Interference screw

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An interference screw is a direct tendon-to-bone interference fixation device. It is compression fixation device, which relies on the screw threads to engage and compress the graft for fixation. It is most commonly use in anterior cruciate ligament reconstruction.

Specific types 
  • Kurosaka screw: type of interference screw, is designed to anchor an ACL graft into the lateral femoral condyle and proximal medial tibial metaphysis

Radiographic features

Plain radiography

They can either be metallic / radiodense or bioabsorbable (radiolucent). They are usually seen on either end of the tunnel and in the can of a bioabsorbable screws only the tunnel is seen.

See also