EVALUATION OF THE EFFECT OF THE ANCONEUS EPITROCHLEARIS MUSCLE ON THE ULNAR NERVE IN HEALTHY SUBJECTS WITH ELBOW MAGNETIC RESONANCE IMAGING

Abstract

Objective: To determine the effect of anconeus epitrochlearis muscle on the ulnar nerve area and signal intensity in patients without cubital tunnel syndrome by magnetic resonance imaging. Material and Methods: The elbow magnetic resonance images between January 2020 and December 2022 were evaluated retrospectively. Twenty patients with anconeus epitrochlearis muscle who were clinically and electromyographically shown not to have cubital tunnel syndrome were included in the study. The control group consisted of 20 age, gender and side-matched elbow magnetic resonance images without bone, ligament, and tendon pathology. The ulnar nerve area and intensity, anconeus epitrochlearis muscle area were measured in the axial slice where the anconeus epitrochlearis muscle area was the largest and the findings were statistically compared with the control group. Results: The mean age in the anconeus epitrochlearis muscle group was 42.1±14.1 years (20-68 years). No significant difference in ulnar nerve area between the groups with and without anconeus epitrochlearis muscle was observed (Anconeus epitrochlearis group:10.3±3.4 mm2, control:9.4±2.7 mm2 p=0.376). There was no correlation between the ulnar nerve area and the anconeus epitrochlearis muscle area (r=-0.026, p=0.912). No significant difference in ulnar nerve signal intensity between the two groups was noted (p=0.317). Conclusion: The anconeus epitrochlearis muscle had not a significant effect on the ulnar nerve area and intensity.

Keywords

• Elbow
• magnetic resonance imaging
• muscles
• ulnar nerve

Sağlıklı Bireylerde Anconeus Epitrochlearis Kasının Ulnar Sinire Etkisinin Dirsek Manyetik Rezonans Görüntüleme ile Değerlendirilmesi

Abstract

Amaç: Kubital tünel sendromu olmayan hastalarda anconeus epitrochlearis kasının ulnar sinir alanı ve sinyal yoğunluğuna etkisini manyetik rezonans görüntüleme ile belirlemek. Gereç ve Yöntemler: Ocak 2020 ile Aralık 2022 tarihleri arasında dirsek manyetik rezonans görüntüleme yapılan hastalar retrospektif olarak değerlendirildi. Anconeus epitrochlearis kası olan, klinik ve elektromiyografi ile kubital tünel sendromu olmadığı gösterilen, 20 hasta çalışmaya dahil edildi. Yaş, cinsiyet ve taraf eşleştirmeli, kemik, bağ ve tendon patolojisi olmayan 20 dirsek manyetik rezonans görüntülemesi ile kontrol grubu oluşturuldu. Anconeus epitrochlearis kas alanının en geniş olduğu aksiyal kesitte ulnar sinir alanı ve intensitesi, anconeus epitrochlearis kas alanı ölçüldü ve bulgular istatistiksel olarak kontrol grubu ile karşılaştırıldı. Bulgular: Anconeus epitrochlearis kas grubundaki hastaların yaş ortalaması 42.1±14.1 yıl (20-68 yıl) idi. Anconeus epitrochlearis kası olan ve olmayan grup arasında ulnar sinir alanı açısından istatistiksel olarak anlamlı fark saptanmadı (Anconeus epitrochlearis grubu:10.3±3.4 mm2, kontrol:9.4±2.7 mm2 p=0.376). Anconeus epitrochlearis kas alanı ile ulnar sinir alanı arasında korelasyon yoktu (r=-0.026, p=0.912). Ulnar sinir sinyal intensitesinde, iki grup karşılaştırıldığında anlamlı fark saptanmadı (p=0.317). Sonuç: Anconeus epitrochlearis kasının ulnar sinir alanı ve intensitesi üzerinde etkisi yoktur.

Keywords

• Dirsek
• manyetik rezonans görüntüleme
• kaslar
• ulnar sinir

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