Electronic Letters to:

Hip: T. Kalteis, M. Handel, H. Bäthis, L. Perlick, M. Tingart, and J. Grifka Imageless navigation for insertion of the acetabular component in total hip arthroplasty: IS IT AS ACCURATE AS CT-BASED NAVIGATION? J Bone Joint Surg Br 2006; 88-B: 163-167 [Abstract] [Full text] [PDF]

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Imageless navigation for insertion of the acetabular component in total hip arthroplasty

Paul d Hamilton, Gill I, Bismal Q   (31 March 2006)

Imageless navigation for insertion of the acetabular component in total hip arthroplasty 31 March 2006
Paul d Hamilton, specialist registrar princess royal hospital haywards heath, Gill I, Bismal Q Send letter to journal: Re: Imageless navigation for insertion of the acetabular component in total hip arthroplasty pauldhamilton{at}gmail.com Paul d Hamilton, et al.	Sir, We read this article with great interest and would like to make the following point. Although there is an obvious learning curve to navigation by CT-based and imageless placement of the acetabular cup, one of the other issues is the failure of the method of navigation system intra-operatively, as was seen in this study in five of the cases. These patients should be included in prospective trials in the analysis, in the group to which they were assigned on an intention-to-treat basis, and we were disappointed at their exclusion. We feel that it may generate bias to only present results where the navigation system was successful. P.D. Hamilton, Specialist Registrar, I. Gill, Q. Bismal, Princess Royal Hospital, Haywards Heath, UK.