He found that joint surfaces might be changed by implants cemented to the bone. His design consisted of a stainless steel, one-piece femoral stem and head, and a polyethylene acetabular part, each of which were fastened to the bone utilizing PMMA bone cement. For over two decades, the Charnley low-friction arthroplasty and its by-product designs were essentially the most-used techniques on the planet.
The Exeter hip replacement system was developed at the same time. Since Charnley, improvements have been continuous in the design and technique of joint alternative with many contributors, including W. I. Harris, whose group at Harvard pioneered uncemented arthroplasty methods with the bone bonding directly to the implant. The modern total hip alternative was pioneered by Sir John Charnley, expert in tribology at Wrightington Hospital, on England in the 1960s.
With the help of the local bicycle store, he devised ring external fixators tensioned like the spokes … Read More