https://www.vetnurse.co.uk/f/clinical-discussions/10297/surgical-screws Can anybody help me, what is the difference between cancellous and cortical screws? Thank you. en-USTelligent Community 10https://www.vetnurse.co.uk/thread/95227?ContentTypeID=1Thu, 02 Sep 2010 13:15:05 GMT1a0763ec-3885-442c-853e-6cef656dfec5:8434ee39-38fc-45bd-8c79-253d30bd7128Vicky RVN<p>Silly way to remember which is which...cancellous are loose (say it canceloose!) so have wider thread, cortical are tight so have narrower thread!</p><div style="clear:both;"></div>https://www.vetnurse.co.uk/thread/95158?ContentTypeID=1Wed, 01 Sep 2010 20:32:28 GMT1a0763ec-3885-442c-853e-6cef656dfec5:767b1604-2c36-4c75-bf60-2c8ca2d76ecbRobocop<p>Thank you <img src="http://www.vetnurse.co.uk/emoticons/new/Very_happy_smiley.png" alt="Big Smile" /></p><div style="clear:both;"></div>https://www.vetnurse.co.uk/thread/95131?ContentTypeID=1Wed, 01 Sep 2010 18:05:37 GMT1a0763ec-3885-442c-853e-6cef656dfec5:8c78caf5-6ff6-4835-a177-1af8d21605cfSamantha Bell BSc(Hons) DipHE CVN DipAVN RVN VNA M<p><span style="font-size:medium;"> <p><span style="color:black;"><span style="font-size:small;"><span style="font-family:Times New Roman;">Cortical screws have closely-spaced, shallow threads and larger core-to-outer diameter ratios than cancellous screws. Cortical screws are stronger than cancellous screws of the same outer diameter. They are also usually blunt ended. Cancellous screws are designed for fixation of cancellous bone. They are most commonly used in the metaphyses of long bones where cancellous bone is&nbsp;mostly seen.&nbsp;They have more deeply cut and more widely spaced threads compared to cortical screw. Since cancellous bone is much less dense than cortical bone, the screw threads cut their path in the bone when the screw is inserted so cancellous screws are self-tapping. </span></span></span></p> </span></p><div style="clear:both;"></div>