Load Transfer across the Pelvic Bone during Normal Walking
نویسندگان
چکیده
Pre-clinical evaluations of acetabular prosthesis designs call for an accurate numerical model of the natural pelvis. Stress analysis of the pelvis during physiological loading conditions is necessary to understand the load transfer mechanism, its relation with bone morphology and to analyze the deviations in stress distributions due to implantation of the acetabulum. Despite a few experimental and finite element (FE) studies [1-3], the load transfer in the pelvic bone remains scarcely investigated, quantitatively. The purpose of the study is to develop a realistic 3-D FE model of a hemi-pelvis and to understand the stress distributions across the pelvis during a normal walking cycle.
منابع مشابه
Load transfer across the pelvic bone.
Earlier experimental and finite element studies notwithstanding, the load transfer and stress distribution in the pelvic bone and the acetabulum in normal conditions are not well understood. This hampers the development of orthopaedic reconstruction methods. The present study deals with more precise finite element analyses of the pelvic bone, which are used to investigate its basic load transfe...
متن کاملPelvic Stability & Your Core
A primary function of the pelvis is to transfer the loads generated by body weight and gravity during standing, walking, sitting and other functional tasks. How well this load is managed dictates how efficient function will be. The word ‘stability’ is often used to describe effective load transfer and requires optimal function of three systems: the passive (form closure), active (force closure)...
متن کاملThe relationship between hip-abductor strength and the magnitude of pelvic drop in patients with low back pain.
CONTEXT It has been theorized that a positive Trendelenburg test (TT) indicates weakness of the stance hip-abductor (HABD) musculature, results in contralateral pelvic drop, and represents impaired load transfer, which may contribute to low back pain. Few studies have tested whether weakness of the HABDs is directly related to the magnitude of pelvic drop (MPD). OBJECTIVE To examine the relat...
متن کاملJoint load considerations in total knee replacement.
Estimates of knee joint loadings were calculated for 12 normal subjects from kinematic and kinetic measures obtained during both level and downhill walking. The maximum tibiofemoral compressive force reached an average load of 3.9 times body-weight (BW) for level walking and 8 times BW for downhill walking, in each instance during the early stance phase. Muscle forces contributed 80% of the max...
متن کاملEvaluation of the ability of physical therapists to palpate intrapelvic motion with the Stork test on the support side.
BACKGROUND AND PURPOSE Clinical indicators of pelvic girdle dysfunction are limited. However, research has shown that the pattern of intrapelvic motion is altered during single-leg support in subjects with pelvic girdle pain (PGP). Functionally, no relative motion should occur within the pelvis during load transfer, whereas anterior rotation of the innominate bone relative to the sacrum occurs ...
متن کامل