>>98
An implant made of titanic alloy produced by molding a shape of a femoral medullary cavity during a surgery was introduced to the clinical field in 1989 .
As this implant as an anatomical stem had a 3-dimensional curve, it fitted to a femoral medullary cavity, good clinical results were obtained in fitting and filling.
But, such an implant often failed in initial fixation due to its smooth surfacial condition, so that a non-infectious loosening was caused within a short term after a surgery in many cases.
с
