Measurements of shoulder joint forces using reverse total shoulder arthroplasty

2016 Fiscal Year Final Research Report

• Project/Area Number: 26350511
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Biomedical engineering/Biomaterial science and engineering
• Research Institution: University of Hyogo
• Principal Investigator: Higa Masaru 兵庫県立大学, 工学研究科, 准教授 (90375197)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: バイオメカニクス / 人工関節

Outline of Final Research Achievements

Reverse total shoulder arthroplasty (RTSA) has been used to treat severe complex shoulder problems as a surgical alternative to standard total shoulder arthroplasty (TSA). Soft tissue tension is thought to be an important factor in the clinical performance of reverse total shoulder arthroplasty but there have been no reports quantifying these forces intraoperatively. We have developed a strain gauges instrumented glenosphere to measure shoulder joint forces intraoperatively. Calibrations of the sensor showed approximately errors of 20% for forces. Finite element analyses showed that the current design has a plenty of stiffness. The sensor was used to confirm a feasibility of joint force measurements in a single cadaver shoulder specimen.

Free Research Field

生体医工学