Hi roco42,

some people will take at least 6 weeks or more eps. for those who have re-injured the site then that's not so good either. Be patient. You have to check out the range of motion and the strength of your quadriceps and make sure you do a lot of stretching. A good re-assessment done by your physio will let you know how you progress with your knee.

Take care!!!

Regards,
charlize29