Mimura Tomohiro, Furuya Yuki, Kumagai Kosuke, Amano Yasutaka, Miyahara Shunichi, Uemura Ryota, Horikawa Sadafumi, Saito Hideki, Umeda Kohei, Ushiyama Fumitaka, Ogata Yugen, Yayama Takafumi, Mori Kanji, Imai Shinji
Department of Orthopedic Surgery, Shiga University of Medical Science, Tsukinowa-cho, Seta, Otsu, Shiga 520-2192, Japan.
J Hip Preserv Surg. 2024 Dec 25;12(1):65-73. doi: 10.1093/jhps/hnae048. eCollection 2025 Jan.
In evaluations of a cam deformity on femoroacetabular impingement, the head-neck junction (HNJ) must be accurately assessed. We conducted this study to determine the ability of plain radiography to visualize the end-to-end bone surface of the HNJ. We used six human bone models. Ten examiners evaluated the degree to which attached stainless wire marker at the 1:00, 1:30, and 2:00 radial plane defined in reconstructed computed tomography can be accurately detected on the bone surface on plain radiographies. We employed 13 plain radiographies: the cross-table lateral view, frog-leg lateral view, Espié frog-leg lateral view, false-profile view, modified false-profile view, 30° Dunn view (DV), 45° DV, 60° DV, 90° DV, 30° modified Dunn view (MDV), 45° MDV, 60° MDV, and 90° MDV. Examiners scored the degree to which the radiographic images accurately detected the stainless wire marker on the bone surface of the HNJ on a scale of 1 point (0% match) to 5 points (almost 100% match). The highest score for the 1:00 plane was 4.98 points on the 45° DV. Similarly, the highest scores of the 1:30 and 2:00 planes were 4.98 points for the 45° MDV and 4.68 points for the 90° MDV, respectively. On these bone model studies, the most suitable plain radiography for describing the HNJ at the 1:00, 1:30, and 2:00 planes were both the 45° DV, the 45° MDV, and the 90° MDV, respectively.
在评估股骨髋臼撞击症中的凸轮畸形时，必须准确评估头颈交界处（HNJ）。我们开展这项研究以确定X线平片可视化HNJ端到端骨表面的能力。我们使用了六个人体骨模型。十名检查者评估在重建计算机断层扫描中定义的1:00、1:30和2:00径向平面处附着的不锈钢丝标记物在X线平片骨表面上能够被准确检测到的程度。我们采用了13种X线平片：交叉台面侧位片、蛙腿侧位片、埃斯皮蛙腿侧位片、假轮廓位片、改良假轮廓位片、30°邓氏位片（DV）、45°DV、60°DV、90°DV、30°改良邓氏位片（MDV）、45°MDV、60°MDV和90°MDV。检查者按照1分（0%匹配）至5分（几乎100%匹配）的评分标准对X线影像准确检测HNJ骨表面不锈钢丝标记物的程度进行评分。1:00平面在45°DV上的最高得分为4.98分。同样，1:30平面和2:00平面的最高得分分别在45°MDV上为4.98分，在90°MDV上为4.68分。在这些骨模型研究中，分别描述1:00、1:30和2:00平面处HNJ最合适的X线平片是45°DV、45°MDV和90°MDV。
