Gilula's lines

Gilula's lines are three arcs drawn on an AP radiograph of the wrist used to assess the alignment of the carpal bones.[1]

Gilula carpal arcs.

Clinical use

There should be no step-off in the contour of the lines when drawn on a normal wrist.

First arc running along the proximal convexity of the scaphoid, lunate and triquetrum
Second arc running along the distal concavities of the scaphoid, lunate and triquetrum
Third arc running along the proximal curvatures of the capitate and hamate

References
  1. Browner, Bruce D. (2009). Skeletal Trauma: Basic Science, Management, and Reconstruction. Elsevier Health Sciences. p. 1377. ISBN 1416022201. Retrieved 13 November 2017.
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