Biomechanical properties of splint materials while curing |
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| Institution: | 1. Orthopedic Surgery and Traumatology, Servicio de Cirugía Ortopédica y Traumatología, Hospital Miguel Servet, Paseo Isabel la Católica, 1-3, Zaragoza 50.009, Spain;2. Institute for Health Research Aragón, Zaragoza, Spain;3. Universidad de Zaragoza, Spain;1. Orthopaedic Associates of Muskegon, 260 Jefferson Ave SE Suite 115 Grand Rapids, Michigan, 49503, United States;2. McLaren Flint Orthopaedic Surgery Residency, 401 South Ballenger Highway Flint, Michigan, 48532, United States;3. Trauma Research Institute, Spectrum Health, 100 Michigan St NE Grand Rapids, Michigan, 49503, United States;4. Spectrum Health Butterworth Hospital, 100 Michigan St NE Grand Rapids, Michigan, 49503, United States;5. Spectrum Health, Scholarly Activity and Scientific Support, Spectrum Health Office of Research, 100 Michigan St NE Grand Rapids, Michigan, 49503, United States;1. Department of Traumatology, Orthopedics and Surgery of Extreme Conditions, Kazan State Medical University, 49 Butlerova, Tatarstan Respublika, Kazan 420012, Russian Federation;2. Trauma Department, The Central Hospital of WuHan (Affiliated to Tongji Medical College, Huazhong University of Science and Technology), 26 Shengli Street, Wuhan 430014, China;3. Department of Traumatology №1, Orthopedics, Kazan Clinical Hospital No.7, 54 Marshala Chuykova Str., Tatarstan Respublika, Kazan 420103, Russian Federation;1. Department of Radiology, Alfred Health, Melbourne, Australia;2. Department of Surgery, Monash University, Australia;3. National Trauma Research Institute, Central Clinical School, Monash University, Melbourne, Australia;4. Department of Trauma, Alfred Health, Melbourne, Australia;5. Department of Radiology, Cork University Hospital, Cork, Ireland |
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| Abstract: | Many studies have evaluated splint strength at maturity with multiple splint materials, methods, and configurations but none have analyzed splints as they cure. The purpose of this study is to evaluate the properties of different splint materials immediately following activation and as they mature.Splints were dipped for three seconds in two temperatures of water and an additional group of fiberglass with no water was tested as well. Splint weight was taken as an additional measurement to assure homogenous groups. All splints were tested in three-point bending at a constant displacement.The generalized linear model (GLM) including all time frames showed differences in yield load and ultimate loads after three minutes. All ultimate loads occurred at greater than 20° of angulation. Plaster had a much lower displacement at its yield load at all times after 3 min. Plaster had a higher stiffness at 1° of angulation at all time points after six minutes. The GLM that excluded the three-day time showed that the higher temperature increased initial stiffness in the splints at three and six minutes.Fiberglass has a higher yield point and ultimate load when compared to plaster. However, these loads were measured at significant splint angulation for the fiberglass, suggesting that plaster is acting as a true splint. Fiberglass is stronger and faster to cure than plaster. In situations where the surgeon desires the strongest splint, fiberglass may be preferable. However, the initial stiffness of plaster is superior to fiberglass. |
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