Indications Thumb metacarpal fracture Scaphoid fracture Lunate fracture Thumb ulnar collateral ligament injuries De Quervain's tenosynovitis Contraindications None Complications Thermal injury (caused by the exothermic reaction between plaster or fiberglass and water) Excessive pressure causing skin sores and / or ischemic injury Excessive tightness of circumferential wrapping may contribute to compartment syndrome Equipment Stockinette (one piece to cover the area from MCP joints to mid-forearm and a second piece to cover the thumb from the tip to the base of the metacarpal) Roll padding (eg, cotton roll) 5-cm (2-inch) width Plaster or fiberglass splinting material 7.5-cm (3-inch) width—enough to cover from the DIP joint of the thumb to the mid-forearm Strong scissors and / or shears Elastic bandage 5 cm (2-inch) width Lukewarm water and bucket or other container Nonsterile gloves Positioning The patient should be positioned so that the operator has appropriate access to the patient's affected hand.