Orthopedic Hardware Cost Calculator

Implant cost from type, material, and procedure.

Cortex thickness (mm)

Screw application

Cortices to engage

Plate thickness (mm)

Soft tissue depth (mm)

Bone diameter at site (mm)

Tab to move between fields

Screw diameter (mm)

4.5

Screw length (mm)

Drill bit diameter (mm)3.4

Gliding hole diameter (mm)4.5

Thread pitch (mm)1.75

Pre-tapping required? (0/1)1

Insertion torque limit (Nm)2.5

Min Cortices Per Fragment3

How to Use This Calculator

Enter the Cortex thickness in mm as measured from CT or X-ray imaging.
Select the Screw application (0 = cortical lag, 1 = cortical positional, 2 = cancellous, 3 = locking, 4 = cannulated).
Set Cortices to engage (1 = unicortical, 2 = bicortical) and enter Plate thickness in mm if a plate is being used (0 if no plate).
Enter the Bone diameter at the insertion site in mm to determine appropriate screw diameter.
Review the recommended Screw diameter (mm), Screw length (mm), Drill bit diameter (mm), and whether pre-tapping is required.

How the result changes with Bone diameter at site (mm)

Cortex thickness (mm): Near cortex thickness measured from CT/X-ray in millimeters.
Screw application: 0=Cortical lag, 1=Cortical positional, 2=Cancellous, 3=Locking, 4=Cannulated
Cortices to engage: 1=Unicortical (near cortex only), 2=Bicortical (through-and-through)
Plate thickness (mm): Plate thickness if screw goes through a plate. 0 if no plate used.
Soft tissue depth (mm): Depth of soft tissue over the bone (for reference, not included in screw length).
Bone diameter at site (mm): Total bone diameter at the screw insertion point, measured on imaging.

Screw diameter (mm): Recommended screw outer diameter.
Screw length (mm): Calculated screw length rounded to standard increment.
Drill bit diameter (mm): Recommended drill bit size for pilot/thread hole.
Gliding hole diameter (mm): Gliding hole diameter for lag screws (0 if not applicable).
Thread pitch (mm): Distance between threads.
Pre-tapping required? (0/1): 1 = Yes (cortical bone), 0 = No (self-tapping in cancellous).
Insertion torque limit (Nm): Approximate maximum insertion torque to avoid stripping.

Identify Input Parameters
4 parameters
Cortex thickness (mm) = 3, Screw application = 0, Cortices to engage = 2, Plate thickness (mm) = 0 = 6 input(s) provided
Calculate Screw diameter
4.5 = 4.5
Calculate Screw length
28 = 28
Calculate Drill bit diameter
3.4 = 3.4
Calculate Gliding hole diameter
Gliding hole diameter
4.5 = 4.5