MRI Evaluation Of Rotator Cuff Tear Patterns , Abnormalities Of Biceps Tendon, Bursae And Glenoid Labrum In Os Acromiale Cases

Abstract

Amaç: Literatürde, os akromiyale ile rotator manşet patolojisi arasındaki ilişki; yayınlanmış birçok çalışmadaki yetersiz metodlara bağlı henüz tanımlanmamıştır. Bu çalışmanın amacı, os akromiyale olgularında; rotator manşet yırtık tiplerini, biseps tendonu, bursa ve glenoid labrum patolojilerini MRG ile değerlendirmektir.
Gereç ve Yöntem: Os akromiyalesi olan, yaşı 24 ve üzerinde toplam 43 olgu çalışmaya dahil edildi. Olgulara
ait omuz MR incelemeleri; rotator manşet tendon yırtık tipleri, biseps tendonu, bursalar ve glenoid labrum
patolojileri yönünden değerlendirildi.
Bulgular: Os akromiyale sıklığı %2,6 bulundu. Olguların %81,4’ünü bayanlar oluşturdu. Rotator manşet yırtığı 38 (%88,3) hastada tanımlandı. Supraspinatus tendonunun parsiyel kat yırtığı 31 (%72) hastada mevcuttu.
Parsiyel kat yırtıklar, 22 (%70) hastada rim-rent şeklinde idi. Supraspinatus tendonunun tam kat yırtığı sadece
yedi (%16) hastada mevcuttu. Subakromiyal ve subkorakoid bursit, sırasıyla 31 (%72) ve 14 (%32) hastada
tanımlandı. Biseps tendon patolojisi üç (%7) hastada, labral patoloji ise sadece bir (%2) hastada izlendi.
Sonuç: Os akromiyale olgularında, rotator manşet yırtıklarının görülme oranı artmıştır. Çoğu rotator manşet
yırtığı supraspinatus tendonu ile ilişkili bulunmuştur ve en sık yırtık tipi parsiyel kat şeklindedir. Biseps tendonu ve glenoid labrum ile ilişkili patolojilerin görülme oranında artış saptanmamıştır.

Keywords

• Manyetik rezonans görüntüleme
• os akromiyale
• rotator manşet

MRI Evaluation Of Rotator Cuff Tear Patterns , Abnormalities Of Biceps Tendon, Bursae And Glenoid Labrum In Os Acromiale Cases

Abstract

Aim: Because most of the published researches use inadequate methods in literature, the relations between
os acromiale (OA) and rotator cuff (RC) pathology are not readily defined. The aim of this study was to
determine the pathologies of RC, biceps tendon, bursae and glenoid labrum in OA cases with using magnetic
resonans imaging (MRI).
Material and Method: Forty-three OA patients with age of 24 years and over were included in the study.
Shoulder MRI underwent in all patients. MRI exams were evaluated for pathologies of RC tendons, biceps
tendon, bursae and glenoid labrum.
Results: The frequency of OA was found 2.6%, and 81.4% of patients with OA were female. RC tear was
found in 38 patients (88.3%). Partial-thickness tear (PTT) of supraspinatus (SS) tendon was present in 31
patients (72%). Twenty-two (70%) of PTTs were as rim-rent tear. Full-thickness tear of SS tendon was detected in seven (16%) patients. Subacromial and subcoracoid bursitis were defined in 31 (72%) and 14 (32%)
patients, respectively. Biceps tendon pathology was seen in three (7%) cases. Labral pathology was seen only
in one (2%) case.
Conclusion: There is an increased ratio of rotator cuff tears in OA cases. Most of the tears are seen within
the SS tendon and tear patern is mostly PTT. There is not found an increased ratio of pathologies related to
biceps tendon and glenoid labrum. 

Keywords

• Os acromiale
• Magnetic resonance imaging
• rotator cuff

References

1. 1. Edelson, JG, C Taitz. Bony anatomy of coracoacromial arch: Implications for arthroscopic portal placement in the shoulder. Arthroscopy.1993;9:201-208.
2. 2. Uri DS, Kneeland JB, Herzog R. Os acromiale: evaluation of markers for identification on sagittal and coronal oblique MR images. Skeletal Radiol .1997;26: 31-34.
3. 3. Case DT, SE Burnett, T Nielsen. Os acromiale: population differences and their etiological significance. Homo. 2006;57:1-18.
4. 4. Hunt DR, L Bullen. The frequency of os acromiale in the Robert J. Terry collection. Int J Osteoarchaeol. 2007;17:309-317.
5. 5. Rovesta, C, Marongiu MC, Corradini A, Torricelli P, Ligabue G. Os acromiale: frequency and a review of 726 shoulder MRI. Musculoskelet Surg. 2017;101: 201-205.
6. 6. Mudge MK, Wood VE, Frykman GK. Rotator cuff tears associated with os acromiale. J Bone Jt Surg. 1984;66:427–429.
7. 7. Neer CS II. Impingement lesions. Clin Orthop. 1983;173:70-77.
8. 8. Seeger LL, Gold RH, Bassett LW, Eliman H. Shoulder impingement syndrome: MRfindings in 53 shoulders. AJR.1988;150:343-347.

9. 9. Jerosch J, Steinbeck J, Strauss JM, Schneider T. Arthroscopic subacromial decompression-indications in os acromiale?. Unfallchirurg.1994;97:69–73.
10. 10. Sammarco VJ. Os acromiale: frequency, anatomy, and clinical implications. J Bone Joint Surg Am. 2000;82:394–400.
11. 11. Park JG, Lee JK, Phelps CT. Os acromiale associated with rotator cuff impingement: MR imaging of the shoulder. Radiology. 1994;193:255-257.
12. 12. Ouellette H, Thomas BJ, Kassarjian A, Fritz B, Tétreault P, Palmer WE, Torriani M. Re-examining the association of os acromiale with supraspinatus and infraspinatus tears. Skeletal Radiol. 2007;36:835-839.