Improved techniques for measuringin vitro the geometry and pressure distribution in the human acetabulum, II:​ instrumented endoprosthesis measurement of articular surface pressure distribution

Rushfeldt, P. D.; Mann, R. W.; Harris, W. H.

Affiliations

¹Massachusetts Institute of Technology, Department of Mechanical Engineering, 77 Massachusetts Avenue, Room 3-144, Cambridge, MA 02139, U.S.A.

²Department of Orthopaedic Surgery, Boston, MA 02114, U.S.A.

Abstract

A technique to measurein vitro the distribution of pressure on the cartilage surface of the human acetabulum using a modified endoprosthesis with fourteen integral pressure transducers is described. Under a constant load vector pressure contour maps are generated for times from shortly after loading until 20 min into cartilage consolidation. The peak pressure decreases with time as the area of contact increases. The pressure distribution is neither uniform nor even axisymmetric about the load vector. We believe that the highly irregular pressure profiles observed are due primarily to cartilage thickness distribution and irregularities at the calcified cartilage interface as described in Part I.

Links

DOI: 10.1016/0021-9290(81)90041-5

PubMed: 7263723

WoS: A1981LX47600004

History

Received: 1978-09-25

Revised: 1980-03-11

Cited Works (3)

Year	Entry
1979	Armstrong CG, Bahrani AS, Gardner DL. In vitro measurement of articular cartilage deformations in the intact human hip joint under load. J Bone Joint Surg. July 1979;61A(5):744-755.
1971	Greenwald AS, O'Connor JJ. The transmission of load through the human hip joint. J Biomech. December 1971;4(6):507-528.
1978	Rushfeldt PD. Human Hip Joint Geometry and the Resulting Pressure Distribution Cambridge, MA: Massachusetts Institute of Technology; 1978.

Cited By (24)

Year	Entry
1985	Lippiello L, Kaye C, Neumata T, Mankin HJ. In vitro metabolic response of articular cartilage segments to low levels of hydrostatic pressure. Connect Tissue Res. 1985;13(2):99-107.
1983	Brown TD, Shaw DT. In vitro contact stress distributions in the natural human hip. J Biomech. 1983;16(6):373-384.
1984	Brown TD, DiGioia AM III. A contact-coupled finite element analysis of the natural adult hip. J Biomech. 1984;17(6):437-448.
1989	El-Bohy AA, Yang K-H, King AI. Experimental verification of facet load transmission by direct measurement of facet lamina contact pressure. J Biomech. 1989;22(8-9):931-941.
1990	Fyhrie DP, Carter DR. Femoral head apparent density distribution predicted from bone stresses. J Biomech. 1990;23(1):1-10.
1983	Ahmed AM, Burke DL. In-vitro of measurement of static pressure distribution in synovial joints, I: tibial surface of the knee. J Biomech Eng. August 1983;105(3):216-225.
1994	Macirowski T, Tepic S, Mann RW. Cartilage stresses in the human hip joint. J Biomech Eng. February 1994;116(1):10-18.
2008	Anderson AE, Ellis BJ, Maas SA, Peters CL, Weiss JA. Validation of finite element predictions of cartilage contact pressure in the human hip joint. J Biomech Eng. October 2008;130(5):051008.
1989	Hodge WA, Carlson KL, Fijan RS, Burgess RG, Riley PO, Harris WH, Mann RW. Contact pressures from an instrumented hip endoprosthesis. J Bone Joint Surg. October 1989;71A(9):1378-1386.
1984	Brown TD, Shaw DT. In vitro contact stress distribution on the femoral condyles. J Orthop Res. 1984;2(2):190-199.
1991	Hall AC, Urban JPG, Gehl KA. The effects of hydrostatic pressure on matrix synthesis in articular cartilage. J Orthop Res. January 1991;9(1):1-10.
1986	Hodge WA, Fijan RS, Carlson KL, Burgess RG, Harris WH, Mann RW. Contact pressures in the human hip joint measured in vivo. Proc Natl Acad Sci USA. May 1986;83(9):2879-2883.
1999	Zdero R. A New Diagnostic Ultrasound Technique for Studying TKR Contact Mechanics [PhD thesis]. Queen's University; May 1999.
2000	Ferguson SJ. Biomechanics of the Acetabular Labrum [PhD thesis]. Queen's University; March 2000.
1985	Kwan MK-W. A Finite Deformation Theory for Nonlinearly Permeable Cartilage and Other Soft Hydrated Connective Tissues and Rheological Study of Cartilage Proteoglycans [PhD thesis]. Troy, NY: Rensselaer Polytechnic Institute; December 1985.
1986	Fyhrie DP. Stress Analysis and Design of Proximal Femoral Prostheses [PhD thesis]. Stanford University; January 1986.
1997	Stevens SS. Mechanical Regulation of Articular Cartilage Development, Maintenance and Degeneration [PhD thesis]. Stanford University; August 1997.
2008	Greaves LL. Effect of Acetabular Labral Tears, Repair and Resection on Hip Cartilage Strains: A 7T MR Study [Master's thesis]. Vancouver, BC: University of British Columbia; August 2008.
1991	Hale JE. Some Aspects of the Biomechanics of Local Articular Incongruities [PhD thesis]. University of Iowa; December 1991.
1986	Bylski DI. In Situ Measurement of Meniscal Mechanics in Human Knee Joints [PhD thesis]. University of Michigan; 1986.
2007	Anderson AE. Computational Modeling of Hip Joint Mechanics [PhD thesis]. University of Utah; April 2007.
2013	Harris MD. The Geometry and Biomechanics of Normal and Pathomorphologic Human Hips [PhD thesis]. University of Utah; August 2013.
2013	Henak CR. Cartilage and Labrum Mechanics in the Normal and Pathomorphologic Human Hip [PhD thesis]. University of Utah; August 2013.
2014	Abraham CL. Biomechanical Analysis of Acetabular Dysplasia: Foundations for Improved Clinical Care [PhD thesis]. University of Utah; December 2014.