Case Report
Copyright ©The Author(s) 2023.
World J Clin Cases. Dec 6, 2023; 11(34): 8228-8234
Published online Dec 6, 2023. doi: 10.12998/wjcc.v11.i34.8228
Figure 1
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Figure 1 Pre-operative axial T2-weighted magnetic resonance image shows the high signal change and swelling of the ulnar nerve. A: Rt. Elbow; B: Lt. Elbow. Arrow: Ulnar nerve, ME: Medial epicondyle.
Figure 2
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Figure 2 Pre-operative transverse dynamic ultrasonography of the patient. A: In extension of the elbow, the ulnar nerve and medial head of the triceps are located posterior to the medial epicondyle; B: With flexion of the elbow by 100 degrees, the ulnar nerve and medial head of the triceps are dislocated anteriorly over the medial epicondyle. ME: Medial epicondyle, dotted circle: Ulnar nerve, dashed circle: Medial head of the triceps.
Figure 3
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Figure 3 Clinical photo of the left elbow. With flexion of the elbow by 90 degrees, the medial head of the triceps is dislocated anteriorly over the medial epicondyle. Arrow: ulnar nerve, ME: Medial epicondyle.
Figure 4
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Figure 4 Clinical photo after anterior transposition of the ulnar nerve. A: With flexion of the elbow by 80 degrees, the medial head of the triceps is located posterior to the medial epicondyle; B: With flexion of the elbow by 100 degrees, the medial head of the triceps is dislocated anteriorly over the medial epicondyle; C: Medial head of the triceps, located over the medial epicondyle, was resected. ME: Medial epicondyle, dashed circle: Dislocated medial head of the triceps.
Figure 5
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Figure 5 Clinical photo of the right elbow. With flexion of the elbow by 90 degrees, the medial head of the triceps is dislocated anteriorly over the medial epicondyle. Arrow: Ulnar nerve, ME: Medial epicondyle.
Figure 6
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Figure 6 Clinical photo after anterior transposition of the ulnar nerve. A: With flexion of the elbow by 100 degrees, the medial head of the triceps is dislocated anteriorly over the medial epicondyle; B: Medial head of the triceps, located over the medial epicondyle, was resected; C: After resection, it was confirmed that flexion of the elbow did not cause any dislocation of the triceps with flexion of the elbow by 100 degrees. ME: Medial epicondyle, dashed circle: Dislocated medial head of the triceps.