Use of rotational periosteal flaps in primary repair of sinofacial fractures in seven horses

ABSTRACT

Case history: Medical records were reviewed of horses (n?=?7) undergoing surgery for fracture of one or more facial bones extending into the paranasal sinuses that was repaired primarily within 24 hours of the time of injury using a rotational periosteal flap, between April 2009 and May 2017. A kick from another horse was the cause of the injury of three horses, and one horse was injured when it collided with a tree. The cause of the injury of three horses was unknown.

Clinical findings and treatment: Fractures were of the right maxillary bone in two horses, the left maxillary bone in two horses, the left frontal and left nasal bones in two horses, and the right frontal bones in one horse. The fracture of all but one horse was accompanied by an open wound. The fracture of all seven horses was reduced, stabilised, and covered with a rotational, periosteal flap. Surgery was carried out while standing in six horses, and while anesthetised in one horse. All horses had a deficit in the fractured facial bones after the fracture was reduced. Four horses had complications following surgery, but all horses were reported to have excellent cosmetic outcomes and had retuned to their previous level of activity, as reported by their owners.

Clinical relevance: Covering a primarily repaired sinofacial fracture of a horse with a rotational periosteal flap resulted in good cosmetic outcomes, and may be especially beneficial if the fracture is accompanied by loss of bone.     

管道计算机辅助断裂评定系统研究

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Effect of Water on the Mechanical Behaviour of Extruded Flat Bread

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竹塑复合材料的冲击韧性

以高密度聚乙烯(HDPE)、马来酸酐接枝聚乙烯(MAPE)、竹浆纤维、竹造纸剩余物竹屑、白泥为试验原料,制造竹塑复合材料。采用基本断裂功(EWF)方法对竹屑/HDPE、白泥/竹屑/HDPE和竹浆纤维/竹屑/HDPE3种复合材料的冲击韧性进行了研究,比较了不同质量分数的竹屑、白泥、竹浆纤维对复合材料各性能参数的影响。结果表明:复合材料的比基本断裂功(we)随着竹屑和白泥的增加逐渐下降,随着竹浆纤维的增加显著提高;竹屑和竹浆纤维的质量分数对竹塑复合材料的比非基本断裂功(βwp)影响较小。     

木材微观构造与拉伸断裂的关系

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Experimental Study on Flexural Toughness and Fatigue Property of Polypropylene (PP) Fiber Reinforced Cement-stabilized Macadam

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The Distribution of Piezometric Head along Wedge-shaped Fractures

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