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A ganglion cyst is a fluid-filled bump associated with a joint or tendon sheath. [3] It most often occurs at the back of the wrist, followed by the front of the wrist. [3] [4] The cause is unknown. [3] The underlying mechanism is believed to involve an outpouching of the synovial membrane. [4] Diagnosis is typically based on examination.
It is occupied by the extensors of the digits, the extensor digitorum communis and the extensor indicis proprius. The extensor indicis proprius usually runs and inserts onto the ulnar side of the extensor digitorum communis of the index finger. [4] The fifth compartment is occupied by the extensor digiti minimi, the extensor of the little finger.
It could have up to four tendons with a single tendon inserting to the index or the middle finger being the two most common variations. [7] At the insertion the tendon of the extensor digitorum brevis manus often joins the extensor indicis proprius , [ 3 ] although it also occurs when the extensor indicis proprius is absent.
Digital mucous cyst in left index finger with nail depression: Specialty: Oncology, rheumatology, orthopedic surgery ...
The removal of a ganglion cyst usually requires a ganglionectomy. Such cysts usually form on the hand, foot or wrist and may cause pain or impair body function. Aspiration of the cyst and steroid injections are typically performed first. If they fail, the cyst is excised under local, regional or even general anesthetic.
Ulnar tunnel syndrome is usually caused by a ganglion cyst pressing on the ulnar nerve, other causes include traumas to the wrist and repetitive movements, but often the cause is unknown (idiopathic). [2] Long distance bicycle rides are associated with transient alterations in ulnar nerve function. [3]
The Rodger A. Lawson Stock Index From February 2011 to December 2012, if you bought shares in companies when Rodger A. Lawson joined the board, and sold them when he left, you would have a 29.2 percent return on your investment, compared to a 7.7 percent return from the S&P 500.
Bouchard's nodes are hard, bony outgrowths or gelatinous cysts on the proximal interphalangeal joints (the middle joints of fingers or toes). They are seen in osteoarthritis, where they are caused by the formation of calcific spurs of the articular (joint) cartilage.