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Determination of the mechanical properties of the hip joint capsule

Apatsidis, P.D. and Nicol, A.C. and Morlock, M.M. (2002) Determination of the mechanical properties of the hip joint capsule. International Conference Engineers & Surgeons - Joined at the Hip : Refining Future Strategies in Total Hip Replacement . Institution of Mechanical Engineers.

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Abstract

Hip joint capsular ligaments have not been studied sufficiently in the past and very little is known about their mechanical properties. One of the most recent studies presents data on the two ileofemoral ligaments (medial and lateral) and the ischiofemoral ligament. This data is based on tensile tests that were performed at low strain rates (0.04mm/s) In this present study the aim was to generate knowledge on the mechanical properties of the capsular ligaments in the intact human cadaveric hip joint. This way the risk of damaging the ligaments when exercising them is eliminated and chossing the right borders of each ligament becomes redundant. Another advantage of testing the hip joint ligaments in an intact joint is that by reproducing the kinematics of the joint the restraining effect of the ligaments on the joint can be simulated realistically. In this way it is possible to determine the stabilising effect of all hip ligaments together as they surround the hip joint like a sleeve and also the individual contribution of each of the ligaments.