Why does my knee hurt when I walk, not when I lie down?

Symptoms of lying knee pain without walking are generally considered to be caused by calcium deficiency and lumbar spondylosis.
1. Calcium deficiency: Calcium deficiency generally causes joint pain and limited movement, muscle relaxation when lying down, resulting in lying knee pain. When walking, the symptoms of knee pain disappear because of increased blood circulation.
2. Lumbar spine disease: abnormal lesions of the lumbar spine, such as lumbar intervertebral disc herniation and other diseases, walking because of the distraction and lumbar blood circulation to improve the pain symptoms weakened; lying down, there will be a nerve root compression symptoms, resulting in knee pain when walking lying down pain phenomenon.
It is recommended that the patient timely lumbar spine examination to clarify the condition, in daily life can be appropriate amount of calcium, do not carry out strenuous exercise, avoid standing for a long time, pay attention to keep warm.
If the phenomenon of knee walking pain lying down, it is recommended to go to the orthopedic department of the hospital in a timely manner, in order to clarify the cause of the disease and treatment.