Scaphoid (Subscribe)  

We have investigated whether assessment of blood flow to the proximal scaphoid can be used to predict nonunion in acute fractures of the scaphoid. We studied 32 fractures of the scaphoid one to two weeks after injury, by dynamic fat-suppressed T1-weighted gradient-echo MRI after the intravenous administration of gadopentetate dimeglumine...

We developed and implemented clinical practice guideline (CPG) using computerized tomography (CT) as the initial imaging method in the emergency department management of scaphoid fractures. We hypothesized that this CPG would decrease unnecessary immobilization and lead to earlier return to work.
Conclusion: This CPG resulted in rapid and accurate management of...

Imaging protocols for suspected scaphoid fractures among investigators and hospitals are markedly inconsistent. We performed a systematic review and meta-analysis to assess and compare the diagnostic performance of bone scintigraphy, MRI, and CT for diagnosing suspected scaphoid fractures. Twenty-six studies were included. Sensitivity, specificity, and diagnostic odds ratio were pooled...

Because of the deep position of the scaphoid, scaphoid fracture fixation traditionally requires fairly wide surgical exposure. A variety of volar, dorsal and radial exposures have been described. Wide exposure has the disadvantages of creation of a wide zone of scar tissue as well as possibly disrupting existing circulation...

The purpose of this paper is to retrospectively review 234 consecutive cases of scaphoid fractures and nonunions treated using arthroscopy with the dorsal percutaneous implantation of a headless compression screw for healing and complications.
We conclude that the dorsal percutaneous treatment of scaphoid fractures and nonunions using arthroscopy is safe and...

If neglected or misdiagnosed, non-union of a scaphoid fracture will almost inevitably progress to radiographic and symptomatic osteoarthritis of the wrist with subsequent morbidity and lifelong disability, especially in young males in which the fracture is more common. Fractures of the scaphoid bone are the most common fractures of the...

scaphoid (navicular) fracture Notes and images
rule of 70's
* 70% of wrist fractures
* 70% fracture at waist
* 70% unite (5% --> AVN)

Case presentation and images

The scaphoid is one of the small bones in the wrist. It is the wrist bone that is most likely to break.
Contents - Anatomy Cause Symptoms Diagnosis Treatment Nonunions, Avascular Necrosis, and Arthritis Rehabilitation Research on the Horizon Highly Reputable

Archive Copy: 2004

Scaphoid Kinematics are disrupted in scaphoid fractures as follows:
* After a fracture the proximal pole rotates into extension via triquetral-hamate articulation
* After a fracture the distal pole pulled into flexion by scaphotrapeziotrapezoid articulation
* Reverse manipulations create angulation, which...

Upon completion of this course, the participant will be familiar with:
* the techniques of mini-open, percutaneous fixation for scaphoid fractures
* the techniques for arthroscopic management of scaphoid fractures
* indications and techniques for using volar wedge and distal radius grafts
* the management of scaphoid fractures in athletes

The scaphoid is the most commonly fractured bone in the carpus (ie, wrist), and, frequently, the diagnosis of a scaphoid fracture is delayed. A delay in the diagnosis and treatment of this fracture may alter the prognosis for union and dramatically increase the long-term likelihood of arthritis
Synonyms and related keywords:...

Aim to restore anatomical & mechanical properties (+/- vascularity) of scaphoid to prevent development of chronically painful wrist &/or SNAC arthrosis.
Principles
to acutely fix displaced fractures,
fix & bone graft ununited fractures with correction of any deformity,
to vascularise & fix avascular bones.

Distal scaphoid excision is gaining popularity as a treatment of scaphoid nonunion. It requires the strong radioscaphoid and radioscapholunate ligaments to maintain support of the remaining proximal carpus. In this case, the proximal carpus was destabilized by the effect of radial stylidectomy on these ligaments.