BACKGROUND *Equal contributors.Planar bone scintigraphy (PBS) is often advocated for diagnosing occult scaphoid fractures. PBS is a sensitive diagnostic modality, but lacks specificity, which may result in over-diagnosis. PURPOSE To examine, in a pilot study, the potential additional value of single photon emission computed tomography (SPECT) combined with low dose computed tomography (CT) fo...

Scaphoid fractures are common but present unique challenges because of the particular geometry of the fractures and the tenuous vascular pattern of the scaphoid. Delays in diagnosis and inadequate treatment for acute scaphoid fractures can lead to nonunions and subsequent degenerative wrist arthritis. Improvements in diagnosis, surgical treatment, and implant materials have encouraged a trend t...

background: scaphoid mal:union: alters the carpal kinematics and impairs clinical outcome because of pain, weakness, restricted range of motion and predisposing the wrist joint to early osteoarthritis. the aim of this study was to evaluate the influence of the scaphoid morphological angles on clinical outcomes in patients with reconstructed scaphoid by non-vascularized bone graft. methods: seve...

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 %),...

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...