Musculoskeletal Disorders (MSD) are one of the leading classes of health effects and can be caused by various factors, work related and non-work related. MSD refers to health related problems of the locomotor apparatus, i.e. health problems of the skeleton, ligament, muscles, tendons, joints, nerves and cartilage. Rates of musculoskeletal disorders vary by population, their age groups, genders, socioeconomic aspects and other factors. These factors can affect our understanding of the prevalence, incidence, and costs of musculoskeletal disorders aside from the variability of actual prevalence or incidence rates due to etiologic issues or costs due to illness or injury severity or treatment response and recovery. This book provides an analysis of costs of musculoskeletal disorders of employed individuals. It also discusses the application of differential scanning calorimetry for the diagnosis of musculoskeletal disorders, and the effects of stretching and sensory motor training for older adults with musculoskeletal disorders.