Superior Labral From Anterior to Posterior (SLAP) Tear
Suture anchors are the technology of choice when performing labral repair. A variety of suture anchor types exist, each with their own benefits and limitations. Suture anchors contain three components: the anchor, the eyelet and the suture. The anchor can be a screw mechanism, or an interference fit.
Materials used for anchors include various metals or bioabsorbable composites. The eyelet is a loop in the anchor through which the suture passes. Finally, the suture is what connects the under-repair tissue to the anchor. Suture can be absorbable or permanent, and varies in strength and elasticity. The ideal anchor when performing a labral repair is low profile, to eliminate the possibility of the anchor violating the glenoid cartilage, and provides excellent pullout strength.
Treatment of SLAP tears varies based on a variety of factors. Patient age, activity level and the anatomy of the tear all portend differing treatment strategies. Repair of the SLAP tear is the preferred treatment in the overhead athlete, and can allow for predictable return to sport with no loss of shoulder strength or stability.
A SLAP repair is performed through an arthroscopic approach to the shoulder. Utilizing suture anchors, surgeons reattach the torn aspect of the labrum to the glenoid. Caution is taken to ensure that suture anchors are not placed too fare anteriorly in order to avoid overtightening the shoulder. In older patients with SLAP tears, biceps tenodesis (detachment and reattachment) of the biceps tendon has more predictable outcomes.
Stiffness is a common complication following SLAP repair, so consistent post-operative rehabilitation is a mainstay of treatment. Most athletes return to sport at the 6-month mark post-operatively. Research has shown that immediate post-operative passive and active assisted flexion in the scapular plan helps to prevent stiffness and allow for more predictable return to sport and activity.
The Mitek GRYPHON Suture Anchor™ was specifically designed to be used for reattachment of glenoid labrum to bone. The anchor is constructed of BIOCRYL RAPIDE®, which demonstrates predictable resorption and bony ingrowth. It comes in a thread-in option to allow for tactile feedback during insertion, or a push-in option, which offers 15% greater pull-out strength when compared to similar anchors.
Preloaded with ORTHOCORD, the suture itself has 55 lbs. of tensile strength and is 45% less stiff than Fiberwire®. Finally, the anchor itself is cannulated, to allow for blood to channel to the surface to aid in local healing.