Synthes 387.277 Orthopedic 4mm Cancellous Driver 11" Excellent Condition

Synthes 387.277 Orthopedic 4mm Cancellous Driver 11"

• Model: 387.277
• 4.0mm
• Overall Length: 11 inches (27.9cm)

The 4 mm Cancellous Driver is an instrument used in orthopedic surgery for inserting or removing cancellous screws of 4.0 mm diameter. Cancellous screws have coarse threads and are used in softer, more porous bone (like metaphyseal regions, cancellous bone). A driver of this size will have a tip tailored to the screw head type (often hex or proprietary Synthes socket) and must deliver sufficient torque to seat the screw securely without stripping the head or damaging bone. The somewhat longer length (≈ 11 inches) is beneficial for reaching screws placed deeply (e.g. in pelvis, proximal femur, or when working through retractors) or when working in minimally invasive or constrained exposures.

Because of its role, this 387.277 driver must balance rigidity (so you don’t lose torque or squirm under load) with manageability (so you can maneuver it in tight spaces without hand fatigue). The shaft is likely polished or satin finish to reduce corrosion, and the junctions (tip‑to‑shaft, any socket fit) must be precisely machined to avoid wobble. The handle (if T‑handle or straight handle) should be ergonomic and provide good grip, even when wet. Clean engagement with the screw head is crucial: driver heads that are slightly rounded, or shafts that are bent, can lead to screw head stripping or difficulty removing or inserting screw.

In clinical use, this tool is part of fixation systems in trauma, reconstructive or joint surgeries where cancellous screws are used (for example in fractures involving the metaphysis, in bone graft fixation, in some pelvis or distal extremity surgeries). The surgeon must ensure the driver’s tip is fully seated in the screw head, the alignment is straight (to avoid skewing or cross threading), and that the driver is not used to over‑torque beyond what the screw/bone can tolerate. Maintenance is also important: check for tip integrity, wear, any bending or looseness in handle, and ensure the driver is properly sterilized. Because cancellous bone is softer, over‑driving or cross angle forces are more damaging in this kind of bone.

This item is used and in excellent condition.