Shoulder joint instability evaluation by CT arthrography and MR arthrography

Background and introductionOur work aimed to compare and evaluate CT arthrography (CTA) and MR arthrography (MRA) techniques in diagnosing glenohumeral joint instabilities, also help the clinician to choose the ideal diagnostic modalities CTA & MRA either separately or combined to reach the early and accurate diagnosis of glenohumeral joint instability.Patient and methodsThe study included 96 patients: 72 males, 24 females. Their age ranged from 14 to 51 years (mean = 33), complaining of shoulder dislocation whether traumatic or non-traumatic with glenohumeral instability.For every patient, intra-articular contrast injection was done followed by CT and MRI arthrography (CTA & MRA).ResultsPreliminary results showed the role of CTA & MRA in diagnosing the causes of instability. Correlation between CTA and MRA may have a role in more accurate diagnosis of glenohumeral instability.ConclusionThe combination of CT arthrography and MR arthrography is a promisable one in defining the type of instability.