Four prototype models created in the development of a cementless femoral stem. These prototypes represent the stem portion and do not include the acetabular shell portion. These four examples differ in form and material.
2025.med.53.1 – The shortest of the four. It is made of a beige/ yellow (possibly 3d-printed) resin. It features a hole located beneath the neck portion. The stem portion is marked with dark ink. “PLASMA COATING” is written on this portion.
2025.med.53.2 – Longer than 2025.med.53.1, but made from the same beige/ yellow (possibly 3d-printed) resin. This has two narrow wedge-shaped protrusions on either side of the stem.
2025.med.53.3 – Of similar length to 2025.med.53.2, but made from the same of a smooth grey plastic or resin. This lacks the two narrow wedge-shaped of 2025.med.53.2. It has the following information stamped or printed into one facet: “[Zimmer Logo] 82-0167-127-00// 08477800” The model is solid, lacking the hollow central channel of the other examples.
2025.med.53.4 – Slightly longer than 2025.med.53.1. Made of a metal alloy. The top of this artifact has a reflective finish, while the stem has a matte finish. This example has two shallow recesses under the neck area. It has the following text printed onto the rear facet: “[Zimmer Logo] NOT FOR IMPLANT”.
Accession Number: 2025.med.53.1-4
Alternative Name:
Primary Materials: Various
2025.med.53.1: The stem portion is marked with dark ink. “PLASMA COATING” is written on this portion.
2025.med.53.3: The following information stamped or printed into one facet: “[Zimmer Logo] 82-0167-127-00// 08477800” The model is solid, lacking the hollow central channel of the other examples.
2025.med.53.4: The following text printed onto the rear facet: “[Zimmer Logo] NOT FOR IMPLANT”.
2025.med.53.1: Height = 9.5, Width = 2.2, Length = 6.5; 2025.med.53.2: Height = 15, Width = 2.6, Length = 6.5; 2025.med.53.3: Height = 15.5, Width = 2.3, Length = 5.5; 2025.med.53.4: Height = 12, Width = 2.3, Length = 6.5
These artifacts are prototypes created during the process of developing the ZMR system of femoral stems by Zimmer, a major American medical device company. They were created as part of a collaboration with the Division Of Orthopedic Surgery at Mount Sinai Hospital.
These artifacts are in excellent cosmetic condition and appear undamaged.
Associated Instruments:
Manufacturer: Zimmer. Warsaw, Indiana, USA.
Date of Manufacture: c. Late 1990s
These items were among a small collection of artifacts donated by Dr. Allan Gross of Mount Sinai Hospital on 14 April 2025.
Additional Information and References:
The ZMR Hip Revision System of Zimmer, Inc. came to market around the year 2000 and discontinued in 2023. Dr. Allan Gross of Mount Sinai Hospital was among the designing surgeons.