A) Suturing exercise with the right hand and needle at 90° in the needle holder. B) Suturing exercise with the left hand and needle at 90° in the needle holder. C) and D) Suture with both hands, with a needle at 45° in the needle holder.
In the second exercise, the suture line was oblique to the right and the hand to be used was the left. In this case, the needle holder was parallel to the suture line, the needle perpendicular to the needle holder and suture line (In the third exercise, the incision was perpendicular to the midline. As the incision is positioned in the middle, the needle holder could be in the right or left hand, but no longer parallel to the suture line. Therefore, for the needle to be perpendicular to the suture line, it should be angled at 45° with the needle holder towards the tip of the instrument. This was done in order to maintain the same distance from the suture edges, aiming at adequate co-option of the suture line edges (In this exercise, eight stitches were performed, from the outside to the inside, in the north, south, east and west cardinal positions, in addition to intermediate stitches. In the cardinal points, the needle is positioned at 45° in the needle holder. In the intermediates at 90° and in the low points, the suture is performed by holding the needle holder with the inverted hand (back hand), always turning the thread downwards for the execution of the knots (
