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    The Effect of Pin Configuration and Crossing Angle on Coronal, Sagittal and Rotational Stability in Pediatric Supracondylar Humerus Fractures Treated with Cross Pinning
    (Düzce Üniversitesi, 2023) Yeşil, Murat; Yılmaz, Bilge Kağan; Altın, Recep; Konya, Mehmet Nuri
    Aim: This study aimed to examine the effect of different pin configurations and angles of the pin crossing angle (PCA) on the stability of supracondylar humeral fractures (SHFs) in children who underwent cross pinning treatment by radiological measurements and to evaluate these findings. Material and methods: This study retrospectively analyzed the radiological outcomes of 111 children with SHFs who underwent cross-pinning treatment. Anteroposterior and lateral elbow x-rays were taken before surgery, one day after surgery, and one month after surgery. The x-rays were used to measure Baumann’s angle (BA), humerocondylar angle (HCA), lateral rotation percentage (LRP), and pin crossing angle (PCA). The effects of pin configuration and PCA on BA, HCA, and LRP were evaluated.Results: This study found significant improvements in LRP, PCA, and BA from preoperative to postoperative one month (p0.05). Likewise, the PCA above or below 90° did not influence the postoperative first month LRP, PCA, and BA (p>0.05).Conclusion: This study concluded that pin configuration or PCA did not affect the stability of cross-pinned fractures in terms of rotation or coronal and sagittal stability. These results suggest that, to the extent allowed by the anatomy of the distal humerus, the cross-pinning technique may be sufficient in terms of fracture stability in all three planes when employed with proper settings. We also propose that LRP can be used to assess and monitor the reduction quality of pediatric SHFs.