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John Charnley

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Sir John Charnley was a British orthopedic surgeon who developed low-friction total hip replacement at Wrightington Hospital in England during the 1960s. His system replaced the damaged joint with a small metal femoral head articulating against a plastic socket, with components fixed using acrylic bone cement. Charnley also advanced operating-room practices intended to reduce infection, and his principles became foundational to modern total hip arthroplasty for patients with severe joint disease.

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What did John Charnley invent?

British orthopedic surgeon John Charnley pioneered the low-friction total hip replacement surgery in the 1960s. His revolutionary technique involved replacing the joint with a metal femoral head and a polyethylene socket to drastically reduce friction.

Where did John Charnley perform his groundbreaking hip surgeries?

Charnley developed and refined his hip replacement procedures at Wrightington Hospital in Lancashire, England. He set up a specialized workshop there to test different materials for his artificial joints.

What problem did John Charnley's low-friction arthroplasty solve?

Before Charnley's invention, early artificial hip joints suffered from massive friction and wear, causing them to fail quickly. By using a smaller metal femoral head rotating in a high-density plastic socket, he extended the life of the implant significantly.

How many hip replacements did John Charnley perform?

While he performed thousands of procedures during his career, his techniques were so successful that they became the global standard for joint replacement. His work at Wrightington Hospital laid the foundation for modern orthopedic surgeries performed today.

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