I have studied your case.
As per your age and history there is possibility of soft tissue injury
Most commonly meniscus
may miss meniscus tear,diagnostic arthroscopy
can help and cure the problem.
As per your symptoms you need to do physiotherapy
and knee exercises to improve range of motion .
Small meniscus tear can be managed conservatively with physiotherapy with USG andTENS.
Meniscus injury can be managed by arthroscopic repair,and same day you can go home.
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.