One year after femoral head replacement, there is a small amount of effusion, no pain, no special treatment, if the effusion may be related to excessive activities or joint wear and tear, the application of medication, physical therapy, surgery. One year after femoral head replacement, there is a small amount of effusion, usually there is no special discomfort symptoms, no special treatment, mainly to reduce walking and squatting, pay attention to keep warm. If there is a lot of fluid, you can take medication, oral synovitis granules, or you can take ultrashort wave physiotherapy or infrared physiotherapy. Oral non-steroidal anti-inflammatory drugs such as nimesulide dispersible tablets or ibuprofen extended-release tablets. If there is a lot of fluid and the pain is getting worse and conservative treatment is not effective, revision surgery should be considered. Depending on the amount of fluid, conservative treatment or surgery may be appropriate one year after femoral head replacement.