Abstract

Objective The aim of this study was to report outcomes in dogs with periprosthetic femoral fractures associated with a press-fit cementless femoral total hip replacement implant.

Methods Electronic medical records and digital radiographs were used to identify dogs with periprosthetic femoral fractures associated with press-fit cementless total hip replacement. Data collected included signalment, weight, time of fracture, cause of fracture, presence of intra-operative fissure, fracture type, repair technique, and clinical and radiographic outcomes. Long-term patient outcome was assessed by communication with owners or referring veterinarians.

Results Twenty-eight dogs with femoral fracture repair associated with cementless press-fit total hip replacement were identified. Eight of the fractures occurred intraoperatively and 20 occurred at a median of 2 days postoperatively. An oblique or spiral configuration was noted in 19 cases and 15 occurred at the distal end of the femoral stem (type B), with thirteen type B1, one type B2 and one type B3 fractures. Fractures were repaired with non-locking (18/28) or locking-plate fixation (10/28). Cerclage wire was applied around the plate and proximal bone segment in 17/28 dogs. Major complications occurred in 7/28 cases (five deep infection, two mechanical failures). Bone healing was noted in 21/23 cases, for which follow-up radiographic interpretation was available. Return to function was complete in 17 cases, acceptable in 8 cases and unacceptable in 3 cases.

Conclusions While cementless total hip replacement periprosthetic femoral fractures can be successfully repaired with lateral plate fixation, the risk of infection appears to be high.

Authors' Contributions

Isobel C. Monotti and Christopher A. Preston contributed to conception of study, study design, acquisition of data and data analysis and interpretation. Scott W. Kidd contributed to acquisition of data and data analysis and interpretation. All authors drafted, revised and approved the submitted manuscript.

Conflict of Interest

None declared.

中文翻译：

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非骨水泥压合全髋关节置换术中股骨周围股骨骨折的治疗结果。

摘要

目的 本研究的目的是报告假体周围股骨骨折犬与压入式非骨水泥股骨全髋关节置换植入物相关的结果。

方法使用 电子病历和数字X射线照片来识别假体股骨骨折伴压入式非骨水泥全髋关节置换的狗。收集的数据包括信号，体重，骨折时间，骨折原因，术中裂痕的存在，骨折类型，修复技术以及临床和影像学结果。通过与主人或转介的兽医沟通来评估患者的长期结局。

结果 确定了28例股骨骨折修复与非骨水泥压入式全髋关节置换相关的犬。其中8处骨折发生在术中，20处发生在术后2天。在19例患者中发现了倾斜或螺旋形构型，其中15例发生在股骨干的远端（B型），其中B13型，B2型和B3型骨折13例。用非锁定（18/28）或锁定板固定（10/28）修复骨折。在17/28只狗中，在板和近端骨段周围施加环扎线。主要并发症发生在7/28例中（五个深部感染，两个机械故障）。在21/23例中发现了骨愈合，可以进行后续的放射学解释。恢复功能已完成17例，

结论 虽然采用侧板固定术可以成功修复非骨水泥性全髋关节置换假体周围股骨骨折，但感染的风险似乎很高。

作者的贡献

Isobel C. Monotti和Christopher A. Preston为研究概念，研究设计，数据获取以及数据分析和解释做出了贡献。斯科特·基德（Scott W. Kidd）为数据获取以及数据分析和解释做出了贡献。所有作者都起草，修改和批准了提交的手稿。

利益冲突

没有声明。