| Autor: |
Patrick J. Denard, Georges Haidamous, Cameron Phillips |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Seminars in Arthroplasty: JSES. 31:330-338 |
| ISSN: |
1045-4527 |
| DOI: |
10.1053/j.sart.2021.01.009 |
| Popis: |
Background The purpose of this study was to evaluate the relationship between preoperative subscapularis (SSc) status as well as radiographic factors with internal rotation (IR) following reverse shoulder arthroplasty (RSA). Our hypothesis was that increased glenosphere lateralization and SSc insertion lateralization and the absence of a preoperative SSc tear would be associated with improved postoperative IR (IRF). Methods A retrospective review was performed of primary RSAs (n = 132) by a single surgeon using a 135° inlay prosthesis. Range of motion including forward flexion (FFF), external rotation (ERF) and IRF were evaluated at one year postoperative. IRF was divided into high (≥L4) and low (≤L4) groups. Preoperative SSc status, glenosphere size, and postoperative positions of the glenosphere and humerus were assessed. Novel radiographic factors were used to assess lateralization including the lesser tuberosity scapula (LTS) and lateral glenosphere scapula (LGS) ratios. Results Only 32% of patients achieved IRF ≥ L4 postoperatively. Patients who achieved high IRF had a lower incidence of preoperative SSc tear compared to those who had an IRF Conclusion With a 135° inlay prosthesis design, an intact SSc preoperatively, as well as increased lateralization parameters, LTS and LGS ratios are associated with increased postoperative IR following RSA. Level of Evidence Level III; Retrospective Case-control Comparative Study |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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