Review Article

A Review on Biomechanics of Anterior Cruciate Ligament and Materials for Reconstruction

Table 1

Human cadaveric studies on mechanical characterization of ACL and FATC.

Authors (year)Number of subjects and ageTensile force/strength, mean (SD) in NewtonStiffness, mean (SD) in Newton/mmRemarks/special considerations/comments

Kennedy et al. (1976)10 isolated ACL samples
Median age 62
626 (51)Strain rate study on isolated ACL samples was performed. Failure load and strain increased as a function of strain rate [25]

Trent et al. (1976)10 FATC samples
Age between 29 and 55 years
633141FATC samples [34]

Noyes and Grood (1976)6 FATC samples
Age between 16 and 26 years
1730 (660)182 (56)The presented tensile behavior of FATC is considered gold standards [35]
20 FATC samples
Age between 48 and 86 years
734 (266)129 (39)Strength and stiffness of ligaments decrease with increase in age [35]

Woo et. al (1991)54 FATC samples
3 age groups (22–35, 40–50, and 60–97) were studied
2160 (157) groups, 22–35 years
1503 (83) groups, 40–50 years
658 (129) groups, 60–97 years
242 (28) groups, 22–35 years
220 (24) groups, 40–50 years
180 (25) groups, 60–97 years
The effects of age and orientation direction (anatomical and tibial orientation) were studied. The younger population was observed to possess higher strength. Samples tested in anatomical direction had more tensile strength than those tested in tibial orientation [36]

Chandrashekar et al. (2006)17 FATC (8 male FATC, 9 females)
Mean age was 37 years
1818 (699) males, 1266 (527) females308 (89) males, 199 (88) femalesMale FATC samples were observed to fracture at higher loads than female FATC samples [37]