Periarticular calcific deposits mimicking acute arthritis.

Acute Calcific Tendinosis of the Flexor Hallucis Brevis

“…Of these 28 reported cases, 22 were women (79%). [2][3][4][7][8][9][12][13][14]21,22,24,25,[27][28][29] The female predominance may be explained by footwear, but underdiagnosis in men who may have been presumptively diagnosed with gout may play a role. 8,9,12,13,22 Clinically, symptoms of acute calcific tendinosis can include severe pain, swelling, erythema, and decreased range of motion, 3,4,7-9,12-14,22,24,29 all of which are nonspecific.…”

“…In the rheumatology literature, the term hydroxyapatite pseudopodagra has been used because the clinical symptoms can mimic gout. A literature search for the variable terms used to describe this entity (also calcifying tendinitis, calcific periarthritis, peritendinitis calcarea, and periarthritis calcarea 24 ) revealed only a few case reports [2][3][4]7,9,[12][13][14]21,22,24,25,27,29 and a few small case series 8,28 describing forefoot calcific tendinosis. There has been only one case report of forefoot calcific tendinosis reported in the foot and ankle orthopedic literature, and it involved the adductor hallucis tendon.…”

Acute calcific periarthritis at the metatarsophalangeal joint - a case report

“…It's an inflammatory, self-limiting, monoarticular, periarticular process of dystrophic mineral deposition (1) . It is more common in the shoulder but can also involve the hip, knee, ankle, foot, elbow, wrist, and fingers (2)(3)(4) . Even though the true origin of this condition is unknown, a history of trauma, repeated stress, or strenuous use due to footwear are to blame for onethird of the patients, and it affects both genders equally, with a mean age of 45 years (5,6) .…”

Acute calcific periarthritis—a commonly misdiagnosed pathology

“…The majority of cases involve the shoulder [2,3]. Less commonly, there may be involvement of the hip, knee, ankle, foot, elbow, wrist and fingers [1,[3][4][5]. As the name suggests, mineral deposition is most prevalent in a periarticular location; however, deposits within a bursa, at tendon insertions or at fascial attachments distant to the joint may also occur [6].…”

“…Acute calcific periarthritis affects both males and females over a broad age range, with an average age of 45 years [7]. Some authors note that ACP involving distal articulations (elbow, wrist, hand and great toe) demonstrates a higher proportion of pre-and perimenopausal women [5,[9][10][11].…”