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BACKGROUND Ischiofemoral impingement is caused by compression of the quadratus femoris muscle between the ischial tuberosity and lesser trochanter. The evaluation of ischiofemoral impingement includes radiologic studies to evaluate the ischiofemoral space dimensions. No prior study has evaluated the effect of femoral position on ischiofemoral space(More)
Epithelioid malignant peripheral nerve sheath tumors arising in preexisting schwannomas are extremely rare. We report an unusual example occurring in a patient with multiple schwannomas (schwannomatosis), all but 1 of which showed "neuroblastoma-like" histology. By immunohistochemistry, both the epithelioid malignant peripheral nerve sheath tumor and the(More)
PURPOSE The posterolateral corner (PLC) of the knee is anatomically complex with similarly complex MR imaging findings in acutely injured knees. The purpose of this study was to define the MRI pattern of injury in cases of PLC disruption requiring surgery because of clinical instability. METHODS The knee MRIs of 22 patients who underwent surgical repair(More)
OBJECTIVE The objective of our study was to better define the T1-weighted MRI characteristics of surgically proven pedal osteomyelitis. CONCLUSION Decreased T1 marrow signal in a geographic medullary distribution with a confluent pattern and concordance with fat-suppressed T2- and T1-weighted postcontrast signal abnormality was present in 100% of the(More)
To highlight the significance and imaging characteristics of Morel-Lavallée (ML) lesions, which have been well characterized on MRI, but are potentially under-recognized on CT. Twenty-eight Morel-Lavallée lesions were identified in 18 patients and were all clinically or surgically confirmed. Lesions were grouped into acute (<3 days), subacute (3–30 days),(More)
BACKGROUND The lateral tibial posterior slope (LTPS) has been reported in multiple studies to correlate with an increased risk for native anterior cruciate ligament (ACL) tearing. To date, no study has examined the effect of an increased LTPS as measured on magnetic resonance imaging (MRI) on the likelihood of ACL graft failure. HYPOTHESIS An increased(More)
OBJECTIVE The purpose of this study was to review the use of epinephrine in the management of contrast reactions and to evaluate the appropriateness of the clinical indication, side effects and complications, and outcome. CONCLUSION Severe contrast reactions necessitating treatment with epinephrine are rare. The most common clinical indication is(More)
BACKGROUND Tibial tubercle-trochlear groove distance (TT-TG) is a commonly used measurement for surgical decision making in patients with patellofemoral malalignment and instability. This measurement has historically been performed utilizing axial computed tomography (CT). More recently, magnetic resonance imaging (MRI) has been proposed as an equivalent(More)
OBJECTIVE The purpose of this study was primarily to assess the diagnostic performance of magnetic resonance imaging (MRI) in detecting articular cartilage injuries in patients with glenohumeral instability. A secondary purpose was to assess the diagnostic performance of MRI for detection of Hill-Sachs and Bankart lesions. MATERIALS AND METHODS A cohort(More)
OBJECTIVE The sensitivity of MRI for the detection of tears of the posterior horn of the lateral meniscus (PHLM) is lowest compared with that for tears at other meniscal locations, and the presence of simultaneous acute anterior cruciate ligament (ACL) injury decreases overall MRI sensitivity for meniscal tears. We rereviewed surgically proven cases of(More)