Health Care systems based on compulsory social insurance alone tend to regulate access to care through control and rationing of human and material resources. As a consequence, motivation for developping and improving therapeutic concepts and procedures is often low. Economic growth and major disposability of financial resources for individual citizens enlarge the field of choice for treatment. Insurance companies and the medical profession are tempted to offer a broad spectrum of treatment options that tends to increase demand and might undermine the quality of indication, thereby causing an increase in complications and in cost for secondary repair which results in spoiling of resources. Measuring and managing quality under these conditions becomes a major concern, especially in mixed economies with both social and private health insurances schemes.