Joint contact behavior in the native, ligamentum teres deficient and surgically reconstructed hip: A biomechanics study

Abstract

Background: The ligamentum teres is known to contribute to hip joint stability; however, the effect of surgical reconstruction of ligamentum teres tears on hip joint function is poorly understood. This study aimed to employ a cadaver model to quantify peak pressure, average pressure, contact force, and contact area between the femoral head and acetabulum in native, ligamentum teres deficient and reconstructed hips. Methods: Nine fresh-frozen human cadaveric hips were dissected and mounted to a multi-axis Materials Test System. Digital pressure sensors were placed on anterior, posterior, and superior regions of the acetabulum. Joint loading was simulated in 20deg flexion, neutral position, an..