Technique for Insertion of the Conventus Cage for Distal Radial Fracture Fixation

Abstract

OverviewIntroductionUse of the intramedullary Conventus DRS Cage and fragment-specific screw fixation of distal radial fractures minimizes soft-tissue trauma, leading to earlier and improved wrist and finger motion while reducing traditional complications seen with internal fixation of distal radial fractures.Indications & ContraindicationsStep 1: Reduce the FractureReduce the fracture with closed or, if necessary, open methods to achieve anatomic restoration of articular congruity, radial inclination, radial length, volar tilt, and coronal shift.Step 2: Provisionally Stabilize the FractureProvisionally stabilize the reduced fracture for insertion of the cage and fragment-specific screws with either longitudinal finger-trap traction or longitudinal Kirschner wires.Step 3: Prepare for Cage FixationPrepare the distal part of the radius for cavity preparation and insertion of the Conventus DRS Cage.Step 4: Insert the Conventus DRS CageInsert the previously chosen small or large Conventus DRS Cage.Step 5: Fix the Fracture FragmentsAnatomically fix the fracture fragments to the cage and radial shaft.Step 6: Confirm Fracture StabilityMove the wrist through a full range of motion while assessing fluoroscopically whether the fracture has been stabilized with the cage-and-screw construct.Step 7: Close the WoundClose the skin incision and cutdown wounds and apply dressings.ResultsThe Conventus DRS Cage has been used for treatment of distal radial fractures in the U.S. for >3 years.Pitfalls & Challenges