Mechanical Properties of Spinal Ligaments for Rhesus Monkey, Baboon and Chimpanzee.

Little, Robert W.; Hubbard, Robert P.; Hyler, David L; Slonim, Arnold R.

doi:10.21236/ada104932

Cited by 2 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Stress values for 7 percent strain given in Fig. 4 are consistent with other studies of tendon response [12,16,21,22] and they are also consistent with maximum stress values for human cruciate ligaments [17] and primate spinal ligaments [23].…”

Section: Resultssupporting

confidence: 89%

“…The maximum tangent modulus at 7 percent strain of about 600 MPa (shown in Figure 3) is consistent with results from rat tail tendon by Torp, et al [21], primate tendons by Selke, et al [22], and the sparse data for human digital flexor tendon reported by Rigby, et al [12]. The moduli for anterior cruciate ligaments from humans of about 100 MPa reported by Noyes and Grood [17] and for collagenous, spinal ligaments from primates (supraspinous ligaments and posterior longitudinal ligaments) of about the same moduli [23] are less than for tendons probably due to the less dense and nonparallel collagenous fiber structure and the compliance of the bone in the bone-ligament-bone samples. Stress values for 7 percent strain given in Fig.…”

Section: Resultssupporting

confidence: 88%

See 1 more Smart Citation

Mechanical Properties of Human Tendon and Their Age Dependence

Hubbard

Soutas-Little

1984

Journal of Biomechanical Engineering

View full text Add to dashboard Cite

There are no previously published data on changes in the mechanical behaviors of human tendon from maturation in the second decade to senectitude in the seventh decade or thereafter. In this study, 44 tendons from individuals ranging in age from 16 to 88 yr were subjected to an extensive series of mechanical tests which included preconditioning, extensions at strain rates of 100 percent/s, 1 percent/s, and 0.01 percent/s, and stress relaxation with cyclic and constant extensions. Pairs of extensions at 1 percent/s were run throughout the protocol to evaluate the repeatability of tissue response. It was found that these responses changed little for any single sample within a pair of such tests; however, throughout the protocol, the peak stresses and moduli decreased. Extensions at different rates revealed a definite rate dependency of tendon responses with sample modulus being directly related to extension rate and slightly less hysteresis at 1 percent/s than at 100 percent/s or 0.01 percent/s. The load relaxation in samples subjected to either cyclic or constant extensions was generally best described by a linear function of the logarithm of time. The rate of relaxation with constant extension varied little with extension magnitude. The rate of relaxation in the cyclic tests was greater at 10 Hz than at 0.1 Hz. The results indicate that subject age has no effect on tendon modulus and a very small effect on hysteresis and relaxation. Extensive information on subject history was not available in this study for correlation with mechanical responses so that an age effect may have been masked by other variables, possibly health, diet, disease, or exercise.

show abstract