Complications for Reducing Posterior Shoulder Dislocations Neurovascular injuries, which are uncommon due to the anterior location of the neurovascular bundle Fractures of the humeral head, glenoid rim, and greater and lesser tuberosities, due to forceful reductions and manipulations Increased displacement of fractures and worsening of associated injuries Dislocation arthropathy, adhesive capsulitis, stiffness, and chronic pain, which are consequences of late diagnosis more so than the reduction Equipment for Reducing Posterior Shoulder Dislocations A bed sheet Intra-articular anesthetic: 20 mL of 1% lidocaine, 20-mL syringe, 2-inch 20-gauge needle, antiseptic solution (eg, chlorhexidine, povidone iodine), gauze pads Materials and personnel required for procedural sedation and analgesia (PSA) Shoulder immobilizer or sling and swathe One or two assistants are needed.