Knee replacements – complications?

Hello,
I need some information on knee replacement. My brother will probably had to do this knee replacement and he is afraid of possible complications; so, the question is: what are possible complications when having knee replacements?

Hey,
This is a surgery, so always is possible unexpected reaction to the anaesthetic… of course, if person is allergic to one- this reaction is possible with every surgery. Then specific complications, which are connected just to knee replacements. This complications are: problems with healing, instability, dislocation, restricted movement, blood clots. This complication describe small percentage of cases with knee replacements (from 1 to 5 %)… I think your brother is to scared, which is normal reaction to surgery…try to calm him down and persuade him, he’ll be all right.