Proceedings of a NATO ARW held in Brussels, Belgium, September 25-26, 1992

The Classic: De Marneffe's work (In French).- The Classic: De Marneffe's work (In French).- Current presentation of his work by De Marneffe.- Current presentation of his work by De Marneffe.- Anatomy and Physiology.- Morphology and Distribution of Blood Vessels and Blood Flow in Bone.- Microvascularization, Osteogenesis, and Myelopoiesis in Normal and Pathological Conditions.- Endothelial Cells and Bone Cells.- History of Discoveries of Bone Marrow and Bone Vascularisation and Innervation.- The Direct Effects of Acidosis and Alkalosis on Long Bone Vascular Resistance.- The Regulation of Blood Flow in Bone.- Methods of Investigation.- Measurement of Bone Blood Flow in Animals.- Arteriolar Blockade Revisited: Comparisons Between the Use of Resin Particles and Microspheres for Bone Haemodynamic Studies.- Measurement of Bone Blood Flow in Humans.- Skeletal Fluoride Kinetics of 18F- and Positron Emission Tomography (PET): in-vivo Estimation of Regional Bone Blood Flow and Influx Rate in Humans.- Intraosseous Pressure, Gas Tension and Bone Blood Flow; in Normal and Pathological Situations: A Survey of Methods and Results.- Fracture Healing and Bone Grafts.- The Role of the Vasculature in Fracture Healing.- Haemodynamics of Bone Healing in a Model Stable Fracture.- Perturbations of Vascularization and Circulation Due to Osteosynthetic Methods.- Comparative Vascular Evaluation by MRI of Autologous and Bovine Grafts.- The Importance of Flow Conductance of Cancellous Bone Grafts as a Critical Factor in Graft Incorporation.- Circulatory Aspects of Bone Disorders.- Myelogenous Osteopathies.- Circulatory Aspects of Bone Disease in Endocrinopathies.- Bone Turnover in Osteoporosis.- Bone Blood Flow and Spaceflight Osteopenia.- Bone Vascularization in Arthritis.- Vascular Aspectsin Degenerative Joint Disorders.- Circulatory Aspects of Reflex Sympathetic Dystrophy.- Osteonecrosis.- Atraumatic Necrosis of the Femoral Head: General Report.- Epidemiology and Risk Factors in Avascular Osteonecrosis of the Femoral Head.- Pathophysiology of Osteonecrosis.- Diagnosis of Osteonecrosis of the Femoral Head.- Bone Biopsy as Diagnostic Criteria for Aseptic Necrosis of the Femoral Head.- The Histology of Osteonecrosis and Its Distinction from Histologic Artifacts.- Bone Arteriography of the Femoral Head of Humans in Normal and Pathological Conditions.- Compared Microangiographic Images of Osteonecrosis of the Femoral Head and Osteoarthritis of the Hip.- Value of Quantified MRI to Predict Long-Term Prognosis of Early Stage Avascular Necrosis of the Femoral Head.- Conservative, Non Invasive Treatment of Osteonecrosis of the Femoral Head.- Long Term Results in Electromagnetic Fields (EMF) Treatment of Osteonecrosis.- Effects of Electric and Electromagnetic Fields on Bone Formation, Bone Circulation and Avascular Necrosis.- The Place of Core Decompression in the Treatment of Osteonecrosis of the Femoral Head.- 300 Cases of Core Decompression with Bone Grafting for Avascular Necrosis of the Femoral Head.- Proximal Femoral Osteotomies in the Treatment of Idiopathic and Steroid-Induced Osteonecrosis of the Femoral Head.- Methodologic Problems in Staging and Evaluating Osteonecrosis.- The ARCO Perspective for Reaching One Uniform Staging System of Osteonecrosis.

The Association Internationale de Recherche sur la Circulation Osseuse, A.R.C.O., was founded in London in December 1989 by a small group of doctors, surgeons and researchers in basic sciences who had been involved for many years in the study of bone circulation and its disorders. They had met several times in Toulouse, during the International Symposia on Bone Circulation held there since 1973 and they wished to carry their contacts further. In founding A.R.C.O., they established as their primary aims the encouragement and furtherance of research, organisation of meetings and promotion of knowledge on the subject. At the present time, the Association has over a hundred members from more than bone tissue twenty countries in Europe, America and Asia. All have the conviction that and its pathology can only be truly known and studied if one has an understanding of its vascular system and the way its circulation functions. This concept, apparently beyond question, has not yet been adopted by all physicians and scientists who are interested in bone. From time to time, one comes across teaching programmes on bone patho logy which make no mention of bone circulation.