title: "Swan neck" deformity following carpal spasm in a patient with benign hypermobile joint syndrome.
abstract: In a patient with benign hypermobile joint syndrome and normocalcemic tetany, an episode of carpal spasm caused the appearance of "swan neck" deformity in the fingers of the left hand.
mesh_terms: D000328:Adult; D005260:Female; D005385:Fingers; D006227:Hand Deformities, Acquired / Q000209:etiology*; D006801:Humans; D007593:Joint Instability / Q000150:complications*; D009468:Neuromuscular Diseases / Q000150:complications; D013035:Spasm / Q000150:complications*