Avtor/Urednik		Stankovski, Vlado; Iglič, Aleš; Kralj-Iglič, Veronika; Kersnič, Boštjan; Smrke, Dragica
Naslov		Determination of the stress distribution in the hip-joint articular surface
Tip		članek
Vir		In: Zajc B, editor. Zbornik 6. elektrotehniške in računalniške konference ERK'97. Zvezek B. Računalništvo in informatika, umetna inteligenca, robotika, razpoznavanje vzorcev - 3. letna konferenca SDRV, biomedicinska tehnika, močnostna elektrotehnika, didaktika, študentski članki; 1997 sep 25-27; Portorož. Ljubljana: Slovenska sekcija IEEE,
Leto izdaje		1997
Obseg		str. 107-10
Jezik		eng
Abstrakt		The programming language JavaTM (Sun Microsystems, Inc.) is used to produce a set of objects that comprise the hip-joint geometry (points, axes, profiles, distances, angles), objects that describe the forces and the stress distribution in the hip-joint articular surface (forces, stress), as well as objects that can be manipulated by using Drag and Drop operations in order to simulate changes in the hipjoint geometry (femoral head, femoral nexk, greater trochanter and lower part of the femur). Any change in the objects that be manipulate influences the remaining objects that are currently displayed. Particularly, any change can influence the hip-joint reaction force, and the correspoinding conlact stress distribution. The changes are estimated automatically by using methods that are attached to the specific objects. Digitized profiles of standard AP radiographs of the hip-joint are used as input to this computer-adied system. A non-homogeneous scaling method that is based on a reference model of the hip musculature, is used to prepare data for each human subject. These data serve as input to a hree-dimensional mathematical model of the hip-joint in one-legged stance, which is used to estimate the values of the hip-joint reactin force (R) and its inclination angle (OR). Afterwards, the stress distribution in the hip-joint articular surface ising a three-dimensional model, which takes into account the previously determined values of R and OR, the femoral head radius (r) and the center-edge angle of Wiberg (0CE). THe system proved to be useful for conducting research and may also be useful for educational putposes.
Deskriptorji		HIP JOINT BIOMECHANICS COMPUTER SIMULATION MODELS, THEORETICAL