For the Guanai forearm sling, first use a splint, plaster support or professional forearm sling to fix it, then use a professional forearm sling to suspend the elbow joint to 90 degrees and then place it on the chest in a neutral position. Suspension. The scope of application of the forearm sling: clinical upper limb fractures (such as shoulder dislocation, elbow dislocation, clavicle fracture, humeral lateral condyle neck fracture, humeral shaft fracture, double forearm fracture, etc.), hand trauma, brachial plexus injury, shoulder or upper arm Patients after trauma, shoulder surgery, stroke, hemiplegia and other upper limb diseases need to undergo forearm sling.