Effect of baseplate size on primary glenoid stability and impingement-free range of motion in reverse shoulder arthroplasty
- Authors
- Chae, Soo-Won; Kim, Soung-Yon; Lee, Haea; Yon, Joung-Ro; Lee, Juneyoung; Han, Seung-Ho
- Issue Date
- 9-Dec-2014
- Publisher
- BIOMED CENTRAL LTD
- Keywords
- Reverse shoulder arthroplasty; Smaller baseplate; Biomechanical testing; Simulated computer model
- Citation
- BMC MUSCULOSKELETAL DISORDERS, v.15
- Indexed
- SCIE
SCOPUS
- Journal Title
- BMC MUSCULOSKELETAL DISORDERS
- Volume
- 15
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/96512
- DOI
- 10.1186/1471-2474-15-417
- ISSN
- 1471-2474
- Abstract
- Background: Use of a baseplate with a smaller diameter in reverse shoulder arthroplasty is increasing, especially in patients with a small glenoid or glenoid wear. However, the effect of a smaller baseplate on stability of the glenoid component has not been evaluated. Thus, the purpose of this study was to determine whether a smaller baseplate (25 mm) is beneficial to the initial stability of the glenoid component compared to that with a baseplate of a commonly used size (29 mm). Methods: Micromotion of glenoid components attached to 14 scapulae of fresh-frozen cadavers was measured and compared between 25- and 29-mm baseplates in biomechanical testing. Impingement-free range of motion in abduction, adduction, internal rotation, and external rotation was evaluated by using a simulated computer model constructed based on the same fresh-frozen cadavers used in biomechanical testing. Results: Micromotion at the inferior third of the glenoid-glenosphere interface was higher in the 29-mm baseplate group than in the 25-mm baseplate group during both 0.7- and 1-body weight cyclic loading in biomechanical testing. Adduction deficit was smaller, and total impingement-free range of motion from abduction to adduction and rotation were greater in the 25-mm baseplate group than in the 29-mm baseplate group in the simulated computer model. Conclusions: Use of a baseplate with a smaller diameter (25 mm) in reverse shoulder arthroplasty is suitable for improving the primary stability of the glenoid component. With a smaller baseplate, impingement-free range of motion is optimized in a smaller glenoid.
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Collections - College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
- College of Medicine > Department of Medical Science > 1. Journal Articles
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