• Injury · Jul 2023

    Evaluation of the relationship between scapula morphology and anterior shoulder dislocation accompanying greater tuberosity fracture.

    • Mustafa Özer, Haluk Yaka, Faik Türkmen, Burkay Kutluhan Kaçira, Ahmet Yiğit Kaptan, and Ulunay Kanatli.
    • Konya City Hospital, Department of Orthopaedics & Traumatology, Konya 42020, Turkey.
    • Injury. 2023 Jul 1; 54 (7): 110770110770.

    INTRODUCTıON: It is estimated that 5-30% of traumatic anterior shoulder dislocations are accompanied by greater tuberosity fracture (GTF), and the pathomechanism of these fractures is not yet clear. Our hypothesis is to examine the relationship between the scapula morphology and anterior shoulder dislocation (ASD) accompanying GTF. MATERıALS AND MethodsThe patients were divided into two groups according to the accompanying GTF. 40 patients with isolated traumatic ASD and 31 patients with accompanying GTF were included in the study. Critical shoulder angle (CSA), glenoid inclination (GI), acromial index (AI) and greater tuberosity angle (GTA) values were measured in two sessions by two independent observers in the standard antero-posterior radiographs of the patients in both groups. ResultsThe mean CSA was 40.82°±3.19° and 35.49°±2.19° in accompanying GTF group and the isolated ASD group, respectively. The mean CSA was significantly higher in accompanying GTF group than isolated ASD group(P<0.001). The GI was significantly higher in the isolated ASD than in accompanying GTF group (P = 0.001). The mean GI was 18.7°±6.85° and 10.45°±4.87° in accompanying GTF group and the isolated ASD, respectively. Cut-off value of CSA and GI was 38° (88.2% sensitivity,88.9% specificity) and 14.5° (70.6% sensitivity and 72.2% specificity), respectively. There was no significant difference regarding the mean GTA and AI values between GTF group and the isolated ASD group (P = 0.98, P = 0.63). CONCLUSıONS: Increased CSA and GI values are associated with traumatic anterior shoulder dislocation accompanied by greater tuberosity fracture.Copyright © 2023 Elsevier Ltd. All rights reserved.

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