title: Erosion of the triquetrum and pisiform bones caused by a foreign body granuloma.
abstract: A 16-year-old boy had pain and swelling in the left wrist 6 months after he had fallen on a twig. Erosion of the triquetrum and pisiform was seen on x-ray films. A granulomatous process was identified at operation. Despite numerous cultures and special stains, no organisms were identified. Wood debris was seen under high-power magnification. A wooden foreign body may cause bone and joint destruction through a granulomatous process. In this case, surgical debridement and excision stopped the destructive process.
mesh_terms: D000293:Adolescent; D001847:Bone Diseases / Q000209:etiology* / Q000473:pathology / Q000601:surgery; D002348:Carpal Bones / Q000473:pathology / Q000601:surgery; D005547:Foreign Bodies / Q000150:complications* / Q000601:surgery; D006099:Granuloma / Q000150:complications* / Q000473:pathology; D006801:Humans; D008297:Male; D014955:Wrist Joint / Q000601:surgery