A metal artificial hip replacement

Contributed by The Thackray Museum

One of the first femoral prostheses made by Thackray of Leeds and the stem's inscription. © The Thackray Medical Museum

John Charnley, an orthopaedic surgeon, approached Chas. F. Thackray to make artificial hip replacements to his designs.The association between Chas. F. Thackray of Leeds and John (later Professor Sir John) Charnley, established in 1947 and which lasted until his death in 1982, is one of the great partnerships between medicine and commerce. Charnley was a highly skilled orthopaedic surgeon and his total hip replacement procedure, developed in the 1960s, has benefited hundreds of thousands of patients. Surgeons around the world still continue his work.

This object is known as a 'femoral component prosthesis' and is made of stainless steel. It was fitted into the top of the thigh-bone and the ball-joint engaged in a hollow dome (an 'acetabular cup') in the pelvis, enabling the leg to articulate. This type is the 'Mark 1 Standard', etched on the stem as 'MK 1S' and is one of three initial designs devised by Charnley. 7/8" (note imperial units) is the ball-joint's diameter, favoured by Charnley as giving few problems resulting from wear through friction.

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It was made between 1966 and 1975


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