In a message dated 7/5/99 12:44:01 PM Eastern Daylight Time, [log in to unmask] writes: << Even I am trying to figure out? I wonder if it is some kind of new research . Therefore my question on the net. Thanks very much..........Original >> I can not figure out how something ( a bone can lengthen) unless there is a mechanism for growth or traction. Steve Marcum PT %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%