Forced position patients cannot rely on their own strength to adjust or change the position of the limbs, thus being in a fixed and uncomfortable state that is passive position, an experienced physician can examine the passive position according to the performance of different positions of the patient that is postural examination. Clinically, for patients in a forced position, we have to perform: 1. Physical examination Taking a medical history gives us an initial impression and insight, and also guides us to have a concept of the nature of the disease. 2.Laboratory examination Laboratory examination must be based on the objective material learned from the history and physical examination for generalization and analysis, from which several diagnostic possibilities are proposed, and then further consideration is given to those laboratory examinations to confirm the diagnosis.