Hello,
I have studied your case.
As per your symptoms you need to do
physiotherapy and knee exercises to improve knee kinetics .
If pain persist then you may need to do
MRI again to see for any functional defect.
ACL effusion can be managed conservatively with physiotherapy with USG and
TENS.
Exercises for knee which will help you-
In lying flat supine on back – move your ankle up and down[plantar flexion dorsiflexion],keeping small towel below knee-press your patella[knee cap ] on towel and hold for 15 sec,lift your leg straight alternately [10-15 times].
Lying on your tummy- flex knee alternately, make knee rotation in flexion.
Sitting on chair- extend your legs alternately [hold in extension for 15 sec]
Standing half squat taking support of wall to back.
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.
Take care