Positioning and Direction of Rotator Cuff Anchors:

- see rotator cuff repair menu

- Bone Anchor Direction: 
       - modified convergence technique:
               - bone anchors are inserted at anterior aspect of supraspinatus foot print;
       - direction of insertion: 
               - insertion of anchors at a 45 deg angle to the bone surface is recommended; 

                  

                   - references: 
                         - The deadman theory of suture anchors: observations along a south Texas fence line.  
                         - A biomechanical evaluation of suture anchors in repair of the rotator cuff.
                         - Pullout Strength of Suture Anchors Used in Rotator Cuff Repair.   
                         - The Effect of the Angle of Suture Anchor Insertion on Fixation Failure at Tendon–Suture Interface After Cuff Repair: Deadman's Angle Revisited 
                         - Suture Anchor Insertion Angle and the Deadman Theory 
                         - Proper Insertion Angle Is Essential to Prevent Intra-Articular Protrusion of a Knotless Suture Anchor in Shoulder Rotator Cuff Repair
                         - The mechanical effects of suture anchor insertion angle for rotator cuff repair
                         - Assessment of bone quality within the tuberosities of the osteoporotic humeral head: relevance for anchor positioning in rotator cuff repair.
                         - Increasing the insertion depth of suture anchors for rotator cuff repair does not improve biomechanical stability
                         - Biomechanical Study: Determining the Optimum Insertion Angle for Screw-In Suture Anchors—Is Deadman's Angle Correct?
                         - The Effect of Insertion Angle on the Pullout Strength of Threaded Suture Anchors: A Validation of the Deadman Theory



Original Text by Clifford R. Wheeless, III, MD.

Last updated by Clifford R. Wheeless, III, MD on Saturday, April 25, 2015 5:14 pm