Knee creaking when bending may be a normal physiological phenomenon, or it may be caused by knee osteoarthritis or chondromalacia patella.
1. Normal physiological phenomenon: if the creaking when bending the knee joint only occurs occasionally, and there is no other discomfort, usually belongs to the normal physiological phenomenon, may be caused by the bone friction when bending, generally do not need special treatment.
2. Knee osteoarthritis: knee osteoarthritis is usually caused by degenerative changes, overwork or trauma, etc. It is more common in middle-aged and old people, and the patients may have creaking symptoms when bending the knee joints, and usually have the symptoms of joint pain and swelling.
3. Chondromalacia patella: chondromalacia patella may be associated with congenital dysplasia, incorrect sports posture or overwork, etc., more common in athletes or middle-aged or elderly women, the patient may have a creaky knee when bending, usually accompanied by pain, and in severe cases, the knee joint can not be completely straightened performance.
When the condition is serious, the knee may not be able to fully straighten. It is recommended to go to the regular hospital for consultation, to make a clear diagnosis, and then targeted treatment, so as to avoid delaying the condition.