Luc Alberts

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This study sought to compare differences in neocartilage produced over time from two types of resorbable scaffold materials. One material was entirely synthetic and contained a polyglycolic acid-poly-L-lactic acid matrix (PGA-PLLA). The second scaffold material was bioactive and consisted of a four-layered construct of porcine small intestinal submucosa(More)
OBJECTIVES To determine whether a novel immobilization collar called the Nebraska collar would restrict motion of the cervical spine better than three traditional designs: the Philadelphia collar, the sterno occipital mandibular immobilizer (S.O.M.I.), and the Lehrman-Minerva cervical orthosis. DESIGN Cervical spine radiographs and a compass were used to(More)
PURPOSE This study was conducted to examine a biomechanical model and to help answer fundamental questions that relate to rigid plate fixation in the maxilla. Specifically, we sought to elucidate the principal strain patterns generated in the maxilla secondary to masticatory forces as well as the amount of permanent deformational changes incurred due to(More)
In this paper we present results of structural studies of compacting experimental systems of ductile grains in two and three dimensions. The high precision of our two-dimensional experiments enables a detailed study of the evolution of coordination numbers and local crystalline arrangements as a function of the packing fraction. The structure in both(More)
The first anisotropy constant for Fel-%Si, is determined by torque measurements, for x up to 10 atomic per cent, in the temperature range 21-300 OK. The values, as extrapolated to 0 OK, vary linearly with silicon content. Using the expressions obtained by Keffer and Oguchi it is shown that K1 at 0 OK should vary as { 1 (a + 2) x ) where a is the ratio of(More)
A large-deformation, finite-element analysis was conducted to model stress fields around the developing growth plate as a first approach to comprehend the clinical application of traction for limb lengthening procedures. The model chosen was a cross section through the distal femoral growth plate of a 14-week-old dog. The chosen section passed through two(More)
PURPOSE Running over obstacles of sufficient height requires heel strike (HS) runners to make a transition in landing strategy to a forefoot (FF) strike, resulting in similar ground reaction force patterns to those observed while landing from a jump. Identification of the biomechanical variables that distinguish between the landing strategies may offer some(More)
  • L R Alberts
  • Journal of biomedical materials research
  • 1987
A substance that activates the resting periosteum (PAA) was applied to the periosteal surface in two different healing models using the femurs of 2-kg male rabbits. The activation agent was applied to the periosteal surface over the sites of circular defects drilled through the lateral cortex in one model and over the sites of porous polyethylene implants(More)
OBJECT Cerebrospinal fluid (CSF) shunt system malfunction due to silastic tubing fracture necessitates revision surgery in shunt-dependent individuals. The goal of this study was to examine the mechanical stretching and breaking characteristics of new and used CSF shunt tubing catheters to determine if any inherent physical properties predispose the tubing(More)
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