New predictors for subscapularis tear: Coraco-lesser tuberosity angle, lesser tuberosity angle, and lesser tuberosity height - 30/01/20
Bienvenido a EM-consulte, la referencia de los profesionales de la salud.
Artículo gratuito.
Conéctese para beneficiarse!
Abstract |
Background |
The pathogenesis of degenerative subscapularis (SC) tear is not clear, several mechanisms are involved: intrinsic tendon degeneration or subcoracoid impingement. The aim of this study was to propose new radiographic markers, the coraco-lesser tuberosity angle (CLA), lesser tuberosity angle (LTA) and lesser tuberosity height (LTH). The hypothesis was that higher values of CLA, LTA, and LTH would be associated with a higher likelihood in detecting a SC tear.
Method |
A total of 114 patients who classified as SC tears through arthroscopic evaluation were retrospectively enrolled in the study from 2016 to 2018. Fifty-seven patients with impingement syndrome were also enrolled as the control group for normal-population comparison. The CLA was measured on an anteroposterior shoulder x-ray image with the arm in neutral rotation, the LTA and LTH were measured on magnetic resonance imaging. Multivariable analyses were used to clarify the potential risks for SC tears. All measurements were calculated by two shoulder surgeons independently measured at 2 different times, 1 month apart.
Results |
The intra- and inter-observer reliabilities for radiologic measurements and the interobserver reliability of SC tear classification were almost perfect. The mean CLA value of SC tear group (41.4±4.2°) was significantly larger than that of the control group (38.7±4.0°, p<0.001). The mean LTA value of SC tear group (33.4±4.3°) was significantly larger than that of the control group (31.0±3.9°, p=0.001). Mean LTH value was 9.5±1.9mm in patients and 8.9±1.5mm for controls, there was no statistically significant difference (p=0.054). Multivariable analysis showed that larger CLAs significantly increased the risk of SC tears, with odds ratios of 1.17 per degree. Moreover, larger LTAs also significantly increased the risk of SC tears, with odds ratios of 1.14 per degree.
Conclusion |
Our findings confirmed associations between new predictors (CLA and LTA) and SC tears. CLA and LTA values were greater in patients with SC tears than in controls, suggesting that they may be independent risk factors for SC tear onset.
Level of evidence |
IV, retrospective study.
El texto completo de este artículo está disponible en PDF.Keywords : Rotator cuff, Subscapularis, Coracoid, Lesser tuberosity
Esquema
Vol 106 - N° 1
P. 45-51 - février 2020 Regresar al número
Artículo precedente
- 3D motion analysis of latissimus dorsi tendon transfer in patients with posterosuperior rotator cuff tears: Analysis of proprioception and the ability to perform ADLS
- Pit Hetto, Sarah Erhard, Mirjam Thielen, Sebastian I. Wolf, Felix Zeifang, Stefan van Drongelen, Michael W. Maier
- Understanding the causes behind coracoid graft osteolys?s in latarjet procedure (finite element analysis and comparison of three fixation methods)
- Nazmi Bülent Alp, O?uz Do?an, Tufan Gürkan Y?lmaz, Onur Can Kalay, Abdellah Ait Moussa, Fatih Karpat, Morshed Khandaker, Gokhan Akdag
Bienvenido a EM-consulte, la referencia de los profesionales de la salud.