Letter regarding Lerch et al.: Bone remodelling around the Metha short stem in total hip arthroplasty: A prospective dual-energy X-ray absorptiometry study

摘要

I am writing in regard to the article by Lerch et al., an online-first publication from the 20th September 2011 issue entitled "Bone remodelling around the Metha short stem in total hip arthroplasty: a prospective dual-energy X-ray absorptiometry study" [1]. While carrying out a literature review on the use of the Metha stem we noticed that the ethical approval number for this paper "Ethic Committee No. 4226" is registered on controlled-trails.com (Trial Reference Number ISRCTN54967983) by the same authors of the above mentioned paper as a controlled trial comparing two groups of 25 patients [2].