Acl post-op instability?

Bones, joints and muscles
1

Hey guys!

I've torn my acl back in October and went under the knife on 6th april. My rehab is going great, i go to the physical therapist 3 times a week. After 1 month, the physical therapist suggested to lower the use of my brace if I go to places where the ground is even and i won't risk falling on the ground. So I'm going to school without my brace for the last month and a half and i havent had any problems at all!

2 Weeks ago I suddently made a popping sound coming from my right knee which has been treated for my acl. I realised that while i am sitting that my knee rotates more than it should, like it turns more than I can with my left knee. I asked my physical therapist about it and when he checked if my knee was stable, he replied saying that my knee seems to be stable but he didn't say anything about why my knee rotates unusually more than it should when i am sitting. The popping sound i mentioned is not a big deal because I think that its just the mucles or something that go over eachother and make that noise because it happens often that i hear the noise. 

I hope someone understands what i am talking about and is able to give me some relevant information!

Sorry for my poor English

Thanks in advance

2

Side note: 

I never had an accident after my operation. I didnt fall or turn in a bad way that caused any pain. This has simply happened without me noticing until i started making the popping noises.

3

6 weeks now once in a while it will pop due to fluid still there if no pain it's normal I got that popped knee once or couple times a day. But I never used brace since day 1 though

4

Thanks for the reply!

Do you know anything about my knee rotating too far inward tho?