Skeletal radiology
-
To study the relationship of upper thoracic spine degenerative disc contour changes on MR imaging in patients with neck pain. The relation between upper thoracic and cervical spine degenerative disc disease is not well established. ⋯ A statistically significant relation was found within the upper thoracic discs, reflecting common pathoanatomical changes. The absence of relation to cervical segments is probably due to differences in their pathomechanisms.
-
The "arcuate sign" is considered a pathognomonic sign for injuries of the posterolateral (PL) corner of the knee. The purpose of our study was to identify different patterns of injury to the fibular head that may associate with injuries to specific ligaments and tendons of the PL corner of the knee. The anatomic relations between the insertions of fibular collateral ligament (FCL), biceps femoris tendon (BFT), popliteofibular ligament (PFL), and arcuate ligament in normal cadaveric knees were also investigated. ⋯ The PFL and arcuate ligament were seen to attach directly to the posterior and medial aspect of the styloid process of the fibular head. The FCL and BFT attached as a conjoined structure on the lateral aspect of the fibular head lateral, anterior and inferior to the attachment site of the PFL and arcuate ligament. Injury to the arcuate ligament or PFL was diagnosed in 8 patients who presented with a small avulsion fracture of the styloid process of the fibula (n=2), bone marrow edema in the medial aspect of the fibular head (n=3), or both (n=3). In 4 patients with injury to the conjoined tendon or FCL, a larger avulsion fragment and more diffuse proximal fibular edema were seen. Radiographic and MR imaging findings in injuries of the posterolateral corner of the knee may suggest injury to specific structures inserting in the fibular head.
-
Comparative Study
Postgraduate musculoskeletal fellowship training in the United States: current trends and future direction.
To document current postgraduate musculoskeletal training program (accredited and unaccredited) curricula and approaches to education. ⋯ The majority of musculoskeletal training programs prepared trainees for private or academic practice. There are inconsistencies that could be improved to better prepare trainees for careers in musculoskeletal imaging.
-
Ultrasound is an established modality for the evaluation of neuromas, particularly Morton's neuromas. It has also had success in the assessment of amputation stump neuromas. While ultrasound localization for steroid injection has proven useful in the conservative treatment of Morton's neuromas, it has not yet been established as a localization technique for steroid injection to successfully treat amputation stump neuromas.
-
We present a case of a hibernoma arising from the left axilla in a 24-year-old woman. The imaging characteristics on both contrast-enhanced CT (attenuation similar to surrounding skeletal muscle) and T1-weighted MR imaging (signal intensity intermediate between those of skeletal muscle and subcutaneous fat) were inconsistent with a fatty mass. ⋯ Although hibernomas classically contain brown fat, imaging characteristics on T1-weighted images typically demonstrate a mass that is hypointense to adjacent subcutaneous fat. Knowledge of its MR imaging characteristics may help to suggest hibernoma in the preoperative diagnosis, although other tumors should still be considered in the differential diagnosis