RESUMO
Objective To evaluate the correlation of the glenoid track and glenoidal bone loss with the recurrence dislocation rate and the Rowe score. Methods Retrospective study that assessed the glenoid track and glenoidal bone loss through preoperative magnetic resonance imaging. Patients undergoing primary arthroscopic repair of anterior Bankart were included. Patients with glenoidal bone loss greater than 21%, rotator cuff tear, scapular waist fracture, and posterior or multidirectional instability were not included. Rowe score were the primary outcome, and the recurrence rate was the secondary outcome. Results One hundred and two patients were included. Postoperative recurrent instability was reported by 8 patients (7.8%). Four patients (50%) in the group with recurrence presented glenoidal bone loss greater than 13.5% against 24 (25.5%) in the group without recurrence ( p = 0.210), with a negative predictive value of 94.6%. Three patients (37.5%) in the recurrence group were considered off-track, against 13 (13.8%) in the group without recurrence ( p = 0.109), with a negative predictive value of 94.2%. Patients with absolute glenoid track value ≤ 1.5 mm had worse results in relation to the recurrence group, with 6 patients (75%) presenting recurrence ( p = 0.003). Conclusion Off-track injury and glenoidal bone loss greater than the subcritical are not related to the recurrence rate and Rowe score, despite the high negative predictive value. The cut of the absolute value of the glenoid track at 1.5 mm had a significant relationship with the recurrence rate.
RESUMO
Abstract Objective To evaluate the correlation of the glenoid track and glenoidal bone loss with the recurrence dislocation rate and the Rowe score. Methods Retrospective study that assessed the glenoid track and glenoidal bone loss through preoperative magnetic resonance imaging. Patients undergoing primary arthroscopic repair of anterior Bankart were included. Patients with glenoidal bone loss greater than 21%, rotator cuff tear, scapular waist fracture, and posterior or multidirectional instability were not included. Rowe score were the primary outcome, and the recurrence rate was the secondary outcome. Results One hundred and two patients were included. Postoperative recurrent instability was reported by 8 patients (7.8%). Four patients (50%) in the group with recurrence presented glenoidal bone loss greater than 13.5% against 24 (25.5%) in the group without recurrence (p= 0.210), with a negative predictive value of 94.6%. Three patients (37.5%) in the recurrence group were considered off-track, against 13 (13.8%) in the group without recurrence (p= 0.109), with a negative predictive value of 94.2%. Patients with absolute glenoid track value ≤ 1.5 mm had worse results in relation to the recurrence group, with 6 patients (75%) presenting recurrence (p= 0.003). Conclusion Off-track injury and glenoidal bone loss greater than the subcritical are not related to the recurrence rate and Rowe score, despite the high negative predictive value. The cut of the absolute value of the glenoid track at 1.5 mm had a significant relationship with the recurrence rate.
Resumo Objetivo Avaliar a correlação do conceito de glenoid track e da perda óssea da cavidade glenoidal com a taxa de recidiva de luxação e pontuação na escala de Rowe. Métodos Estudo retrospectivo que aferiu o glenoid track e a perda óssea da cavidade glenoidal por ressonância magnética pré-operatória. Foram incluídos pacientes submetidos a reparo artroscópico primário de Bankart anterior. Não foram incluídos pacientes com perda óssea da cavidade glenoidal maior que 21%, rotura do manguito rotador, fratura de cintura escapular, instabilidade posterior ou multidirecional. A pontuação pela escala de Rowe foi o desfecho primário, e a taxa de recidiva foi o desfecho secundário. Resultados Cento e dois pacientes foram incluídos. A recidiva foi relatada por 8 pacientes (7,8%). Quatro pacientes (50%) do grupo com recidiva apresentaram lesão da cavidade glenoidal maior que 13,5% contra 24 (25,5%) do grupo sem recidiva (p= 0,210), com valor preditivo negativo de 94,6%. Três pacientes (37,5%) do grupo com recidiva foram considerados off-track, contra 13 (13,8%) do grupo sem recidiva (p= 0,109), com valor preditivo negativo de 94,2%. Pacientes com valor absoluto do glenoid track menor ou igual a 1,5 mm tiveram piores resultados em relação ao grupo com recidiva, sendo que 6 pacientes (75%) apresentaram recidiva (p= 0,003). Conclusão Lesão off-track e perda óssea da cavidade glenoidal maior que a subcrítica não apresentam relação significativa com a taxa de recidiva e a pontuação de Rowe, apesar do alto valor preditivo negativo. O corte do valor absoluto do glenoid track em 1,5 mm apresentou relação significativa com a taxa de recidiva.
