PDF(Pubmed)
Abstract：
UNASSIGNED: Distal radioulnar joint (DRUJ) injuries can be devastating and challenging to manage. The multiplanar curvature exhibited by the ulna impacts the morphology of the DRUJ, making it difficult to assess through two-dimensional radiographs alone. We used full-length, three-dimensional (3D) computed tomography angiography scans to assess the relationship between ulnar bowing, DRUJ ulnar variance (UV), and sigmoid notch angle. The goal of this study was to establish normal anatomic ranges for these landmarks to improve treatment for forearm traumas and DRUJ pathologies.
UNASSIGNED: Eighty-two intact upper extremity computed tomography angiography scans were examined and reconstructed into 3D models. We characterized ulnar bowing and DRUJ metrics using computer-aided design software. Measures of central tendency and Pearson correlation coefficients were calculated for comparative analysis.
UNASSIGNED: The study yielded an average ulnar length of 272.3 mm. We identified the proximal ulnar bow at 36.7% of the bone\'s total length, possessing a depth of 10.3 mm, a proximal angle of 6.6°, and a distal angle of 3.9°. The distal ulnar bow appeared at 75.3% of the bone\'s length, characterized by a depth of 4.2 mm, a proximal angle of 2°, and a distal angle of 4.3°. In the coronal plane, the proximal angle of the proximal ulnar bow correlated positively with UV (r = 0.39, P < .001), whereas the distal angle of the distal ulnar bow correlated negatively (r = -0.48, P < .001). We also found significant correlations between the depths of both proximal and distal bows with UV (r = 0.38, P < .001; r = -0.34, P < .001, respectively). Moreover, UV within the DRUJ strongly correlated with the sigmoid notch angle (r = -0.77, P = .01). In contrast, the sagittal plane metrics did not show meaningful correlations with UV.
UNASSIGNED: Sagittal alignment and translation at the DRUJ articulation are directly related to ulna bowing at the distal ulna. A nuanced understanding of these 3D relationships can enhance preoperative planning when correcting ulnar-side pathology.
UNASSIGNED: Therapeutic IV.
UNASSIGNED: Eighty-two intact upper extremity computed tomography angiography scans were examined and reconstructed into 3D models. We characterized ulnar bowing and DRUJ metrics using computer-aided design software. Measures of central tendency and Pearson correlation coefficients were calculated for comparative analysis.
UNASSIGNED: The study yielded an average ulnar length of 272.3 mm. We identified the proximal ulnar bow at 36.7% of the bone\'s total length, possessing a depth of 10.3 mm, a proximal angle of 6.6°, and a distal angle of 3.9°. The distal ulnar bow appeared at 75.3% of the bone\'s length, characterized by a depth of 4.2 mm, a proximal angle of 2°, and a distal angle of 4.3°. In the coronal plane, the proximal angle of the proximal ulnar bow correlated positively with UV (r = 0.39, P < .001), whereas the distal angle of the distal ulnar bow correlated negatively (r = -0.48, P < .001). We also found significant correlations between the depths of both proximal and distal bows with UV (r = 0.38, P < .001; r = -0.34, P < .001, respectively). Moreover, UV within the DRUJ strongly correlated with the sigmoid notch angle (r = -0.77, P = .01). In contrast, the sagittal plane metrics did not show meaningful correlations with UV.
UNASSIGNED: Sagittal alignment and translation at the DRUJ articulation are directly related to ulna bowing at the distal ulna. A nuanced understanding of these 3D relationships can enhance preoperative planning when correcting ulnar-side pathology.
UNASSIGNED: Therapeutic IV.
摘要：
■尺尺关节（DRUJ）损伤可能是毁灭性的，并且具有挑战性。尺骨表现出的多平面曲率影响DRUJ的形态，这使得很难单独通过二维射线照片进行评估。我们用了全长，三维（3D）计算机断层扫描血管造影扫描，以评估尺骨弯曲之间的关系，DRUJ尺骨方差(UV)，和乙状结肠缺口角。这项研究的目的是建立这些标志的正常解剖范围，以改善前臂创伤和DRUJ病理的治疗。
■检查了82次完整的上肢计算机断层扫描血管造影扫描并重建为3D模型。我们使用计算机辅助设计软件对尺骨弯曲和DRUJ指标进行了表征。计算集中趋势和皮尔逊相关系数的度量进行比较分析。
■该研究得出272.3mm的平均尺骨长度。我们确定近端尺骨弓占骨骼总长度的36.7%，深度为10.3毫米，6.6°的近端角度，和3.9°的远端角度。尺骨远端弓出现在骨长度的75.3%处，以4.2毫米的深度为特征，2°的近端角度，和4.3°的远端角度。在日冕平面上,尺弓近端角度与紫外线呈正相关(r=0.39,P<.001),而远端尺骨弓的远角呈负相关（r=-0.48，P<.001）。我们还发现近端和远端弓的深度与紫外线之间存在显着相关性（分别为r=0.38，P<.001；r=-0.34，P<.001）。此外，DRUJ内的紫外线与S形切口角密切相关（r=-0.77，P=0.01）。相比之下,矢状平面指标与紫外线没有显示有意义的相关性.
■DRUJ关节处的矢状对齐和平移与尺骨远端的尺骨弯曲直接相关。对这些3D关系的细微了解可以在纠正尺侧病理时增强术前计划。
■治疗IV。
■检查了82次完整的上肢计算机断层扫描血管造影扫描并重建为3D模型。我们使用计算机辅助设计软件对尺骨弯曲和DRUJ指标进行了表征。计算集中趋势和皮尔逊相关系数的度量进行比较分析。
■该研究得出272.3mm的平均尺骨长度。我们确定近端尺骨弓占骨骼总长度的36.7%，深度为10.3毫米，6.6°的近端角度，和3.9°的远端角度。尺骨远端弓出现在骨长度的75.3%处，以4.2毫米的深度为特征，2°的近端角度，和4.3°的远端角度。在日冕平面上,尺弓近端角度与紫外线呈正相关(r=0.39,P<.001),而远端尺骨弓的远角呈负相关（r=-0.48，P<.001）。我们还发现近端和远端弓的深度与紫外线之间存在显着相关性（分别为r=0.38，P<.001；r=-0.34，P<.001）。此外，DRUJ内的紫外线与S形切口角密切相关（r=-0.77，P=0.01）。相比之下,矢状平面指标与紫外线没有显示有意义的相关性.
■DRUJ关节处的矢状对齐和平移与尺骨远端的尺骨弯曲直接相关。对这些3D关系的细微了解可以在纠正尺侧病理时增强术前计划。
■治疗IV。
