摘要 : Over the last 40 years since the introduction of the "safe zone" concept by Dr. Lewinnek, orthopaedic hip surgeons around the world have relied on these target values to avoid instability in total hip arthroplasty (THA). In 1978, ... 展开 Over the last 40 years since the introduction of the "safe zone" concept by Dr. Lewinnek, orthopaedic hip surgeons around the world have relied on these target values to avoid instability in total hip arthroplasty (THA). In 1978, the cost of a gallon of gasoline was $0.63, Jimmy Carter was president, the world's first in-vitro fertilization was successfully performed, and hip replacement patients stayed in the hospital for almost 3 weeks. Since that time, many things in the world and in hip replacement surgery in particular have changed. 收起