Effect of Side Struts on the Strength of Long Arm Plaster Splints: A Biomechanical Study
| Autor: | Marc C. Moore, Scott H. Conant, Thomas R. Lewis, Samuel F Thompson, Conor McBride |
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| Rok vydání: | 2019 |
| Předmět: |
Male
Humeral Fractures medicine.medical_treatment Elbow Long arm 03 medical and health sciences 0302 clinical medicine Patient age Tensile Strength Load to failure Medicine Humans Orthopedics and Sports Medicine Child Retrospective Studies Orthodontics 030222 orthopedics business.industry Significant difference Splint application General Medicine Biomechanical Phenomena Splints Casts Surgical medicine.anatomical_structure Child Preschool Pediatrics Perinatology and Child Health Equipment Failure Glass business Splint (medicine) Radius Fractures Elbow Injuries |
| Zdroj: | Journal of pediatric orthopedics. 40(2) |
| ISSN: | 1539-2570 |
| Popis: | BACKGROUND There are multiple methods of achieving upper extremity immobilization after pediatric elbow injuries; however, no biomechanical study has established an optimal construct. The goal of this study was to compare the strength of commonly used long arm splints and to evaluate the effect of reinforcing plaster splints with side struts. METHODS Five categories of long arm posterior slab splints were tested: 4-inch plaster without side struts, 4-inch plaster with a medial side strut, 4-inch plaster with medial and lateral side struts, 5-inch plaster without side struts, and 4-inch fiberglass splint material without side struts. There were 4 splints in each group. As a control, 4 half fiberglass long arm casts were also tested. Each splint or cast was mounted on a single-column tensile tester and a 3-point bending load was applied to simulate an extension moment at the elbow. The maximum load before failure was measured and an ANOVA model was used to analyze the differences between groups. Additionally, a retrospective chart review was performed of pediatric patients who were immobilized postoperatively in a long arm plaster splint with side struts. We collected data on patient age, type of fracture, time from splint application in the operating room to removal in clinic, length of follow-up, and any complications. RESULTS The 4-inch plaster splints reinforced with 2 struts had the highest average maximum load to failure (731±143 N), which was significantly higher than the 4-inch plaster splints with one strut (505±48 N) (P=0.01) and the 4-inch plaster splints without struts (100±10 N) (P |
| Databáze: | OpenAIRE |
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