Diagnostic Value of Ultrasonography and Magnetic Resonance Imaging in Ulnar Neuropathy at the Elbow

Table 1

Baseline characteristics and CSA of the ulnar nerve at the elbow in the patients and controls.

Variable	Patients	Controls	P value
Age (years)	48.6±13.5	42.1±12.9	0.62
Gender (male : female)	16 : 9	15 : 8	0.85
Number of patients/examined elbows	25/29	23/35	—
Side affected: 𝑛 (%)			NA
Right	10 (40%)	—
Left	11 (44%)	—
Bilateral	4 (16%)	—
UNE severity: n (%)			NA
Mild	13 (44.8%)	—
Moderate	8 (27.6%)	—
Severe	8 (27.6%)	—
CSA-prox (mm^2)	6 (5–7)	4 (4-5)	<0.001
CSA-epi (mm^2)	7 (5–12)	4 (3–5)	<0.001
CSA-dist (mm^2)	5 (4–7)	4 (3–5)	<0.001
CSA-max (mm^2)	9 (6.6–13.5)	5 (4–6)	<0.001

UNE: ulnar neuropathy at the elbow; CSA: cross-sectional area; prox: proximal; epi: epicondyle; dist: distal; max: maximum; NA: not available.