ArticleJBMR plus2025
Ectopic pseudojoints in fibrodysplasia ossificans progressiva.
Article in JBMR plus, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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8 authors.
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Abstract
Pseudoarthroses (false joints) occur as a complication of fracture healing in the normotopic skeleton but have not been reported at ectopic sites. Fibrodysplasia ossificans progressiva (FOP) is an ultra-rare genetic disorder characterized by progressive heterotopic ossification (HO) and congenital skeletal abnormalities including developmental arthropathy in the normotopic skeleton. Here, we report ectopic pseudojoint formation in 6 patients with FOP, all occurring after painful flare-ups and HO in soft connective tissues of the knee, hip, and forearm. To our knowledge, FOP is the only human condition in which ectopic pseudojoint formation occurs. These findings support that dysregulated BMP pathway signaling from mutant ACVR1 mediates not only HO, but also ectopic pseudojoint formation, and that ectopic pseudojoints can arise from de novo musculoskeletal elements.
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