Figure 2.

Photographs demonstrating the insertion of IS screws using “blunt end” KW technique. (a) The template was assembled intraoperatively, and a 2.5 mm KW was inserted in an antegrade fashion through the guiding hole. (b-c) Pelvic inlet and outlet fluoroscopy views were conducted to observe if the extension line (white dotted line) of KW was correctly positioned. (d-e) The KW was hammered until the tip reached the sacroiliac joint, and a 6.5 mm cannulated screw was inserted along the KW up to the sacroiliac joint. (f-h) The KW was pulled out and reversed such that its blunt end could be inserted through the hollow passage of the cannulated screw, and the blunt end was advanced inside the cancellous bone of sacrum until reaching the contralateral sacroiliac joint.