TY - CHAP M1 - Book, Section TI - Scaphoid Fracture A1 - Breed, Meghan A1 - Fitch, Robert Warne A2 - Knoop, Kevin J. A2 - Stack, Lawrence B. A2 - Storrow, Alan B. A2 - Thurman, R. Jason PY - 2021 T2 - The Atlas of Emergency Medicine, 5e AB - The scaphoid is the most common carpal bone fractured. Injuries result from either a fall on an outstretched dorsiflexed hand or an axial load along the thumb’s metacarpal. Misdiagnosis of a scaphoid fracture can result in delayed healing or avascular necrosis due to lack of a direct blood supply to the bone’s proximal portion. Tenderness on anatomic snuffbox palpation is common. Exam of the wrist in ulnar deviation exposes more of the scaphoid to palpation within the snuffbox. Eliciting pain in this area when the patient resists supination or pronation of the hand or pain with axial pressure directed along the thumb’s metacarpal is also suggestive of injury. Negative radiographs do not rule out an occult scaphoid fracture. SN - PB - McGraw-Hill CY - New York, NY Y2 - 2024/03/28 UR - accessemergencymedicine.mhmedical.com/content.aspx?aid=1181041939 ER -