Duke University Health System, Durham, NC, USA.
Hand (N Y). 2020 Nov;15(6):863-869. doi: 10.1177/1558944719832041. Epub 2019 Mar 2.
The distal radius is commonly used as a bone graft donor site for surgery in the hand and wrist. The aim of this study was to evaluate the volume and relative density of cancellous bone in the distal radius. Thirty-four consecutive computed tomographic scans of the wrist in 33 patients without distal radius pathology were included. For each subject, 6 spherical regions of interest (ROIs) were identified within the distal radius. In each ROI, volumetric measurements and mean Hounsfield unit (HFU) values were recorded by 2 observers using a 3-dimensional imaging reconstruction software. Compared with proximal bone, distal bone had larger volume (0.82 vs 0.27 cm) and greater relative density (178 vs 152 HFU) on average. Among the 6 ROIs, the distal-central region had the largest average volume (1.20 cm) and the distal-ulnar ROI had the greatest average relative density (193 HFU). Based on these results, we recommend performing cancellous autograft harvest relatively distal and ulnar within the distal radius.
桡骨远端通常被用作手部和腕部手术的骨移植物供体部位。本研究旨在评估桡骨远端松质骨的体积和相对密度。 纳入了 33 名无桡骨远端病变的患者的 34 例连续腕部计算机断层扫描。对于每个受试者，在桡骨远端识别了 6 个球形感兴趣区（ROI）。每个 ROI 中，两名观察者使用三维成像重建软件记录了体积测量值和平均亨氏单位（HFU）值。 与近侧骨相比，远侧骨的体积较大（0.82 比 0.27 cm），相对密度较大（178 比 152 HFU）。在 6 个 ROI 中，远端中央 ROI 的平均体积最大（1.20 cm），而远端尺侧 ROI 的平均相对密度最大（193 HFU）。 根据这些结果，我们建议在桡骨远端相对远端和尺侧进行松质骨自体移植物采集。
