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.
â¢ Sutures attached to needles are the most common method of approximating skin edges. â¢ Sutures are classified as absorbable or non-absorbable and as either monofilament or multifilament. â¢ Sutures vary in their capability to provoke infection, with catgut being the most reactive and polypropylene being one of the least reactive suture