Saturday, June 4, 2011

Metal-on-metal bearings: THE EVIDENCE SO FAR.

This is a wonderful review of the MOM hip bearings from 1937 though the present.  I think it covers some very important points and was just published.  I will follow on with the discussion of the key points in the subsequent blog posts from the journal article below:

 (1) Does early intervention prevent bone/soft tissue loss: What is the outcome of revision surgery?
 (2) Do we know the threshold for revision (when should you have a revision?)
 (3) What is the most recent information on systemic effects of metal debris and  carconogenesis?
 (4) Is there an acceptable cut off level for blood metal ion levels?
 (5) What is the frequency of adverse metal reactions?
 (6) Any difference between female and male issues with MOM hip?
 (7) What is the difference between the information from plain radiographs, ultrasound , MRI and CT  in terms of  aiding in the diagnosis of early implant failure and sof-tissue complications?

Department of Orthopaedics, University College Hospital, 235 Euston Road, London NW1 2BU, UK.


Lately, concerns have arisen following the use of large metal-on-metal bearings in hip replacements owing to reports of catastrophic soft-tissue reactions resulting in implant failure and associated complications. This review examines the literature and contemporary presentations on current clinical dilemmas in metal-on-metal hip replacement.


  1. Connie- How do you get to read this paper ?

  2. Dee, if you have access to Pub Med (www,pub you can type in the following and get the summary:

    J Bone Joint Surg Br. 2011 May;93(5):572-9. Haddad FS, Thakrar RR, Hart AJ, Skinner JA, Nargol AV, Nolan JF, Gill HS, Murray DW, Blom AW, Case CP.

    If you want the orignial article, you have to buy it or you can get it from a medical library.

    Ask your Orthopedic surgeon to pull it up for you on Pub med and print it out. They have access to Pub Med. You will have to give him the above reference and he can print it.