Evaluation of the Relationship between Biceps-Glenoid Angle and Subscapularis Tendon Pathologies in the Biceps Long Head Tendon Subluxation with MRI

Year 2018, Volume: 20 Issue: 3, 300 - 305, 30.12.2018

Mehmet Hamdi Şahan Neşe Asal

https://doi.org/10.24938/kutfd.470512

Abstract

Objective: The
aim of this study was to determine the variability of biceps-glenoid angle in
patients with subluxation of the long head of the biceps tendon (LHBT) in
magnetic resonance imaging (MRI) and to evaluate the relationship between
subscapular tendon pathologies.

Material and Method: Shoulder
MRIs taken in Kirikkale University Medical School Radiology Department between
January 2014 and March 2018 were reviewed. Thirty patients with subluxation in
BUBT and 32 control patients without subluxation were compared. In the
T2-weighted oblique-coronal MRI images, the biceps-glenoid angle between the
parallel line drawn to the biceps tendon and the tangent line drawn on the
glenoid bone roof was measured in the cross-section at the level of
supraglenoid tubercle adhesion of BUBT. In addition, subcapularis tendon
pathologies were analyzed for normal, partial and full-thickness tear.

Results: There
were 12 males and 18 females in the subluxation group in BUBT and the mean age
was 61±13.6 years. There were 14 males and 18 females in the non-subluxation
group in BUBT and the mean age was 55.9±14 years. The mean biceps-glenoid angle
was 84.1º±4.9º in the subluxation group and 92.8º±4.7º in the non-subluxation
group, showing a statistically significant difference (p<0.05). Subcapularis
tendon pathology was present in 80%of patients with subluxation in BUBT.

Conclusion: In
patients with subluxation in BUBT, biceps-glenoid angle values are lower than
those with non-subluxation. Biceps-glenoid angle measurement may be helpful in cases
where diagnosis of BUBT subluxation is obscure. In addition, subcapularis
tendon pathologies frequently accompany BUBT subluxation.

Keywords

Biceps, subluxation, magnetic resonance imaging, rotator cuff

BİSEPS UZUN BAŞI TENDON SUBLUKSASYONUNDA BİSEPS-GLENOİD AÇISI VE SUBSKAPULARİS TENDON PATOLOJİLERİ ARASINDAKİ İLİŞKİNİN MRG İLE DEĞERLENDİRİLMESİ

Abstract

Amaç: Manyetik rezonans
görüntülemede (MRG) biseps uzun başı tendonunda (BUBT) subluksasyon tespit
edilen olgularda biseps-glenoid açısındaki değişkenliklerin tespiti ve
subskapularis tendon patolojileri ile ilişkisinin değerlendirilmesi amaçlandı.

Gereç ve Yöntem: Ocak 2014-Mart
2018 tarihleri arasında Kırıkkale Üniversitesi Tıp Fakültesi Radyoloji Anabilim
Dalı’nda çekilen omuz manyetik rezonans görüntüleri incelendi. BUBT’da
subluksasyon olan 30 hasta ve subluksasyon olmayan 32 kontrol hastası
karşılaştırıldı. T2 ağırlıklı oblik-koronal MRG görüntülerde, BUBT’un
supraglenoid tuberküle yapışma düzeyinden geçen kesitte, biseps tendonuna
çizilen paralel çizgi ile glenoid kemik çatıya çizilen teğet çizgi arasındaki
biseps glenoid açısı ölçüldü. Ayrıca subskapularis tendon patolojileri normal,
parsiyel ve tam kat yırtık açısından analiz edildi. 

Bulgular: BUBT’da
subluksasyon olan grupta 12 erkek, 18 kadın olup yaş ortalaması
61.0±13.6 yıl idi. BUBT’da subluksasyon olmayan grupta 14 erkek, 18 kadın
olup yaş ortalaması 55.9±14.0 yıl idi. Subluksasyon olan grupta biseps-glenoid
açı ortalaması 84.1º±4.9º ve subluksasyon olmayan grupta 92.8º±4.7º idi
(p<0.05). BUBT’da subluksasyon olan olguların da %80’inde subskapularis
tendon patolojisi mevcuttu.

Sonuç: BUBT’da
subluksasyon olan hastalarda, biseps-glenoid açı değerleri, subluksasyon
olmayanlara göre düşüktür. BUBT subluksasyonu tanısında arada kalınan olgularda
biseps-glenoid açı ölçümü yardımcı olabilir. Ayrıca BUBT subluksasyonuna,
subskapularis tendon patolojileri sıklıkla eşlik etmektedir.

Keywords

Biseps, subluksasyon, manyetik rezonans görüntüleme, rotator manşet

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