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Upper extremities MT
Positioning
Question | Answer |
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What is the patient position for thumb,fingers, wrist, hand, forearm and elbow. | Seated at the end of the table with their effected side closest to the table; elbow flexed and arm resting on table. Arm may be extended for AP thumb |
What is the patient position for humerus, shoulder, scapula, clavicle and AC joints? | Patient is erect with back touching IR or supine on the table. |
What is the part position for a PA hand? | Hand open, fingers extended with palmer surface in contact with IR. Fingers moderately separated |
What is the part position for a PA Obliue hand? | From PA position the hand is rotated laterally rotated to place the anteromedial aspect in contact with IR |
What is the part position for a lateral hand? | Ulnar aspect of hand is contact with IR with coronal plane of hand perpendicular to IR, thumb is positioned as for a PA thumb. Digits 2-5 are straight |
What is the part position for a lateral fan hand? | Ulnar aspect of hand is contact with IR with coronal plane of hand perpendicular to IR, thumb is positioned as for a PA thumb. Digits 2-5 are spread out to prevent superimposition |
What is the CR for a PA hand and PA oblique hand? | perpendicular to third MCP joint |
What is the CR for a lateral hand and fan lateral | perpendicular to second MCP joint |
What structures are seen in PA hand radiograph? | Entire hand (including fingertips), carpus and most distal aspects of radius and ulna |
What structures are seen in PA oblique hand radiograph? | No or minimal overlay of metacarpalshafts with some superimposition of metacarpal heads and bases |
What structures are seen in a lateral hand radiograph? | Superimposition of second through fifth phalanges (fan lateral - phalanges individually demonstrated. Thumb is seen in PA projection |
What is the part position for an AP thumb? | Patient leans forward arm abducted 90 degreeswith forearm internally rotated into an exaggerated degree of pronation. Dorsal surface of thumb is in contact with IR. Plane of palm of hand is perpendicular to IR. |
What is the part position for an PA oblique thumb? | Palmar surface of hand is in contact with IR as for PA Projection of hand. Coronalplane of thumb will be 45-degrees to plane of IR. |
What is the part position for a lateral thumb? | Beginning with hand positioned for PA Oblique thumb, patient flexes MCP joints 2-5 with the with the fingers extended "tenting" hand until thumb is lateral. |
What is the part position for a PA finger? | Hand is open with palmar surface in contact with IR. Fingers are moderately separated. |
What is the part position for a PA oblique finger? | From the PA, hand is rotated lsyrtsl to place the anteromedial (palmar/ulnar) surface in contact with IR. Coronal plane of fingers at 45-degree angle to IR |
What is the part position for a lateral finger? | Medial or lateral surface of hand may be in contact with IR, depending on which brings finger of interest nearest IR. Finger of interest is free of superimposition of other fingers. |
What is the CR for a PA finger? | perpendicular to IP joint |
What is the CR for a PA oblique finger? | perpendicular to IP joint |
What is the CR for a lateral finger? | perpendicular to IP joint |
What is the CR for an AP thumb? | perpendicular to first MCP joint. |
What is the CR for a PA oblique thumb? | perpendicular to first MCP joint. |
What is the CR for a lateral thumb? | perpendicular to first MCP joint. |
What structures are seen in AP thumb? | Entire thumb and first metacarpal with all joint spaces open and clearly visualized. |
What structures are seen in PA oblique thumb? | Entire thumb and first metacarpal with all joint spaces open and clearly visualized. |
What structures are seen in a lateral thumb? | Entire thumb and first metacarpal with all joint spaces open and clearly visualized. |