Table 2: CSA of the ulnar nerve at the elbow in different UNE severity groups.

VariableMild ( 𝑛 = 1 3 )Moderate ( 𝑛 = 8 )Severe ( 𝑛 = 8 )P value

CSA-prox (mm2)5 (4–6)6.5 (5.25–8.5)6 (5.25–9.75)0.03
CSA-epi (mm2)6 (4.5–7.5)6.5 (5.25–10)13 (7.5–15.75)0.04
CSA-dist (mm2)4 (3–6)5.5 (4.25–6.75)9 (5–10.5)0.01
CSA-max (mm2)7 (6–9)10 (7–14.37)13.5 (10.5–16)0.003

UNE: ulnar neuropathy at the elbow; CSA: cross-sectional area; prox: proximal; epi: epicondyle; dist: distal; max: maximum.