This instrument is composed of a smooth handle from which extends a slim neck and a hook shaped head to guide the wire around bone’s circumference. Many orthopedic approaches require the use of wire to provide stability such as to wrap around a bone to approximate fracture edges and this instrument can be used to comfortably manipulate wire.Surtex instruments Demel wire guides are available in various sizes to suit manipulating wires in different operation fields. Moreover, extension bows are crafted to apply a longitudinal force of tension that prevents rotation of the wire within the apparatus. Others such as Bohler Extension Bows
are used in skeletal traction.The pin is drilled behind tibial muscles and the traction is applied through the stirrup of the bow. Surtex instruments manufacture a range of extension bows with several sizes and patterns.