When you hear the bones ringing when you press the leg, it may be due to the following reasons: 1. It is due to the ringing sound produced by the tendons. When pressing the leg, the muscles and tendons will be more strongly stretched. If there is adhesion around the tendon, or the tendon is not stretched, it will cause tendon ringing, and then the patient will mistake the bone ringing. 2, may come from the surrounding joints, there may be abnormal activities inside the joint during leg press, such as pressure changes inside the joint, or there is cartilage, meniscus wear. At this time, it may be due to joint rattling, and lead to bone ringing. 3, may be due to lower limb muscle, tendon, ligament strains, leg press process, if too eager, it will lead to the above parts of the strain, and then in the strain at the same time produce ringing. 4, may be due to lower limb fracture caused by, if stretching too vigorous, may cause avulsion fracture of the lower limb. If the patient has osteoporosis, it will also lead to pathological fracture, which in turn will lead to this ringing sound.