Accuracy of intertrochanteric osteotomy for patients with slipped capital femoral epiphysis operated with 3D printed patient-specific guides

• Published in: Journal of Orthopaedic Surgery and Research 2024, Vol.19 (1)
• Main Authors: van den Boorn, M, Dobbe, J. G. G, Lagerburg, V, Witbreuk, M. M. E. H, Streekstra, G. J
• Format: Report
• Language: English
• Subjects: Comparative analysis; CT imaging; Medical research; Medicine, Experimental; Osteotomy
• ISSN: 1749-799X; 1749-799X
• DOI: 10.1186/s13018-024-05235-4

Slipped Capital Femoral Epiphysis (SCFE), is one of the most common hip disorders in adolescents, and is treated surgically by performing an Imhäuser osteotomy. The use of 3D printed guides has shown promise in improving the accuracy of the osteotomy. However, misplacement of the guide may limit the improvement. Therefore, the aim of this study was to investigate, postoperatively, the degree of malalignment of 3D printed guides compared to the 3D planning. Five SCFE patients were included in the study. Femoral head malalignment improved from 16 to 40 mm preoperatively to 11-17 mm postoperatively. Rotational malalignment improved from 29-63â° preoperatively to 15-31â° postoperatively. Residual error was mostly attributed to plate malposition, with residual translation in the range of 3-13 mm and rotation of 8-28â°. Although the postoperative position improved after surgery with 3D printed surgical guides and plates, there was a residual deviation from the planned position persisted. Further research is recommended to improve the design, accuracy of guide placement and surgery in this anatomically challenging region.