Computer-Assisted Planning, Simulation, and Navigation System for Periacetabular Osteotomy
| Autor: | Klaus A. Siebenrock, Lutz-P. Nolte, Li Liu, Guoyan Zheng |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Hip dysplasia
Orthodontics 030222 orthopedics medicine.diagnostic_test Periacetabular osteotomy business.industry Navigation system medicine.disease 03 medical and health sciences Femoral head 0302 clinical medicine Image-guided surgery medicine.anatomical_structure External rotation medicine Computer assisted planning Fluoroscopy 030212 general & internal medicine business |
| Zdroj: | Advances in Experimental Medicine and Biology ISBN: 9789811313950 |
| DOI: | 10.1007/978-981-13-1396-7_12 |
| Popis: | Periacetabular osteotomy (PAO) is an effective approach for surgical treatment of hip dysplasia in young adults. However, achieving an optimal acetabular reorientation during PAO is the most critical and challenging step. Routinely, the correct positioning of the acetabular fragment largely depends on the surgeon’s experience and is done under fluoroscopy to provide the surgeon with continuous live x-ray guidance. Our developed system starts with a fully automatic detection of the acetabular rim, which allows for quantifying the acetabular 3D morphology with parameters such as acetabular orientation, femoral head extrusion index (EI), lateral center-edge (LCE) angle, and total and regional femoral head coverage (FHC) ratio for computer-assisted diagnosis, planning, and simulation of PAO. Intraoperative navigation is conducted to implement the preoperative plan. Two validation studies were conducted on four sawbone models to evaluate the efficacy of the system intraoperatively and postoperatively. By comparing the preoperatively planned situation with the intraoperatively achieved situation, average errors of 0.6° ± 0.3°, 0.3° ± 0.2°, and 1.1° ± 1.1° were found, respectively, along three motion directions (flexion/extension, abduction/adduction, and external rotation/internal rotation). In addition, by comparing the preoperatively planned situation with the postoperative results, average errors of 0.9° ± 0.3° and 0.9° ± 0.7° were found for inclination and anteversion, respectively. |
| Databáze: | OpenAIRE |
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