Chapter 21 Orthopedics Matching: Open Reduction Internal Fixation

cancellous screw

screw with a wider thread and wider spaced threads used in epiphyseal bone

Cortical screw

screw with closely spaced shallow threads for dense bone found in the diaphysis

lag screw

screw that is partially threaded to compress bone between the screw head and the distal threads.

Cannulated screw

screw with hollow central shaft, usually inserted over a guide wire or pin

Kirschner wire

Wire segments with smaller diameter used for stabilization/fixation or guide for screws.

Steinmann pin

Pin segments in larger diameters used for skeletal traction or as guide pin for screws.

Rod or nail

placed in the intramedullary shaft for fractures of long bones-early ambulation

Orthopedic plates

used with screws and bent to fit the bone to hold the fragments in place during healing

Stainless Steel

can be used to secure bone to bone, such as the sternum

artificial knee joint components

femoral/tibial and patellar components

artificial hip joint components

acetabular and femoral stem and head components

Stimulator

low-level current treatment of nonunion or delayed union

Polyester, braided nylon

Used to attach tendon to bone(suture material)

Tap (Tapping)

used to create the threads in the bone, typically cortical bone

PMMA polymethyl methacrylate

bone cement to hold prosthesis in place