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Hip Prosthesis (Biomet)

Health Sciences · Robert W. Jackson Arthroscopy

A metal artificial hip consisting primarily of a semi-hemispherical “ball” element attached to a tapered “femoral” stem. The two elements are rigidly joined by a friction fit joint with a peg emerging from the lower surface of the ball fitting into a socket on the stem.

The outside surface of the ball has a high polish while the stem has a duller finish. The upper portion of the stem has a highly textured surface The stem has three small holes along the edge of the upper surface. These likely facilitate removal.

Accession Number: 2023.JAC.280

Alternative Name:

Primary Materials: Unknown Metal Alloy


Written in a slightly green tinted pigment at the tip of the peg on the lower surface of the ball: “A4X27// B// 249840”

Printed on faint letter on along the outer surface of the stem: “BIOMET 113703 Ti 6AL 4V 310800”
Printed on the stem opposite the previous text: “2MM STEM”

Dimensions (cm): Height = 15, Width – 4.5, length = 4.2.


A hip prosthesis is a common treatment for elderly patients when the femoral neck is fractured and displaced. Femoral neck fractures (often called “hip fractures”) are a very common injury among elderly people.


This item is in good cosmetic condition and appears to be intact. There are light abrasions across the surface of the ball and stem. There is a brown residue on the textured upper portion of the stem.

Associated Instruments:

Manufacturer: Biomet, Inc., Warsaw, Indiana, USA.

Date of Manufacture: Mid-to-late 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:

Historical Notes:

Biomet was founded in November of 1977. In 2015, the company became part of Zimmer Biomet following its acquisition by Zimmer holdings.

  • Donated to UTSIC