Acta Medica Okayama volume73 issue5
2019-10 発行

Twist Knot: A New Sliding Noose in Adjustable Suture Strabismus Surgery

Shibata, Kiyo Department of Ophthalmology, Okayama University Hospital
Hamasaki, Ichiro Department of Ophthalmology, Okayama University Hospital
Shimizu, Takehiro Department of Ophthalmology, Okayama University Hospital
Kono, Reika Department of Ophthalmology, Okayama University Hospital
Ohtsuki, Hiroshi Department of Ophthalmology, Okayama Saiseikai General Hospital
Morizane, Yuki Department of Ophthalmology, Okayama University Hospital
Shiraga, Fumio Department of Ophthalmology, Okayama University Hospital
Publication Date
2019-10
Abstract
To permit noose movement without fraying the sutures following strabismus surgery, we designed a new sliding noose, the “twist knot” and investigated its advantages and disadvantages. We measured the tensile strength required to move the twist knot in a tightly tied state (134±19 gf) and in a loosened state (21±7 gf), and that required to move the conventional sliding noose in a tightly tied state (48±14 gf), and used the Kruskal-Wallis test to compare them. A significant difference was observed among the three tensile strengths (p<0.001). The twist knot technique allowed easy sliding without the multifilament braided suture becoming frayed and a knot to be firmly fixed without slipping. However, if the 2 strings of the pole sutures exit from the sclera at 2 widely separated positions, the sliding noose may become slack. Therefore, the distance between the pole sutures should be small. The simple twist knot technique was found to be an effective approach following adjustable surgery of strabismus.
Document Type
Case Report
Keywords
adjustable suture
the new sliding noose method
tensile strength
strabismus surgery
esotropia
Link to PubMed
Thumnail 73_5_463.pdf 5.57 MB