Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(A) Abacus for calculating lesion height based on condyle size (A to E) and lesion arc. (B) Lateral x-rays of the 5 knees sized from A to E. For a scale 1/1, the D segment has to measure 12 mm long. The patient’s x-ray (scale 1/1) is superimposed on the drawing to determine its size relative to the standard 5 sizes (A to E).
