Abstract：
OBJECTIVE:To experimentally study the behaviour of 4 types of monofilament with 3 knotting techniques, very often used in surgery, employing mechanical tests. MATERIAL AND METHODS:Four 4/0 monofilaments were chosen, two of nylon, and the other two of polypropylene. Three types of knot designs were made with each thread. The first design (D-S-S) consisted of a double half-knot (D) followed by one single (S) in the opposite direction, a third S in turn in the opposite direction. The configuration of the second design was D-S-D, and the third, S-S-D. A mechanical fracture test was performed by stretching the thread at a rate of 4N/s, the force and deformation being recorded at intervals of 100 ms. RESULTS:There was a decrease in the force and deformation in the tests on threads with knots compared to threads without knots. In all cases the rupture of the thread occurred in the knot area, presumably due to damage caused to the thread during the knotting process. The D-S-D knot had the greatest resistance with polypropylene threads, and S-S-D provided the greatest resistance with nylon threads CONCLUSIONS:Polypropylene threads, with D-S-D knots, should be more indicated to suture tissues that have to support great forces and with little deformation of the suture (e.g., tendons). Nylon threads, with S-S-D knots, would be better indicated for tissues that have to support smaller forces and that require greater elasticity (e.g., skin).
journal_name
Cir Espjournal_title
Cirugia espanolaauthors
Gil Santos L,Más-Estellés J,Salmerón Sánchez M,Barrios Cdoi
10.1016/j.ciresp.2012.02.001subject
Has Abstractpub_date
2012-06-01 00:00:00pages
388-93issue
6eissn
0009-739Xissn
1578-147Xpii
S0009-739X(12)00070-Xjournal_volume
90pub_type
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