Ultrasound: Tendons: Difference between revisions
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==Images== | ==Images== | ||
===Normal=== | |||
<gallery> | |||
File:Intact tendon.png|Normal tendon | |||
File:Tendon anisotrophy on left of screen.png|Tendon anisotrophy on left of image | |||
</gallery> | |||
===Abnormal=== | |||
<gallery> | |||
File:Tendon Rupture 2.png|Tendon Rupture | |||
File:Tendon Rupture.png|Tendon Rupture | |||
</gallery> | |||
==Instructions== | |||
#Use linear probe (high frequency probe) | |||
#Place probe in longitudinal plane over suspect tendon; high yield locations inlcude: | |||
#*Biceps can be proximal or distal | |||
#*Patella tendons 2cm from insertion on patella | |||
#*Achilles 2-6cm above calcaneus | |||
#Fan and slide side to side to optimize your view | |||
#Slide distal to proximal to find defect | |||
#Turn probe 90° to assess for tendon body defects | |||
== | ==Findings== | ||
*Positive Findings | |||
**Discontinuity in longitudinal view of ligament | |||
**Collection of fluid in longitudinal or transverse view suggests injury | |||
*Negative Findings | |||
**Longitudinal views show continuous densely striped parallel lines | |||
**Transverse views show oval structure with punctate interior | |||
==Pearls and Pitfalls== | |||
*Look at other limb for "normal" anatomy | |||
*Have patient range limb and view in real time | |||
*Know your limitations if case is not clear cut | |||
*Do not mistake [https://radiopaedia.org/articles/anisotropy anisotropy] for tendon rupture | |||
==See Also== | ==See Also== | ||
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==External Links== | ==External Links== | ||
== | ==References== | ||
<references/> | <references/> | ||
[[Category: | [[Category:Radiology]] | ||
[[Category: | [[Category:Orthopedics]] | ||
Latest revision as of 21:16, 19 April 2017
Background
- U/S can be used to assess continuity of tendons and ligaments
- They have a property called anisotropy which means they have 2 different appearances if assess longitudinally or transversely
Images
Normal
Normal tendon
Tendon anisotrophy on left of image
Abnormal
Tendon Rupture
Tendon Rupture
Instructions
- Use linear probe (high frequency probe)
- Place probe in longitudinal plane over suspect tendon; high yield locations inlcude:
- Biceps can be proximal or distal
- Patella tendons 2cm from insertion on patella
- Achilles 2-6cm above calcaneus
- Fan and slide side to side to optimize your view
- Slide distal to proximal to find defect
- Turn probe 90° to assess for tendon body defects
Findings
- Positive Findings
- Discontinuity in longitudinal view of ligament
- Collection of fluid in longitudinal or transverse view suggests injury
- Negative Findings
- Longitudinal views show continuous densely striped parallel lines
- Transverse views show oval structure with punctate interior
Pearls and Pitfalls
- Look at other limb for "normal" anatomy
- Have patient range limb and view in real time
- Know your limitations if case is not clear cut
- Do not mistake anisotropy for tendon rupture