What is the role of carpal tunnel syndrome in the etiology of trigger finger (TF)?

Updated: Apr 26, 2021
  • Author: Satishchandra Kale, MD, MBBS, MBA, MCh(Orth), FRCS(Edin), FRCS(Tr&Orth); Chief Editor: Harris Gellman, MD  more...
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Answer

The association of idiopathic TF with idiopathic carpal tunnel syndrome has long been suggested. A study of 551 patients with no predisposing causes diagnosed with either TF, carpal tunnel syndrome, or both based on clinical grounds reported that 43% of patients with TF also had concomitant carpal tunnel syndrome; this is significantly higher than the population prevalence of carpal tunnel syndrome, which is about 4%. [22]

A retrospective study by Grandizio et al indicated that the risk of developing TF following surgical carpal tunnel release is greater in patients with DM than in those without DM. In the study, the investigators found that out of 1003 carpal tunnel releases in patients without DM, the incidence of TF at 6 and 12 months was 3% and 4%, respectively, whereas out of 214 carpal tunnel releases in patients with DM, the incidence at 6 and 12 months was 8% and 10%, respectively. The severity of the DM, however, was not found to be a significant factor in the development of TF. [23]


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