Article ; Online: Neurogenic heterotopic ossification of the hip: Magnetic resonance imaging versus computed tomography for pre-surgical assessment.
2024 Volume 175, Page(s) 111466
Abstract: Purpose: Neurogenic heterotopic ossification (NHO) of the hip is a frequent complication of spinal cord injuries, often requiring surgical management. Pre-surgical imaging assessment is essential, usually with computed tomography (CT)-scan. We aimed to ... ...
| Abstract | Purpose: Neurogenic heterotopic ossification (NHO) of the hip is a frequent complication of spinal cord injuries, often requiring surgical management. Pre-surgical imaging assessment is essential, usually with computed tomography (CT)-scan. We aimed to compare magnetic resonance imaging (MRI) and CT for pre-surgical imaging assessment of the NHO, particularly for their relationships with vessels and nerves. Method: This prospective study included consecutive patients who underwent surgery for NHO from July 2019 to April 2022. All patients had CT angiography and MRI including Zero Echo Time and TRICKS sequences. Radiologists used standardized reports for CT and MRI to evaluate NHO and their features, bone mineralization, and relation to the arteries, veins and nerves. Agreement between pre-surgical CT and MRI was evaluated. Results: Twenty-four patients (mean age: 53.5 ± 12.2 years) were included, among which 7 had bilateral NHO (31 hips). NHO were anterior in 15/31 hips (48 %), multifragmented in 25/31 hips (81 %). Mild and significant demineralization was most frequent. Gutter and tunnel were reported in 11.1 % of the arteries. Nerves were more often identified in MRI than in CT-scan. Agreement coefficients between CT and MRI were excellent for NHO location (0.95) and implantation (0.92), good for fragmentation (0.70), contact with joint capsule (0.66), bone mineralization (0.74), and relation to arteries (0.85), veins (0.76), sciatic nerve (0.7) and moderate for femoral nerve (0.47). Conclusion: MRI exhibited a good agreement with CT for pre-surgical assessment of NHO of the hip, especially to evaluate their relationships with the arteries, veins and sciatic nerve. Femoral nerves were more often identified in MRI than in CT-scan. |
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| MeSH term(s) | Humans ; Male ; Female ; Ossification, Heterotopic/diagnostic imaging ; Middle Aged ; Magnetic Resonance Imaging/methods ; Tomography, X-Ray Computed/methods ; Prospective Studies ; Preoperative Care/methods ; Adult ; Aged ; Hip Joint/diagnostic imaging ; Hip Joint/surgery ; Spinal Cord Injuries/diagnostic imaging ; Spinal Cord Injuries/complications |
| Language | English |
| Publishing date | 2024-04-10 |
| Publishing country | Ireland |
| Document type | Journal Article ; Comparative Study |
| ZDB-ID | 138815-0 |
| ISSN | 1872-7727 ; 0720-048X |
| ISSN (online) | 1872-7727 |
| ISSN | 0720-048X |
| DOI | 10.1016/j.ejrad.2024.111466 |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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