Importance of sagittal MR imaging in nontraumatic femoral head osteonecrosis in children.

Pediatric Radiology
Alice S HaDiego Jaramillo

Abstract

In nontraumatic femoral head osteonecrosis, characterization of femoral head collapse is important in staging disease progression and planning treatment. Few prior studies have quantitatively compared the ability of sagittal and coronal MR images to detect femoral head collapse. We hypothesized that sagittal MR images show a greater degree and angular span of femoral head collapse than coronal images. We reviewed 38 hip MRI scans of nontraumatic femoral head osteonecrosis from 34 pediatric patients. In both sagittal and coronal images, the maximal extent and angular location along with the angular span of the femoral head collapse were measured. Differences were evaluated using a paired t-test. The extent of bone and cartilage loss from the femoral head was evaluated. Sagittal MR images showed 29% maximal femoral head radius collapse, whereas coronal images showed 16% collapse (P<0.001). Sagittal images showed a larger angular span of collapse (115 degrees ) than coronal images (55 degrees , P<0.001). Sagittal images showed greater epiphyseal bone loss in the anterior than in the posterior portion (P<0.001), whereas coronal images did not show a significant difference in bone loss between the medial and lateral portion (P=0.32)...Continue Reading

References

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Citations

May 19, 2009·Pediatric Radiology·Diego Jaramillo
Oct 22, 2009·AJR. American Journal of Roentgenology·Jonathan R Dillman, Ramiro J Hernandez
Mar 13, 2014·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Camilo JaimesDiego Jaramillo
Jul 16, 2014·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Mark D MurpheyMark J Kransdorf
Dec 18, 2013·Seminars in Ultrasound, CT, and MR·David DinanNancy A Chauvin
Jun 16, 2009·Magnetic Resonance Imaging Clinics of North America·Jerry R Dwek
Jun 26, 2018·The Journal of the American Academy of Orthopaedic Surgeons·Jennifer C LaineDerek M Kelly
Oct 12, 2017·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Jie C NguyenJerry R Dwek

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