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At the time the article was created Yuranga Weerakkody had no recorded disclosures.View Yuranga Weerakkody's current disclosures
At the time the article was last revised Henry Knipe had the following disclosures:
- Integral Diagnostics, Shareholder (ongoing)
- Micro-X Ltd, Shareholder (ongoing)
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The Gruberi bursa, or the bursa mucosa of Gruberi, is a bursa located in the dorsal region of the ankle that extends from the sinus tarsi and along the frondiform ligament to surround extensor digitorum longus tendons.
Defined as the bursa that lines the inferior extensor retinaculum (frondiform ligament) as it passes over the extensor digitorum longus tendons at the anterior ankle joint. It will only usually only be evident on imaging if distended and can be mistaken for tenosynovitis, thus also referred to as pseudotenosynovitis of the extensor digitorum longus tendons 2.
tenosynovitis of the extensor digitorum longus tendons
on ultrasound, it is most commonly unilocular, anechoic, and compressible 1
a distended bursa of Gruberi will extend from the sinus tarsi and wrap around the tendons, differentiating it from fluid due to tenosynovitis which will extend along the tendon
on MRI there will be usually signal or morphological changes of extensor digitorum longus associated with tenosynovitis
on MRI and ultrasound, the fat surrounding the extensor digitorum longus will be edematous and/or inflamed in tenosynovitis