Noises in knee

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Hi guys. I'm new to the forum so be gentle 😉
I have recently 3rd January undergone LL surgery to fit a precise nail to lengthen it using an ERC
I'm up to 12mm and I am getting some serious noises coming from my knee which I'm guessing is the tendon stretching. Has anyone else suffered with this?  It's a bit worrying but if others have had it I will stop worrying 😀 I do not see my surgeon for another 2 weeks so thought someone on here might know the answer. Thanks in advance. Pete

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Thanks guys for the input. It appears a lot of you have this cracking noise! Mine is more like something stretching someone said it was my tendons adjusting as my leg gets bigger not sure what to believe I just hope I don't get thrown out the Cinema when I stretch my legs lol it is very audible 😳 Lol