A preliminary evaluation of the Aber position in clinostatic MRI and weight bearing MRI in athletes. Are results useful?

Congress:

ESSR 2015

Poster Number:

P-0038

Type:

Scientific Poster

Keywords:

Musculoskeletal system, Musculoskeletal joint, MR, Diagnostic procedure, Trauma

Authors:

S. Giannini¹, G. Boni²; ¹Rome/IT, ²Foligno/IT

DOI:

10.1594/essr2015/P-0038

DOI-Link:

https://dx.doi.org/10.1594/essr2015/P-0038

Fig. 1: Aber Position offload - Slight misalignment with anterior capsular fluid film.

Fig. 2: The same patient in Aber Position in weight bearing We can see greater...

Fig. 3: Aber Position offload – glenohumeral dislocation with inhomogenous signal of...

Fig. 4: Aber position in weight bearing – posterior impingement of the humerus head,...

Purpose

Aim of this study is to show the importance of dynamic study by Aber position in shoulder instability.

Methods and Materials

We used Philips MRI equipment by 1.5 Tesla with T1 and T2 weighted TSE multiplane sequences. The basic exam has been integrated by an MRI carried on with an Esaote G scan Brio on an oblique coronal plane sequence – Aber clinostatic position with the patient in seated position, repeated with an axial weight bearing sequence, with an additional weight applied to the examining limb, in order to keep it straight and under functional load. We used the oblique coronal scansion, along the longitudinal axis...

Results

We studied 10 amateur and professional athletes in different sports (soccer, hockey, basketball, rugby, volleyball) who had a feeling of instability of an upper limb, occurred after a sport trauma caused by direct and indirect tackle to the joint. We cut out from the study those subjects who showed fractures or bone contusions. In particular, we selected patients who had a history of possible overuse caused by trauma coming from a repeated athletic actions and patients presenting a verified direct sport trauma. All athletes had...

Conclusion

The first results seem helping have a better selection of the instability cases during weight bearing exams, carried on in Aber Position. More specifically, it helps us define better capsule compromission and glenohumeral joint misalignment.

References

1.Izadpanah K, Weitzel E, Honal M et al. In Vivo Analysis of Coracoclavicular Ligament Kinematics During Shoulder Abduction Am J Sports Med., 2011:10.1177/0363546511423015 2.An KN, Browne AO, Korinek S, Tanaka S, Morrey BF. Three- dimensional kinematics of glenohumeral elevation. J Orthop Res. 1991;9(1):143-149. 3. Bosworth BM. Complete acromioclavicular dislocation. N Engl J Med. 1949;241(6):221-225. 4.Izadpanah K., Winterer, J, Vicari M. et al. Stress MRI of the Shoulder for Evaluation of Ligamentous Stabilizers in Acute and Chronic Acromioclavicular Joint Instabilities J.Magn.Reson.Imaging 2012;00:000-000

Personal Information

Dr.Silvana Giannini MD Department of Radiology Casa di Cura Villa Stuart Rome-Italy Dr.Giovanni Boni MD Sport Medicine Foligno-Italy