Veterinary Orthopedic and Sports Medicine Group, Annapolis Junction, Maryland, USA.
College of Veterinary Medicine, Veterinary Teaching Hospital, The Ohio State University, Columbus, Ohio, USA.
Vet Surg. 2022 Feb;51(2):286-295. doi: 10.1111/vsu.13752. Epub 2021 Dec 26.
To describe a femoral stem selection process based on case features in dogs treated with total hip replacement (THR) by an expert surgeon, compare complications between implant types, and develop an algorithm for stem type selection.
Retrospective study.
128 dogs, 135 THR.
Data collected included breed, age, weight, canal flare index (CFI), and implant type: cementless (BFX), cementless with a collared stem (BFX-C), hybrid (cementless acetabular component with cemented stem), and cemented (CFX).
Of the 135 THRs, 69 BFX, 47 hybrid, and 18 BFX-C were performed. Dogs receiving hybrid (mean 5.5 years) were older than those receiving BFX (2.5 years, p < .0001) and BFX-C implants (2.5 years, p = .0014). The mean weights of dogs with hybrid, BFX, and BFX-C implants were 40.0, 31.0, and 35.3 kg, respectively, with dogs receiving hybrid heavier than those receiving BFX (p < .0001). Mean CFI for hybrid (1.52) was lower than for BFX (1.79, p < .0001) and BFX-C (1.76, p = .0021). Total complication rate was 14.0% with catastrophic complications in 1.5% and no association between implant type and risk of complications (p = .36). Femur fractures occurred in 2.9% of all cases and 1.1% of cementless THR cases.
Dogs receiving hybrid THR were older with lower CFI than dogs receiving BFX and BFX-C and heavier than dogs receiving BFX. There was no difference in complications between groups. Catastrophic complications and femur fractures occurred less frequently compared to recent studies of BFX THR.
Careful preoperative assessment and implant selection can reduce complications of canine THR.
描述一种基于专家医生手术治疗的犬全髋关节置换（THR）病例特征的股骨柄选择过程，比较不同植入物类型的并发症，并制定一种柄类型选择算法。
回顾性研究。
128 只狗，135 例 THR。
收集的数据包括品种、年龄、体重、髓腔开口指数（CFI）和植入物类型：非骨水泥（BFX）、带颈骨水泥（BFX-C）、混合（非骨水泥髋臼组件与骨水泥固定柄）和骨水泥（CFX）。
在 135 例 THR 中，69 例行 BFX、47 例行混合、18 例行 BFX-C。接受混合植入物（平均 5.5 岁）的狗比接受 BFX（2.5 岁，p<.0001）和 BFX-C 植入物（2.5 岁，p=.0014）的狗年龄更大。接受混合、BFX 和 BFX-C 植入物的狗的平均体重分别为 40.0、31.0 和 35.3kg，接受混合植入物的狗比接受 BFX 的狗更重（p<.0001）。混合植入物的平均 CFI（1.52）低于 BFX（1.79，p<.0001）和 BFX-C（1.76，p=.0021）。总并发症发生率为 14.0%，灾难性并发症发生率为 1.5%，植入物类型与并发症风险之间无相关性（p=.36）。所有病例中有 2.9%发生股骨骨折，非骨水泥 THR 病例中有 1.1%发生股骨骨折。
接受混合 THR 的狗比接受 BFX 和 BFX-C 的狗年龄更大，CFI 更低，比接受 BFX 的狗更重。各组之间的并发症无差异。灾难性并发症和股骨骨折的发生率低于最近 BFX THR 的研究。
术前仔细评估和植入物选择可以降低犬 THR 的并发症发生率。
