Page 53 - Arthroscopic Knot Tying: An Instruction Manual

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Laparoscopic Roeder Knot (Fig. 27)

FIGURE 27. A-F. Laparoscopic Roeder knot.

This version of the Roeder knot (33 ) has not been described in the arthroscopic literature. Furthermore,
it has not been compared biomechanically to other arthroscopic knots. However, it is a sliding knot that
potentially could be used in arthroscopic surgery and has been included in this manual so it can be
compared with the other modifications of the Roeder knot that are used in arthroscopic surgery.

 The post limb should be one half the length of the loop limb.
 Throw an overhand loop around the post strand (Fig. 27A ).
 Throw a second loop around both the post and loop strand (Fig. 27B ).
 Throw a third loop around both the post strand and the loop strand (Fig. 27C ).
 Wrap the tail end of the loop limb around only the loop strand closer to the joint than the previous
loop (Fig. 27D ).
 Tension the knot by gently pulling on both the post and the loop limbs simultaneously.
 While pulling on the post limb, push the knot into the joint with the knot pusher on the post strand
(Fig. 27E ).
 Lock the knot with a series of three alternating half hitches with post switching (Fig. 27F ).
o Throw an underhand loop on the original post. Tension with the knot pusher.
o Switch posts.
o Throw an overhand loop over the new post. Tension with the knot pusher.
o Switch posts.
o Throw an underhand loop on the original post again. Tension with the knot pusher.