Secondary Waves Defined. Secondary waves, or S-waves, are seismic waves produced by an earthquake. As one side of a fault slips past the other, the pressure that had been stored is released and travels radially away from the focus of the earthquake.
Non-Absorbable sutures include :- Polypropylene sutures, Nylon (poylamide), Polyester, PVDF, silk and stainless steel sutures. Monofilament and Multifilament Sutures. Sutures can also be divided into two types on the basis of material structure i.e. monofilament sutures and multifilament or braided sutures. Braided sutures provide better knot security whereas monofilament sutures provide better passage through tissues.
Frequently 5-0 sutures are preferred for delicate cartilages. The choice of suture type is important. The nonabsorbable sutures have a potential for late complications such as infection, foreign body reaction, and extrusion especially in cases with poor soft tissue coverage above the suture.oseph 25 occasionally used sutures named orthopedic suture to secure the tip cartilages to the caudal septum which is called today as columella-septal sutures. Dome-type sutures were first introduced in 1926 by Sebileau and Dufourmentel 26.