Key result
Multidetector computed tomography detected off-track Hill-Sachs lesions in 40% of patients compared to 35% by arthroscopy, demonstrating its accuracy in preoperative evaluation.
Why the study?
Does MDCT accurately detect and evaluate glenoid and humeral head bone loss compared to arthroscopy in patients with recurrent anterior shoulder joint dislocation?
Observational (n=24)
Does MDCT accurately detect and evaluate glenoid and humeral head bone loss compared to arthroscopy in patients with recurrent anterior shoulder joint dislocation?
Absolute Event Rate: 40% vs 35%
MDCT is an optimal and accurate imaging modality for the preoperative evaluation of glenoid and humeral head bone loss in recurrent shoulder dislocation.
MDCT may quantify glenoid and humeral bone loss in recurrent shoulder instability; hypothesis-generating and requires prospective validation before practice change.
This study aimed to assess the role of multidetector computed tomography (MDCT) in detection and evaluation of severity of glenoid and humeral head bone loss in cases of recurrent anterior shoulder joint dislocation. Twenty four patients were included in the study. MDCT with 3D VR examination was performed to both shoulders of all patients. The area of the missing glenoid was calculated as well as glenoid track and Hill-Sachs interval in cases of humeral head bone loss. The findings were compared with the intra operative arthroscopic results. MDCT could detect minimal glenoid bone loss in 19 patients (79.2%), moderate glenoid bone loss in 4 patients (16.7%) and severe glenoid bone loss in 1 patient (4.2%), while arthroscope detected minimal loss in 16 patients (66.7%), moderate glenoid bone loss in 7 patients (29.2%) and significant glenoid bone loss in 1 patient (4.2%). Off-track Hill-Sachs lesions were detected by MDCT in 40% of patients and reduced to 35% of patients by arthroscopy. MDCT is an optimal imaging modality in preoperative evaluation of glenoid and humeral head bone loss. It is the most accurate radiologic method in evaluating the new concepts of on-track and off- track Hill-Sachs lesions.
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Khattab et al. (2018) conducted an observational in Recurrent anterior shoulder joint dislocation (n=24). Multidetector computed tomography (MDCT) vs. Intra-operative arthroscopy was evaluated on Detection of off-track Hill-Sachs lesions. Multidetector computed tomography detected off-track Hill-Sachs lesions in 40% of patients compared to 35% by arthroscopy, demonstrating its accuracy in preoperative evaluation.
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