Fig. 3From: Retraction mechanics of Finochietto-style self-retaining thoracic retractorsSpeed and displacement of the blade as a function of rotation of the handle: result of two clicks (one complete rotation) of the handle. The blade speed is zero at the start and end of each click (0° and 180° and 360°) and maximal at each mid-click (90° and 270°)Back to article page