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Whole Glenoid Reconstruction for Multidirectional Instability of the Shoulder.

ABSTRACT: The surgical results of shoulder multidirectional instability are not satisfactory. To address the structural and biological factors that are related to the low success rate of surgical treatment, we developed a whole glenoid reconstruction technique, which includes mainly 270° glenoid bone grafting and capsule labrum reconstruction, and glenohumeral ligament reconstruction. Our clinical experience indicates that the application of this technique can result in optimal shoulder stability. We consider the introduction of this technique will shed light on the surgical treatment of shoulder multidirectional instability.

SUBMITTER: Zhao J

PROVIDER: S-EPMC7953041 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:BackgroundDistal tibia allograft reconstruction of the glenoid in shoulder instability has garnered significant attention over the last decade. Prior studies demonstrate significant improvement in all reported patient outcomes albeit the approach is through a subscapularis split. There have not been prior studies evaluating outcomes after lesser tuberosity osteotomy which provides excellent exposure to the anterior glenoid.We hypothesize there is significant improvement in functional outcomes and no deleterious effects after lesser tuberosity osteotomy for distal tibia allograft reconstruction of the glenoid for shoulder instability.MethodsA retrospective review was performed from 2016 of 2019 of patients undergoing distal tibia allograft reconstruction of the glenoid through a lesser tuberosity osteotomy. Patients were indicated if they had recurrent anterior shoulder instability with >20% glenoid bone loss and evidence of an off-track lesion. Clinical, imaging, and operative data were evaluated. Objective follow-up data evaluated at minimum 2 years included radiographs, range of motion, DASH, SANE, VAS, SST, ASES, and Constant scores.ResultsA total of 12 patients were available with average follow-up 28 months, average age 26 years old, and average glenoid bone loss of 33%. The patients demonstrated significant improvement in their clinical outcomes at final follow-up: DASH 42.9-8.9 (P = .004), SANE 32.2-85 (P = .00005), VAS 4.6-1.1 (P = .003), SST 7-11.4 (P = .01), ASES 50.2-90.5 (P = .001), and Constant 37.6-86.2 (P = .01). Range of motion at final follow-up was forward flexion to 161.4° (135-170°), external rotation 49.5° (40-65°), and internal rotation to T12-L1 (T7-L2) vertebral body.ConclusionThe present study demonstrates the effectiveness of a lesser tuberosity osteotomy in exposure of the glenoid for reconstruction with a distal tibia allograft. The functional integrity of the subscapularis is maintained and the patient-reported outcomes are comparable with current literature.

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Whole Glenoid Reconstruction for Multidirectional Instability of the Shoulder.

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