Chapter 1. Muscle Spindles and Beta Motor Units in Trigger Point and Taut Band Formation (pp.1-50)
(Juhani V. Partanen, Department of Clinical Neurophysiology, Helsinki University Hospital, Helsinki, Finland)
Chapter 2. Deep Dry Needling versus Intratissue Percutaneous Electrolysis for the Treatment of Painful Trigger Points of Masticatory Muscles (pp.51-68)
(Luis Miguel Gonzalez-Perez, Ricardo Lopez-Martos and Pedro Infante-Cossio, Department of Maxillofacial Surgery, Virgen del Rocio University Hospital, Seville, Spain)
Chapter 3. The Perception and Intensity of Pain of Brazilian Office Workers: A Profile of Musculoskeletal Symptoms (pp.69-86)
(Cynara Cristina Domingues Alves Pereira and Valquíria Aparecida de Lima, Adapted Physical Activity, University of Campinas (UNICAMP), University Campus “Zeferino Vaz”, Physical Education Institute, Department for Adapted Physical Activity Studies, Campinas, São Paulo, Brazil, and others)
Pain is considered one of the most relevant symptoms of musculoskeletal disorders (MSD). Myofascial pain with taut bands and trigger points (TrPs) of muscles involved is common in the medical practice. Myofascial pain arises by overuse, strain and exhaustion of muscle and after precision work. Chapter One conjectures that these factors cause sustained activity of intrafusal gamma motor units, adjusting the sensitivity of muscle spindles. Chapter Two evaluates the usefulness of deep dry needling and intratissue percutaneous electrolysis in the treatment of temporomandibular myofascial pain. Chapter Three describes the perception of pain and quantifies its intensity among office workers.