Term
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Definition
Maximum is:
Males: 8mm; Females: 10mm |
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Term
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Definition
| Apex of dens should not exceed line by 3 mm or more |
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
Adult 1 - 3 mm
Children 1 - 5 mm |
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Term
| sagittal diameter of vertebral canal |
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Definition
| Narrowing of the canal (stenosis) may be present when the measurement is <12 mm |
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Term
| retropharyngeal interspace: Measured from anteroinferior body margins of C2, C3 |
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Definition
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Term
| retrotracheal interspace: Measured from anteroinferior body margins of C5, C6, C7 |
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Definition
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Term
| Thoracic Kyphosis Measurement |
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Definition
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Term
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Definition
| Accurate up to 26 degrees –more accurate after 26 degrees. |
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Term
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Definition
| NORMAL RANGE 10-15 degrees |
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Term
SACRAL BASE ANGLE
Aka Fergueson’s angle
aka lumbosacral angle |
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Definition
| NORMAL RANGE 26–57 degrees |
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Term
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Definition
| The line should intersect with the anterior one quarter of the sacrum or the same distance anteriorly. |
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Term
| EINSTEIN’S METHOD FOR SAGITTAL CANAL MEASUREMENT. |
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Definition
| SHOULD NOT BE less than 15 mm. |
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Term
| INTERPEDICULATE DISTANCE: |
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Definition
L1-L4=minimum 21 mm
L5= minimum 23 |
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Term
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Definition
Children 1-5 mm
Adults 2-20 mm |
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Term
| Waldenstrom’s sign / Teardrop distance |
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Definition
| Normal: min 6 mm max 11 mm |
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Term
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Definition
| Acetabular floor should not cross this line and usually lies lateral to it. |
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Term
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Definition
| If line is disrupted and not curved….Femoral neck fracture |
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Term
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Definition
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Definition
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Term
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Definition
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Term
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Definition
Normal: fovea capitus should lie
above or at the level of this line |
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Term
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Definition
This line should intersect the femoral head symmetrically.
If it is asymmetrical, then slippage of the femoral capital
epiphysis should be considered |
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Term
| Acromioclavicular Joint Space |
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Definition
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Term
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Definition
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Term
| Acromiohumeral Joint Space |
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Definition
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Definition
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