First, X-ray examination 1, the size and shape of the heart shadow provide important reference information for the diagnosis of the cause of contracture, and indirectly reflect the functional status of the heart according to the degree of enlargement and dynamic changes. 2.The presence or absence of pulmonary stasis and its degree directly reflect the state of cardiac function. In the early stage of increased pulmonary venous pressure, it is mainly manifested by the enhanced vascular shadow of the pulmonary hilum, and the increased vascular shadow of the upper lung is similar to or even more dense than the texture of the lower lung. Due to the increased pulmonary artery pressure seen in the lower pulmonary artery widening, further interstitial pulmonary edema can blur the lung field. KerleyB line is a horizontal linear shadow clearly visible on the lateral side of the lung field, which is a manifestation of fluid accumulation in the interlobular septa of the lung and is a characteristic manifestation of chronic pulmonary stasis. In acute alveolar pulmonary edema, the hilum is butterfly-shaped, and a large fused shadow is visible in the lung field. Second, echocardiography 1, more accurate than X to provide changes in the size of each heart chamber and the structure and function of the heart valves. 2.Heart function ①Systolic function: The difference between end-systolic and end-diastolic volumes is used to calculate the ejection fraction (EF), which is not precise enough, but convenient and practical. The normal EF value is >50% and increases by at least 5% during exercise. ② diastolic function: ultrasound Doppler is the most practical clinical method to determine diastolic function. The maximum ventricular filling velocity in early diastole in the cardiac cycle is the E peak, and the maximum ventricular filling in late diastole (atrial contraction) is the A peak, and E/A is the ratio of the two. Normal people E / A value should not be less than 1.2, young and middle-aged people should be greater. In diastolic insufficiency, the E peak decreases and the A peak increases, and the E/A ratio decreases. If the heart sound map is recorded at the same time can determine the ventricular isovolumic diastolic time (C, D value), which reflects the diastolic function of the ventricle in the Middle East. Third, radionuclide examination Radionuclide cardiac blood pool development, in addition to help determine the size of the ventricular cavity, to calculate the EF value by the difference between end-systolic and end-diastolic ventricular images, but also by recording the radioactivity – time curve to calculate the sexual maximum filling rate to reflect the diastolic function of the heart. Contracture is a prolonged spasticity of a muscle or joint or a specific position, resulting in muscle atrophy and joint deformation and fixation, which in turn causes functional impairment and local pain. Due to the etiology, contractures are more common in the elderly and often occur in the limbs and nearby joints, which is an important reason that affects disease recovery and reduces the quality of life of the elderly. Early manifestations of ischemic contracture: weakening or elimination of the radial artery pulsation, flexion of the fingers and wrist, inability to extend the fingers (thumb) and wrist automatically, restriction of passive movement and pain. Numbness, coldness or swelling of the hand and forearm. If not treated immediately, muscle necrosis will occur and scar contracture will be formed.