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Clin Shoulder Elbow > Volume 15(2); 2012 > Article
Clinics in Shoulder and Elbow 2012;15(2):109-116.
DOI:    Published online December 31, 2012.
Ultrasonographic Findings and Usefulness in Ulnar Neuropathy at the Elbow
Dong Hu Kim, Chul Hyun Cho, Kyung Rak Lee
Department of Orthopedic Surgery, School of Medicine, Dongsan Medical Center, Keimyung University, Daegu, Korea.
주관절부 척골 신경병증에서의 초음파 소견 및 유용성
계명대학교 의과대학 동산의료원 정형외과학교실
The aim of this study was to evaluate preoperative ultrasonographic findings and usefulness in ulnar neuropathy around elbow. MATERIALS AND METHODS: Twenty-two patients with ulnar neuropathy were performed preoperative ultrasonogram. The route, location, thickness of the ulnar nerve and space occupying lesion through longitudinal scan were evaluated. Cross-sectional areas of the ulnar nerve were measured at the level of medial epicondyle and 3 cm proximal and distal to the medial epicondyle through axial scan. Correlations between swelling ratio of ulnar nerve and eletrophysiologic study and preoperative Dellon's assessment were checked.
In 21 cases (95.6%) of total 22 cases, diffuse swelling of the ulnar nerve around elbow were identified. 4 cases had space occupying lesions including 3 ganglionic cysts and 1 heterotopic ossification. Cross sectional areas at the level of medial epicondyle were significantly larger than at the level of 3 cm proximal and distal to the medial epicondyle (p<0.05). There were no statistically significant correlations between swelling ratio of ulnar nerve and eletrophysiologic study and preoperative clinical assessment (p>0.05).
This study showed that ultrasonography was helpful to detect etiology of ulnar neuropathy around elbow such as space occupying lesion, morphological change or dislocation of ulnar nerve. It could be useful tool for diagnosis and treatment in patients with ulnar neuropathy at elbow.
Key Words: Elbow; Ulnar nerve; Ultrasonography
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