Cortical & Cancellous Screws
What's the difference and the indications



While both cortical & cancellous screws are used in orthopedic fractures fixation, the region of use for both of them are so different:

First we need to take a look at the bone structure:


Compact bone is the harder outer shell of the bone while cancellous bone is the inner porous, less dense layers of the bone


So the both screws are made of Titanium (Or sometimes Stainless Steel) and both are available with locking or non locking options but the main diffenrence is the design and the region of use.


Cortical Screws has a fine pitch and are designed to anchor in cortical bone




Cancellous Screws has a coarse pitch and are designed to anchor in medullary bone



Indications & Contraindications
of Bone plates in orthopedic surgery