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Fingers Hand & Wrist

Position

QuestionAnswer
Distal Carpals Trapezium, Trapezoid, Capitate, Hamate
Proximal Carpals Pisiform, Triquetrum, Lunate, Scaphoid/Navicular
Anatomical Snuff Box Overlies the Scaphoid bone **Most frequently fractured carpal bone
AP Thumb Position:Supinated Projection:Ap CR:MCP Joint **Must include the Trapezium
PA Oblique Thumb Position:Hand pronated, Thumb abduct Projection:Pa Oblique CR:MCP Joint
Lateral Thumb Position:Lateral Projection:Mediolateral CR:MCP Joint
PA Fingers 2-5 Position:Prone Projection:PA CR:PIP Joint
PA Oblique Fingers 2-5 Position:External Rotation Projection:PA Oblique CR:PIP Joint
Lateral Fingers 2-5 Position:Lateral Projection:Mediolateral (2-3), Lateromedial (4-5) CR:PIP Joint
PA Fingers 2-5 Images *Concavity of phalangeal shafts *Equal amount of soft tissue on both sides *Fingernail is centered over distal phalanx
Lateral Fingers 2-5 Images *Concave anterior aspect of the phalangeal shaft *Open joints *No overlap of the other digits *Anatomy: head, body, & base
Why keep digits parallel to film? 1.Keep joint spaces open 2.Prevent foreshortening
PA Hand Position:Prone Projection:PA CR:3rd MCP Joint
PA Oblique Hand Position:External Rotation Projection:PA Oblique CR:3rd MCP Joint
Fan Lateral Hand Position:Fan Lateral Projection:Lateromedial CR:2nd MCP Joint
Fan Lateral Image Superimposed metacarpals *See individual phalanges without superimposition
Lateral in Extension Position:Lateral in Extension Projection:Lateromedial CR:2nd MCP Joint
Lateral in Extension Image Superimposed digits, metacarpals, distal forearm *Thumb abducted
Why use a lateral in extension? 1.To localized foreign body 2.Show soft tissue 3.Show metacarpal fx displacements
PA Wrist Position:Prone Projection:Pa CR:Midcarpals
PA Oblique Wrist Position:Lateral Rotation from prone Projection:PA Oblique CR:Midcarpals
Lateral Wrist Position:Lateral Projection:Lateromedial CR:Wrist Joint
AP Oblique Wrist Position:Medial Rotation from supine Projection:AP Oblique CR:Midcarpals
Why do a PA Oblique vs. AP Oblique Wrist? PA Oblique demo scaphoid & trapezoid *carpals on lateral aspect AP Oblique shows the pisiform free from superimposition
Ulnar Deviation Wrist Position:Prone with Ulnar deviation Projection:Pa CR:Scaphoid
Radial Deviation Wrist Position:Prone with Radial deviation Projection:Pa CR:Midcarpals
Ulnar Deviation vs Radial Deviation Ulnar Deviation: carpals on lateral aspect *shows scaphoid with no foreshortening & adjacent joints open Radial Deviation: carpals on medial aspect *Shows the pisiform
Stecher Method Position:Stecher Method Projection:PA Axial CR:Perpendicular or angled 20 degrees toward elbow & enters scaphoid
Why the Stecher Method? shows the scaphoid without foreshortening
Gaynor Hart Method Position:Gaynor Hart Method Projection:Tangential CR:25-30 degrees to long axis of hand, 1" distal to base of 3rd MC
Created by: mandy91lou