Medial Patellofemoral Ligament Reconstruction Using a Trident-Shaped High-Strength Suture Tape-Augmented Hamstring Graft for Patellar Dislocation.

Abstract

Medial patellofemoral ligament (MPFL) reconstruction is an established method of treating patellofemoral dislocation. On the basis of the results of recent anatomic studies of the patellar insertion of the MPFL, a trapezoid MPFL can be reconstructed using the autologous semitendinosus tendon. In addition, suture augmentation performed with a suspensory fixation device may help to increase fixation stability. This method may provide more stable patellar fixation with a bioabsorbable suture anchor. Moreover, this method allows anatomic positioning of the graft without extensive bone tunnel creation, which may preserve patellar bone stock. In this technique, the graft assumes a trident configuration-double-bundle hamstring tendon flanking a central high-strength suture tape, reminiscent of a 3-pronged spear. In this technical note, we describe a surgical technique for MPFL reconstruction using ultra-high-molecular-weight polyethylene suture tape-augmented hamstring graft for patellar dislocation.