Hi, thanks for writing to HCM.
If the ACL rupture is a "Complete" (full thickness tear) one, then there is no way to manage it conservatively (either with physio or medicines) to make your knee normal.
As you are an active female and involved in playing hockey, I suggest you to undergo "Arthroscopic reconstruction of ACL" to regain normalcy.
For making the diagnosis of ACL rupture, arthroscopy
is not at all necessary (as it is an invasive procedure). If in doubt, a repeat MRI
scan will give all the details of soft tissue
damage inside the knee joint.
Hope this information is helpful. Good day