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Significant differences found in glenohumeral joint morphology between dislocated, healthy patients
Among patients diagnosed with anterior instability after glenohumeral joint dislocation, significant differences in glenohumeral joint morphology were found when compared with healthy control patients, according to study results.
Researchers used bilateral CT scans to measure glenohumeral joint morphology in both shoulders of 11 patients with instability and 11 control patients. The glenoid radius of curvature (ROC) in the anterior / posterior (A/P) and superior / inferior (S/I) directions, humeral head ROC, A/P and S/I conformity index, and A/P and S/I stability angle were included as specific outcome measures.
Results showed the glenoid of the injured shoulder was flatter in patients with instability in the A/P and S/I directions vs. control patients. Similarly, the researchers found this was true for the uninjured, contralateral shoulder, as well.
Overall, no differences were detected in glenohumeral joint morphology between the instability patients’ injured and contralateral shoulders, nor were differences observed between the control groups’ dominant and nondominant shoulders, according to the researchers. – by Casey Tingle
Disclosure: The researchers report no relevant financial disclosures.