The effect of deltoid lengthening on functional outcome for reverse shoulder arthroplasty
| Autor: | Vani J. Sabesan, D. Josserand, Daniel J. Lombardo, J. M. Wiater, Graysen R. Petersen-Fitts, Timothy Jelsema, D. Buzas |
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| Rok vydání: | 2016 |
| Předmět: |
Male
medicine.medical_specialty Rotation medicine.medical_treatment Deltoid curve Prosthesis Design Severity of Illness Index 03 medical and health sciences 0302 clinical medicine Deltoid muscle medicine Humans Orthopedics and Sports Medicine Acromion Range of Motion Articular Aged Retrospective Studies 030222 orthopedics Shoulder Joint business.industry Shoulder Prosthesis Recovery of Function 030229 sport sciences Deltoid Muscle Arthroplasty Surgery body regions Treatment Outcome medicine.anatomical_structure Arthroplasty Replacement Shoulder Orthopedic surgery Female Shoulder joint business human activities Greater Tuberosity |
| Zdroj: | MUSCULOSKELETAL SURGERY. 100:127-132 |
| ISSN: | 2035-5114 2035-5106 |
| DOI: | 10.1007/s12306-016-0400-9 |
| Popis: | Reverse shoulder arthroplasty (RSA) is based on the biomechanical advantages of lengthening the deltoid while medializing its center of rotation (COR). Little evidence exists describing the clinical benefits of these biomechanical advantages. The purpose of this study is to assess the relationship between deltoid lengthening and medialization of the COR with functional outcomes for RSA patients. We retrospectively reviewed patients treated with primary RSA. Radiographic measurements of deltoid length and COR, assessment of forward elevation (FE) and external rotation (ER), and functional outcome scores were obtained pre- and postoperatively. Linear regression analyses were performed to assess the relationship between these radiographic measurements and changes in shoulder functionality. On average, patients improved significantly in function and functional outcome scores. Postoperative COR correlated weakly with postoperative FE. There were weakly negative correlations between increase in acromion to greater tuberosity distance and postoperative FE, and between deltoid lengthening and FE improvement. Our results suggest that deltoid lengthening does not correlate with improvements in active FE or ER. These findings could indicate that change in deltoid length is less important than previously thought. Furthermore, the negative correlations seen could indicate that there is over-tensioning of the deltoid in specific cases. Further studies are needed to better assess the role of deltoid length and other factors that may impact RSA outcomes. |
| Databáze: | OpenAIRE |
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