Sore knees at night in bed may be caused by osteoarthritis of the knee joint, osteoporosis of the knee joint, exertion and so on.
1. Osteoarthritis of the knee: related to age, trauma, heredity, obesity and inflammation, etc. Degenerative changes in the cartilage of the knee joints and osteophytes can cause joint pain and activity limitation, and joint deformity and swelling in severe cases, which can lead to the symptom of knee pain at night.
2. Osteoporosis of the knee joint: osteoporosis of the knee joint is mostly seen in the elderly, postmenopausal women, and also seen in those who suffer from diseases affecting bone metabolism, due to the decrease of bone formation in the knee joint and the increase of bone resorption, localized aches and pains can occur at night when sleeping.
3. Exhaustion: too much activity during the day, especially walking, running, hiking and other activities, can make the lower limbs overworked, lactic acid accumulation in the soft tissues around the knee, blood circulation is impeded, knee pain and swelling can occur at night when sleeping.
When knee pain occurs at night, you should consult a doctor in time, under the guidance of a specialist to actively carry out appropriate treatment, which will help to alleviate the discomfort symptoms as soon as possible.