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Carpometacarpal bossing (or metacarpal/carpal bossing) is a small, immovable mass of bone on the back of the wrist. The mass occurs in one of the joints between the carpus and metacarpus of the hand , called the carpometacarpal joints , where a small immovable protuberance [ 1 ] occurs when this joint becomes swollen or bossed.
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 ]
Exostoses are sometimes shaped like spurs, such as calcaneal spurs. Osteomyelitis , a bone infection, may leave the adjacent bone with exostosis formation. Charcot foot , the neuropathic breakdown of the feet seen primarily in diabetics , can also leave bone spurs that may then become symptomatic.
Surgical extraction of osteochondromas is sometimes beneficial. Shown is an osteochondroma surgically extracted from a ten-year-old patient. The bone is the cylindrical stalk at the bottom, about 1/2 inch long, the two diagonal growths are cartilage. This morphology is typical of a tibial bone spur.
Osteophyte formation has classically been related to sequential and consequential changes in such processes. Often osteophytes form in osteoarthritic joints as a result of damage and wear from inflammation. Calcification and new bone formation can also occur in response to mechanical damage in joints. [5]
In some cases of osteochondrosis, such as Sever's disease and Freiberg's infraction, the involved bone may heal in a relatively normal shape and leave the patient asymptomatic. [11] On the contrary, Legg-Calvé-Perthes disease frequently results in a deformed femoral head that leads to arthritis and the need for joint replacement .
Enchondroma is a type of benign bone tumor belonging to the group of cartilage tumors. [1] [2] There may be no symptoms, [3] or it may present typically in the short tubular bones of the hands with a swelling, pain or pathological fracture.
Ganglion cyst is associated with minimal and specific pain, such as with forceful hyperextension (push up maneuver) or a dorsal wrist ganglion (fluid-filled closed sac with a joint or tendon sheath in the wrist) Kienbock's disease (breakdown of the lunate bone) Tendinopathy in the wrist (extensor) or thumb (De Quervain syndrome) Inflammatory ...