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Judet Hip Prosthesis (Maison Drapier)

Health Sciences · Robert W. Jackson Arthroscopy

A clear plastic hip prosthesis consisting of a “ball” element attached to a tapered “femoral” stem. The prosthesis is a single solid piece. A metal stem is visible within the clear stem.

A pattern of metal wires are visible within the clear ball element. These are x-ray markers that will indicate whether the device has rotated following installation.

Accession Number: 2023.JAC.281

Alternative Name:

Primary Materials: Acrylic


Due to the cloudiness of the plastic, writing on the metal stem is difficult or impossible to read. However, the following is legible at the tip of the stem that is visible within the ball: “45” and “80”.

Dimensions (cm): Height = 10.5, Max Diam. of ball = 4.


The Judet prosthesis was an early hip prosthesis that was installed transversally through the lateral cortex of the femur. (Miller 2002, 214)


There are light abrasions and signs of wear across the surface of the artifact. The inside of the head shows a cloudy deposit, possibly chemical decomposition or other deterioration. There is a significant chip out of the lower rim of the ball.

Associated Instruments:


Maison Drapier (Drapier Surgical Instruments), Paris, France.

Date of Manufacture: Mid 20th c.


The Robert W. Jackson Arthroscopy Collection was acquired by the University of Toronto from Dr. Jackson’s family on November 12th, 2020.

Additional Information and References:

Dane Miller. “Orthopaedic product technology during the second half of the twentieth century.” IN The Evolution of Orthopaedic Surgery. 211-225. Edited by Leslie Klenerman. London: Royal Society of Medicine Press, 2002.

Duncan Tennent and Deborah Eastwood. “Survival of the Judet hip prosthesis”. Journal of the Royal Society of Medicine. 91. (1998): 385-6.

K. I. Nissen. “The Judet Arthroplasty of the Hip via Gibson’s Lateral Approach.” Postgraduate Medical Journal 28, no. 321 (1952): 412–23.

Historical Notes:

The Judet hip prosthesis was introduced by brothers Dr. Robert and Dr. Jean Judet around 1947. The device was modified and improved several times following its introduction, notably with a metal reinforcement to prevent stem breakage and an x-ray marker to reveal any postoperative movement in the prosthesis. The acrylic prosthesis offered initially promising results. Unfortunately, the prosthesis tended to loosen, and the acrylic to degrade, over time. The device was subsequently abandoned and a new generation of prosthesis introduced that were made with cobalt and stainless steel alloys. However, very long-lasting examples of implanted Judet prostheses have been recorded. (see Tennent and Eastwood 1996).

  • Donated to UTSIC