BACKGROUND Patients with upper limb pain often have a slumped sitting position and poor shoulder posture. Pain could be due to poor posture causing mechanical changes (stretch; local pressure) that in turn affect the function of major limb nerves (e.g. median nerve). This study examines (1) whether the individual components of slumped sitting (forward head… (More)
Three cases of combined collapse of the right upper and middle lobes are presented. The appearance is the mirror image of collapse of the left upper lobe. The radiographic appearance is described, and possible causes and mechanisms of collapse are discussed.