Author/Editor		Mavčič, B; Pompe, B; Antolič, V; Daniel, M; Iglič, A; Kralj-Iglič, V
Title		Mathematical estimation of stress distribution in normal and dysplastic human hips
Type		članek
Source		J Orthop Res
Vol. and No.		Letnik 20
Publication year		2002
Volume		str. 1025-1030
Language		eng
Abstract		By using a mathematical model of the adult human hip in the static one-legged stance position of the body, the forces acting on the hip, peak stress in the hip joint and other relevant radiographic and biomechanical parameters were assessed. The aims were to examine if the peak stress in dysplastic hips is higher than in normal hips and to find out which biomechanical parameters contribute significantly to higher peak stress. The average normalized peak stress in dysplastic hips (7:1 kPa/N) was markedly higher 0100%) than the average normalized peak stress in normal hips (3.5 kPa/N). The characteristic parameters that contributed to higher peak stress in dysplastic hips included the smaller lateral coverage of the femoral head, the larger interhip distance, the wider pelvis, and the medial position of the greater trochanter. These results are consistent with the hypothesis that stress distribution over weightbearing surface of the hip joint is the relevant parameter for assessment of the risk for developing coxarthrosis.
Descriptors		OSTEOARTHRITIS, HIP HIP JOINT STRESS, MECHANICAL WEIGHT-BEARING BONE DISEASES, DEVELOPMENTAL MODELS, THEORETICAL