We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.
We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.
from Section 16 - Bone
Published online by Cambridge University Press: 05 November 2011
Imaging description
Subluxation of the hip in spina bifida, cerebral palsy, and other paralytic disorders is due to the pull of spastic hip adductors and flexors. Iliopsoas transfer is a surgical procedure designed to restore muscular balance and prevent hip dislocation by transposition of the iliopsoas muscle through a surgically created defect in the iliac bone with reattachment to the femur [1,2]. The resulting window in the iliac bone is seen at imaging as a large lucent defect that may simulate tumor (Figure 101.1).
Importance
The iliac bone defect due to iliopsoas transfer might be mistaken for a lucent bone tumor at plain radiography, although the absence of a mass at CT or MRI should prevent this misdiagnosis.
Typical clinical scenario
This defect can be seen (either unilaterally or bilaterally) in patients affected by spastic paralytic disorders such as spina bifida or cerebral palsy.
Differential diagnosis
The appearance of an iliac bone defect due to iliopsoas transfer is characteristic, and awareness of the entity should be sufficient to ensure correct diagnosis. Correlation with the surgical history should help confirm in cases of uncertainty.
Teaching point
A large lucent window or defect in the iliac bone is characteristic of prior iliopsoas transfer.
To save this book to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.
