Common symptoms of osteoporosis: 1. Pain: The most common symptom of primary osteoporosis is low back pain, which accounts for 70%-80% of the patients with pain. The pain spreads along the spine to both sides, decreases when lying on the back or sitting, increases when standing upright or when standing or sitting for a long time, is light during the day, increases at night and when waking up in the morning, and increases when bending, muscle movement, coughing and stooling. 2, length shortening, hunchback: the front part of the vertebral body is almost mostly composed of cancellous bone, and this part is the pillar of the body, heavy weight, easy to compress and deform, so that the spine tilts forward, dorsal curvature increases, forming a hunchback, with age, resulting in significant knee joint contracture. 3, fracture: This is a common and serious complication of degenerative osteoporosis. 4, respiratory function decline: compression fracture of thoracic and lumbar vertebrae, backward curvature of the spine, thoracic deformity, can make the lung capacity and maximum ventilation significantly reduced, patients can often appear chest tightness, shortness of breath, dyspnea and other symptoms.