Health Sciences · Temerty Faculty of Medicine
A metal revision implant in the form of the acetabulum, the cup-shaped socket of the hip. The implant has a smooth, polished finish. Part of the perimeter of the cup is surrounded by a flat ring. The implant is pieced along its surface and rim with screw holes that are used to secure the implant with bone screws.
Accession Number: 2026.med.79
Alternative Name: M. E. Müller Ring
Primary Materials: Metal
Markings:
Dimensions (cm): Height = 2.6, Width = 6, Length =8.5.
This revision prosthesis is to stabilize the acetabulum in order to implant a prosthetic hip. It is used in situations of major bone damage, for instance from osteoporosis.
This artifact appears to be unused. It has very light abrasions on its surface.
Associated Instruments:
Manufacturer:
Date of Manufacture: Post 1976.
These items were among a small collection of artifacts provided by Dr. Allan Gross. This is one of two that remain with the Department of Orthopaedics at Mount Sinai Hospital. It was borrowed following a research interview on 2 March 2026, catalogued, and returned.
Chris Colton (2009). “Maurice E. Müller (1918–2009).” The Journal of Bone & Joint Surgery British Volume 91.9: 1263-1263.
Clemens Kösters, Benedikt Schliemann, Dieter Decking, Ulrich Simon, Matthias Zurstegge, and Jens Decking (2015) “The Müller acetabular reinforcement ring–still an option in acetabular revision of Paprosky 2 defects? Longterm results after 10 years.” Acta Orthopædica Belgica 81, 2: 257-263.
Dr. Maurice Edmond Müller (1918-2009) was a Swiss orthopaedic surgeon who developed and commercialized numerous orthopaedic implants through the company Protek AG. (See Colton 2009).
Müller created the acetabular reinforcement ring in 1976 (Kösters et al 2015, 258).
In 1993 Müller’s charitable foundation established the Maurice E. Müller Institute for Learning, Teaching, Documentation and Evaluation, an endowed chair in orthopaedics at the University of Toronto.