Sarman, HakanIşık, CengizBoz, MehmetBoyraz, İsmailKoç, BünyaminTürkoğlu, Şule Aydın2021-06-232021-06-2320161413-78521809-4406https://doi.org/10.1590/1413-785220162404156646https://hdl.handle.net/20.500.12491/8758Objective: The aim of this study was to investigate whether haemogram parameters are predictive factors for both the severity of the disease and a decision in favor of surgical treatment in patients with an established diagnosis of cubital tunnel syndrome (CuTS). Methods: The medical files of patients with a diagnosis of CuTS who were followed-up conservatively (n=92) or surgically treated (n=92) were retrospectively screened and the haemogram parameters were recorded. Results: The receiver operating characteristic (ROC) curve analysis revealed an area of 0.665 under the curve, with 76.3% sensitivity and 84.8% specificity at the cut-off of a red cell distribution width (RDW) level grater than 15.45%. RDW levels higher than 15.5%, electromyography (EMG) severity, and a clinical score higher than three were found to be independently associated with surgery. Conclusion: An elevated RDW value was related to the severity of the electromyogram. RDW may, therefore, be a useful independent predictor for the decision to surgical treatment of CuTS.eninfo:eu-repo/semantics/openAccessCubital Tunnel Syndrome/DiagnosisCubital Tunnel Syndrome/EtiologyCubital Tunnel Syndrome/SurgeryCubital Tunnel Syndrome/BloodArticle10.1590/1413-785220162404156646244187190282431712-s2.0-84984924021Q3WOS:000384755700003Q4