Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지

Mechanical Properties of Different Anatomical Sites of the Bone-Tendon Origin of Lateral Epicondyle

  • Han, Jung-Soo (Department of Mechanical and Systems Engineering, CSST, Hansng University)
  • Published : 2001.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

A series of rabbit common extensor tendon specimens of the humeral epicondyle were subjected to tensile tests under two displacement rates (100mm/min and 10mm/min) and different elbow flexion positions 45°, 90°and 135°. Biomechanical properties of ultimate tensile strength, failure strain, energy absorption and stiffness of the bone-tendon specimen were determined. Statistically significant differences were found in ultimate tensile strength, failure strain, energy absorption and stiffness of bone-tendon specimens as a consequence of different elbow flexion angles and displacement rates. The results indicated that the bone-tendon specimens at the 45°elbow flexion had the lowest ultimate tensile strength; this flexion angle also had the highest failure strain and the lowest stiffness compared to other elbow flexion positions. In comparing the data from two displacement rates, bone-tendon specimens had lower ultimate tensile strength at all flexion angles when tested at the 10mm/min displacement rate. These results indicate that creep damage occurred during the slow displacement rate. The major failure mode of bone-tendon specimens during tensile testing changed from 100% of midsubstance failure at the 90°and 135°elbow flexion to 40% of bone-tendon origin failure at 45°. We conclude that failure mechanics of the bone-tendon unit of the lateral epicondyle are substantially affected by loading direction and displacement rate.

Keywords

References

  1. Armstrong, T. and Chaffin, D., 1979a, 'Some Biomechanical Aspects of the Carpal Tunnel,' J. Biomech. Vol. 12, pp. 567-570 https://doi.org/10.1016/0021-9290(79)90045-9
  2. Butler, D. L., Grood, E. S. and Noyes, F. R., 1984, 'Effects of Structure and Strain Measurement Technique on the Material Properties of Young Human Tendons and Fascia,' J. Biomech. Vol. 17, pp. 579-596 https://doi.org/10.1016/0021-9290(84)90090-3
  3. Castelli, W. A., Evans, F. G., Diaz-Perez, R. and Armstrong, T. J., 1980, 'Intraneural Con-netive Tissue Proliferation of the Median Nerve in Carpal Tunnel Syndrome,' Archs. Phys. Med. Rehabii. Vol. 61, pp. 418-422
  4. Currey, J. D., 1984, 'The Mechanical Adaptation of Bones,' Princeton University Press, pp. 190-192
  5. Han, J. S., Lee, K. H., Ryu, J. and Kish, V., 1995, 'Failure Strength and Pattern of Bone -Tendon Specimens of the Common Extensor and Flexor Tendons of the Humeral Epicondyle After Cyclic and Tensile Loading Test,' Submitted to J. Orthop. Res
  6. Hooley, C. J. and McCrum, N. G., 1980, 'The Viscoelastic Deformation of Tendon,' J. Biomech. Vol. 13, pp. 521-528 https://doi.org/10.1016/0021-9290(80)90345-0
  7. Jobe, F. W. and Ciccotti, M. G., 1994, 'Lateral and Medial Epicondylitis of the Elbow,' J. Am. Acad. Ortho. Surg., Vol. 2, pp. 1-8
  8. Nirschl, R. P., 1973, 'Tennis Elbow,' Ortho. Clin. North. Am., Vol. 4, pp. 787-800
  9. Noyes, F. R., Butler, D. L. and Grood, E. S., 1984, 'Biomechanical Analysis of Human Ligament Grafts Used in Knee-Ligament Repairs and Reconstructions,' J. Bone. Joint. Surg., Vol. 66A, pp. 344-352
  10. Wainwright, S. A., 1976, Mechanical Design in Organisms, Wiley, New York, N. Y.
  11. Wang, X. T. and Ker, R. F., 1995, 'Creep Rupture of Wallaby Tail Tendons,' J. Exp. Biol. Vol. 198, pp. 831-845
  12. Wang, X. T., Han, J. S., Ryu, J. and Vince, K., 1995, 'The Effects of Elbow Joint Angle on the Mechanical Properties of the Bone-Tendon Specimen of the Common Extensor Tendon of the Humeral Epicondyle,' In prepare
  13. Woo, S. L-Y., Hollis, J. M, Adams, D. J., Lyon, R. M. and Takai, S., 1998, 'Ligament, Tendon and Joint Capsule Insertions to Bone, In 'Injury and repair of the Musculoskeletal Soft Tissue,' Ed. Woo, S. L-Y. and Buckwaltr, J. A., Park ridge, Illinois, American Academy of Orthopedic Surgeon, pp. 133-166