Hello there,,
Well what exactly do you mean by knee twitching?? Is it like something is pulling from inside?...muscle twitching is a common occourance....so the symptoms need to be accurately addressed.
Cracking noise if not accompinied with knee instability or pain ia not a problem as such.
Do consult online for proper tailormade advise and treatment plan.
Regards.
Next Steps
Dr Raviraj Francis
MPTh(Rehab),MPT(MSk).UK