Chronic tenosynovitis caused by Actinobacillus actinomycetemcomitans. 
This is the first report of a patient with a history of painless chronic flexor tenosynovitis caused by Actinobacillus actinomycetemcomitans.  The slow growth of the organism on culture makes early identification difficult.  Flexor tenosynovitis along with proper antibiotic treatment resulted in complete resolution in this patient.