The management of recalcitrant nonunion of the scaphoid can be frustrating. Recent understanding of the vascular anatomy of the distal radius has helped in the management of these problems. Vascularized bone grafting for scaphoid nonunion has improved the union rates. Consequently, familiarity with this procedure is an important tool for any surgeon who treats scaphoid nonunion. Although there ...

Scaphoid, the boat-shaped carpal bone, is largely covered by articular cartilage. It has a much more complex arterial supply than previously reported, moreover, this pattern been hypothesized to lead avascular necrosis after fracturesScaphoid blood long documented as scarce; it arises from radial artery giving palmar and dorsal branches. There high-grade evidence reporting two main arteries ent...

Up to 30 % of acute scaphoid fractures are missed in conventional radiography. CT and MRI should be early performed in the diagnostic workflow, when radiograms (dorsopalmar, lateral and Stecher's views) are negative or inconclusive in fracture detection. Significance of CT is different from that of MRI: Sensitivity of CT imaging (85 to 95 %) is superior to conventional radiography (about 70 %),...

The scaphoid is the most commonly fractured carpal bone, with frequent complications that are predisposed by its anatomical location, anatomical configuration (shape and length), and vascular supply. The most common mechanism of injury is a fall onto an outstretched hand. Imaging plays a significant role in the initial evaluation and treatment of scaphoid fractures and their complications. Radi...

Fractures of the carpal scaphoid in children show some quite remarkable differences with respect to fractures of the carpal scaphoid in adults. A review of the literature shows that fractures in children are more often located in the distal third, are more often incomplete and are usually not displaced. Our experience with 23 fresh fractures of the carpal scaphoid in children confirms these fin...

Scaphoid nonunion is a common but difficult problem for hand surgeons. The diagnosis of scaphoid nonunion is often delayed, and therefore, treatment must be tailored to the type of fracture, the duration of nonunion, and the presence or absence of resulting arthritis. This article reviews the diagnosis and work-up of scaphoid nonunion, classification schemes for scaphoid nonunion, and various t...

Division of Orthopedic Surgery, Department of Surgery, Far Eastern Memorial Hospital; and Department of Orthopedic Surgery, National Taiwan University Hospital, Taipei. Received: 28 October 1999. Revised: 26 November 1999. Accepted: 1 February 2000. Reprint requests and correspondence to: Dr. Sheng-Mou Hou, Department of Orthopedic Surgery, National Taiwan University Hospital, 7 Chung-Shan Sout...

Carpal kinematics have been previously limited to in vitro models with cadaveric specimens. Using a newly developed markerless bone registration algorithm, we noninvasively studied the in vivo kinematics of the capitate, scaphoid, and lunate during wrist extension and flexion in both wrists of 5 men and 5 women. Computed tomography volume images were acquired in neutral and in 2 positions in bo...

Background. Pseudoarthrosis of the scaphoid results in the development of carpal instability and severe posttraumatic osteoarthritis. Modern methods of treatment focus on reconstruction of the anatomical shape and length of the scaphoid. The purpose of our study was to determine the occurrence of carpal osteoarthritis after surgical treatment of scaphoid pseudoarthrosis using a cortico-cancello...

Scaphoid fractures are generally known to be difficult to diagnose and difficult to heal. In some reports, up to 40% of scaphoid fractures were reported to be missed at initial presentation. Clinical examinations and plain radiographs are generally poor at identifying scaphoid fractures immediately after injury. In this study we report a scaphoid fracture that has no difficulty in diagnosis bec...