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Sagittal Band Injury
 

Author: Tyler Schmitz, DO
Affiliation: Blue Ridge Orthopedics
Senior Editor: William Denq, MD

Clinical Vignette: A 38-year-old female presented with a right hand injury that occurred 1 month ago when she crushed her long finger knuckle in between a sled and the ground while snow sledding. Examination of the 3rd MCP joint demonstrated swelling at the dorsal aspect, pain with flexion, and snapping at the knuckle.

Type of Probe Used: 15-6 MHz Linear Transducer



Unlabeled Short axis view of the proximal aspect of the central band of the extensor tendon at the proximal third MCP joint with long finger in extension.


Labeled short axis view of the proximal aspect of the central band of the extensor tendon at the proximal third MCP joint with long finger in extension.


Unlabeled short axis view of the distal aspect of the central band of the extensor tendon at the third metacarpal head with the long finger in extension.


Labeled short axis view of the distal aspect of the central band of the extensor tendon at the third metacarpal head with the long finger in extension. There is evidence of hypoechoic thickening of the distal part of the radial sagittal band compared to the ulnar sagittal band with the long finger at rest at the location of the metacarpal head.


Unlabeled Short Axis View of the Extensor Tendon at the 3rd MCP Joint in Flexion


Labeled Short Axis View of the Extensor Tendon at the 3rd MCP Joint in Flexion. There is ulnar subluxation of the extensor tendon relative to the metacarpal head with MCP joint flexion.

NOTE: For more information, please contact the AMSSM, 4000 W. 114th Street, Suite 100, Leawood, KS 66211 (913) 327-1415.
 

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