Language
en
Open access
closed

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