Easily Missed?

Perilunate dislocation

BMJ 2012; 345 doi: http://dx.doi.org/10.1136/bmj.e7026 (Published 6 November 2012)
Cite this as: BMJ 2012;345:e7026

Recent rapid responses

Rapid responses are electronic letters to the editor. They enable our users to debate issues raised in articles published on bmj.com. Although a selection of rapid responses will be included as edited readers' letters in the weekly print issue of the BMJ, their first appearance online means that they are published articles. If you need the url (web address) of an individual response, perhaps for citation purposes, simply click on the response headline and copy the url from the browser window.

Displaying 1-2 out of 2 published

30 December 2012

I am surprised that such a blatantly obvious velar lunate dislocation was missed. What is often missed, is the scapho-lunate disassociation by virtue of the rupture of the scapho-lunate ligament, leading to a gap, often called the Terry Thomas sign by the older generation. Careful observation of the PA & lateral films of Gilula's lines, the "3Cs" sign - ie the normal articular gaps seen between the distal radius, lunate and capitate as shown in the poor quality later radiograph of figure2, will reduce the risk of missing these injuries.
Robert's first figure on the anatomy of the carpal tunnel is more accurate. The transverse section of the wrist going through the proximal carpal row and not the distal carpal bones, would be more relevant. As most A&E radiography technicians do and interpret/report, and nurse practitioners & junior doctors are in the forefront, it is important that education should be focused on these groups, by constructive feedback.

Competing interests: None declared

Sidha Sambandan, Orthopaedic GPwSI

Norwich Community Hospital, 44Brettingham Avenue, Cringleford, NR4 6XQ

Click to like:

10 December 2012

I am sure that I will not be the only one to notice the quality of the image - Figure 1, in this article. It is a totally inadequate representation of the carpal tunnel and will do little to keep anatomy "alive" at a time that less and less attention is being paid to the subject.

The median nerve looks like a tendon and its branches totally unrealistic, the flexor tendons are arranged entirely wrongly, the median nerve seems to be "invading" the synovial sheaths which in turn are quite incorrectly drawn.

Just to give you some idea as to how the carpal tunnel should be represented, I attach two images. I fully appreciate that you wanted to keep the image simple but this is no reason to draw it so badly.

Competing interests: None declared

Robert H Whitaker, Anatomist

University of Cambridge , Selwyn College, Cambridge CB3 9DQ

Click to like:

THIS WEEK'S POLL