I have studied your case.
You need to diagnose reason for persistent knee effusion
There is possibility of small intra-articular fracture
leading to persistent knee effusion.
If cause is treated surgery may not be required.
If it is pre patellar effusion then surgery may help.
Hope this answers your query. If you have additional questions or follow up queries then please do not hesitate in writing to us. I will be happy to answer your queries.
Wishing you good health.