Matias De Albert, Presenter: Nothing to Disclose

Jose A. Narvaez, Abstract Co-Author: Nothing to Disclose

Silvia Lopez MD, Abstract Co-Author: Nothing to Disclose

Pablo Vera MD, Abstract Co-Author: Nothing to Disclose

Javier Hernandez Gañan, Abstract Co-Author: Nothing to Disclose

Federico Portabella MD, Abstract Co-Author: Nothing to Disclose

To: 1. Present a comprehensive review of the pathogenesis, classification and imaging findings of SNAC wrist. 2. Describe the imaging key points required for an optimal management expressed in the language used by hand surgeons to improve radiological reports. 3. Illustrate the most common surgical procedures and their radiological appearance.

1.Scaphoid region anatomy/ fracture patterns. 2.MDCT findings Scaphoid non-union.Scaphoid necrosis. SNAC classification. 3.Key points Proximal pole necrosis. Scaphoid humpback deformity and scaphoid length. Dorsal Intercalated Segment Instability (DISI).Capitate head status. Radio-scaphoid, luno-capitate or scapho-capitate impingement 4.Surgical procedures  Screw Fixation. Styloidectomy. Scaphoidectomy  and four corner fusion. Capitolunate arthrodesis. Proximal row carpectomy Wrist fusion.

The imaging of SNAC wrist and its classification is focused on periscaphoid osteoarthritic changes, which can better assessed using MDCT. It is important to recognize and to reflect appropriately in the radiological reports a) some associated entities such as DISI and proximal scaphoid necrosis and b) other MDCT findings (humpback deformity, scaphoid length, etc.) since they have an important prognosis significance and help to design which should be surgical approach.  

De Albert, M, Narvaez, J, Lopez, S, Vera, P, Hernandez Gañan, J, Portabella, F, MDCT in SNAC (Scaphoid Nonunion Advanced Collapse) Wrist: What the Orthopedic Surgeon Wants to Know.  Radiological Society of North America 2011 Scientific Assembly and Annual Meeting, November 26 - December 2, 2011 ,Chicago IL. http://archive.rsna.org/2011/11011930.html