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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 ]
[5] [5]: 361 Localized/nodular TGCT (L-TGCT), sometimes referred to as “giant cell tumor of the tendon sheath”; [3]: 100 is a common tumor that presents as a slow-growing, encapsulated, localized and limited bump, most frequently in the fingers. [6] Diffuse TGCT is also called pigmented villonodular synovitis (PVNS).
727.4 Ganglion and cyst of synovium, tendon, and bursa. 727.42 Ganglion, tendon sheath; 727.43 Ganglion, unspec. ... 736.2 Other acquired deformities of 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.
Infectious tenosynovitis is the infection of closed synovial sheaths in the flexor tendons of the fingers. It is usually caused by trauma, but bacteria can spread from other sites of the body. Although tenosynovitis usually affects the flexor tendon of the fingers, the disease can also affect the extensor tendons occasionally. [5]
People with diabetes might be relatively prone to trigger finger. [3] The pathophysiology is enlargement of the flexor tendon and the A1 pulley of the tendon sheath. [3] [2] While often referred to as a type of stenosing tenosynovitis (which implies inflammation) the pathology is mucoid degeneration. [3]
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 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.
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