In most cases, bone loss can be restored to normal, but in special cases, it is difficult to restore normal, the details are as follows: a. For most patients, bone loss is only a temporary phenomenon, after active rehabilitation and calcium supplementation, it can promote bone recovery, most of the patients’ muscle activities are not seriously affected, so the recovery is relatively fast. Second, special cases, such as patients who are bedridden for a long time and cannot leave the bed to move, muscle contraction ability is obviously weakened, and muscle atrophy will also occur, even with adequate nutrition and calcium supplements, the bone mass cannot be completely restored to normal. Through active nutrition and rehabilitation, the patient’s bone mass can be gradually restored to a certain degree, but it cannot be completely restored to the normal level.