Titanium Polyaxial Screw - 4.0 Mm To 8.5 Mm Diameter, 25 Mm To 60 Mm Length, Brown Color, Surgical Grade, Sterilized, Multi-directional Head For Enhanced Alignment

Diameter : Polyaxial screws are available in various diameters, typically ranging from 4.0 mm to 8.5 mm. The diameter is chosen based on the patient's anatomy and the surgical procedure's requirements.
Length : The length of polyaxial screws can range from 25 mm to 60 mm or more. The appropriate screw length is determined based on the depth of the pedicle and the desired level of fixation.
Material : Polyaxial screws are usually made of biocompatible materials such as titanium or stainless steel. These materials offer strength, durability, and compatibility with the human body.
Thread Design : Polyaxial screws feature threads along their length, which provide stability and engagement with the bone. The thread design may vary, including variable pitch or constant pitch, depending on the manufacturer.
Polyaxial Head : The distinguishing feature of polyaxial screws is their polyaxial head. This head allows for multi-directional movement and facilitates angulation and alignment during screw placement. The polyaxial head typically includes a mechanism to secure the connecting rod or plate.