Hospital Universitario La Princesa, c/ Diego de León 62, 28006 Madrid, Spain ; Universidad Autónoma de Madrid, Ciudad Universitaria de Cantoblanco, 28049 Madrid, Spain.
HSS J. 2013 Jul;9(2):161-5. doi: 10.1007/s11420-013-9342-z. Epub 2013 Jun 21.
The short, tapered, collarless Furlong Active stem has been recently associated in the published literature with significant subsidence using Roentgen stereophotogrammetric analysis.
QUESTIONS/PURPOSES: The purpose of this study was to analyze the short-term radiographic subsidence in Furlong Active HAP stems and correlate the results with the age, gender, bone morphology, and bone quality of the proximal femur, stem diameter, and medullary canal filling.
Sixty-five consecutive patients (70 hips) receiving the Furlong Active HAP stems were enrolled in this prospective series. The average follow-up was 2.99 ± 1.38 years. All patients were evaluated clinically using the Harris Hip Score (HHS) and radiographically for femoral stem subsidence. In addition, proximal femoral osteopenia, proximal femur morphology, and medullary canal filling were also evaluated.
The average subsidence was 2.4 mm (from 0 to 13 mm) at the end of the follow-up period. The average HHS score at the end of follow-up was 90 (range, 81-98). There was one intraoperative fracture.
Of the Furlong Active stems 61% subsided with initial weight bearing. Subsidence is higher in males, but no correlation has been found with age, stem diameter, morphology, osteopenia, or canal filling.
最近的文献报道，短锥形无领 Furlong 主动柄与 Roentgen 立体摄影分析发现的显著下沉有关。
问题/目的：本研究旨在分析 Furlong 主动 HAP 柄的短期 X 线下沉，并将结果与患者的年龄、性别、股骨近端的骨形态、骨质量、柄直径和髓腔填充情况进行相关性分析。
本前瞻性研究纳入了 65 例（70 髋）接受 Furlong 主动 HAP 柄治疗的患者。平均随访时间为 2.99±1.38 年。所有患者均接受了临床 Harris 髋关节评分（HHS）和股骨柄下沉的影像学评估。此外，还评估了股骨近端骨质疏松、股骨近端形态和髓腔填充情况。
随访期末平均下沉 2.4mm（0 至 13mm）。随访期末平均 HHS 评分为 90 分（81-98 分）。术中发生 1 例骨折。
在 Furlong 主动柄中，61%在初始负重时下沉。男性下沉的发生率较高，但与年龄、柄直径、形态、骨质疏松或髓腔填充无相关性。
