The Acumed Cannulated Screw System is intended for fixation of fractures, fusions, and osteotomies of large and small bones appropriate for the size of the device. The screws are available in two diameters (6.5 mm and 7.3 mm), in lengths ranging from 30 mm to 150 mm to accommodate various fracture patterns and patient anatomy. All screws are cannulated in order to be used over a guide wire, and each screw is either partially or fully threaded using a cancellous thread form.
To accommodate a wide range of fracture patterns and varying patient anatomy, 6.5 mm and 7.3 mm cannulated screws are either partially (16 mm or 32 mm) or fully threaded. The cannulated screws and instruments also allow for minimally invasive percutaneous insertion. Screws are available in lengths ranging from 30-150 mm, all of which can be used over a guide wire.
Partially threaded screws may be used to lag one bone fragment to another, where the bone fragment is captured by the threads of the screw and pulled toward the near cortex fragment on the head side of the screw. Fully threaded screws are intended to be used to stabilize fractures with little to no compression across the fracture.
The Cannulated Screw System is commonly used in the hip, pelvis, knee, ankle, and foot. Potential applications for the 6.5 mm screws include: tibial plateau and femoral intercondylar fractures, ankle arthrodesis, subtalar arthrodesis, and triple arthrodesis.
Potential applications for the 7.3 mm screws include: femoral neck and head fracture, acetabular fracture, sacroiliac joint disruption, and calcaneal fracture.