Rapid Magnetic Resonance Imaging Evaluation of Femoral Neck Stress Fractures in a U.S. Active Duty Military Population.

Objectives: Timely diagnosis of femoral neck stress fractures is important to prevent fracture completion and displacement. We hypothesize that an abbreviated magnetic resonance imaging (MRI) hip examination can diagnose femoral neck stress fractures and that femoral neck stress fractures are common in U.S.

Surgical management of retrorectal lesions: what the radiologist needs to know.

OBJECTIVE. The purpose of this article is to highlight the most salient imaging features of retrorectal masses with regard to surgical planning, preoperative biopsy, and identification of nonneoplastic mimickers of malignancy. CONCLUSION.

Suprascapular neuropathy after distal clavicle resection and coracoclavicular ligament reconstruction: a resident's case problem.

Study Design: Resident's case problem.

Background: Acromioclavicular joint pathology is reported to be present in up to 30% of all patients complaining of shoulder dysfunction. The operative approach to treating acromioclavicular joint disease often includes a distal clavicle excision and, in circumstances of acromioclavicular joint instability, reconstruction of the coracoclavicular and/or the acromioclavicular ligament.

Subtrochanteric femur fractures: review of the complete pathologic spectrum with emphasis on distinguishing imaging features.

Subtrochanteric femur fractures result from a variety of mechanisms of injury and underlying pathologies. Radiologists can play a pivotal role by differentiating the etiology of a subtrochanteric femur fracture, which assists the orthopedic surgeon in choosing the correct method of treatment. To provide this valuable service, one must be familiar with the characteristic radiologic features of the numerous causative etiologies, ranging from Paget disease to underlying bone lesions to iatrogenic fractures.

Sonography of musculoskeletal soft-tissue masses: techniques, pearls, and pitfalls.

Objective: The purpose of this article is to review the appropriate use of ultrasound in the workup of soft-tissue masses of the extremities. The normal sonographic appearance of superficial soft tissues, the importance of proper technique in image acquisition, and the characteristic sonographic appearance of certain masses and potential pitfalls are discussed.

Conclusion: Ultrasound is increasingly being used for the initial evaluation of soft-tissue masses of the extremities.

Greater trochanteric fracture with occult intertrochanteric extension.

Proximal femoral fractures are frequently encountered in the emergency department (ED). Prompt diagnosis is paramount as delay will exacerbate the already poor outcomes associated with these injuries. In cases where radiography is negative but clinical suspicion remains high, magnetic resonance imaging (MRI) is the study of choice as it has the capability to depict fractures which are occult on other imaging modalities.

Disruption of a patellar tendon repair.

The patient was a 38-year-old man evaluated by a physical therapist 14 weeks after repair of the left patellar tendon. The physical therapist requested radiographs, which revealed findings consistent with a patellar tendon retear. The radiologist recommended further evaluation with magnetic resonance imaging, which showed a left patellar tendon tear.

Imaging of hemorrhagic fever with renal syndrome: a potential bioterrorism agent of military significance.

Hemorrhagic fever with renal syndrome (HFRS) is a potentially fatal infectious disease with worldwide distribution. Its etiologic agents are viruses of the genus Hantavirus of the virus family Bunyaviridae. Hypothetical ease of production and distribution of these agents, with their propensity to incapacitate victims and overwhelm health care resources, lend themselves as significant potential biological agents of terrorism.

Extracranial epidural emphysema: pathway, aetiology, diagnosis and management.

Extracranial epidural emphysema is an uncommon phenomenon that refers to the presence of gas within the epidural space. As an isolated finding, it is typically benign, but it can be a secondary sign of more ominous disease processes, such as pneumothorax, pneumoperitoneum and epidural abscess. Although the phenomenon has been cited in case reports, a comprehensive review of this topic is lacking in the radiology literature.

Isolated bone infarct of the calcaneus after fracture.

The calcaneus has a rich vascular supply; therefore, avascular necrosis of the calcaneus is extremely rare. We report the first case of bone infarct of the calcaneus 9 months after a fracture. We also review the literature on osteonecrosis of the calcaneus to offer potential mechanisms for bone infarction in the calcaneus after a fracture.

Magnetic resonance diagnosis of tarsal tunnel syndrome due to flexor digitorum accessorius longus and peroneocalcaneus internus muscles.

Anomalous muscles of the ankle are common. Although they are often asymptomatic, they can sometimes cause tarsal tunnel syndrome. We report a case of tarsal tunnel syndrome due to flexor digitorum accessorius longus and peroneocalcaneus internus muscles diagnosed on magnetic resonance imaging.

Costovertebral fracture dislocations: important radiographically difficult diagnosis.

The authors' aim is to report the appearance of fracture dislocations of the costovertebral joint. We will review the pertinent anatomy of the costovertebral articulation, summarize the current literature, report our experience and the imaging appearance of costovertebral joint fracture dislocations, and discuss important concepts of the costovertebral joint, as it relates to thoracic spine fractures.

Magnetic resonance imaging of stress injury of the cuneiform bones in patients with plantar fasciitis.

Objective: The authors reported the magnetic resonance (MR) appearance of stress fractures of the cuneiform bones in patients with plantar fasciitis and performed a review of the literature on stress fractures associated with plantar fasciitis.

Materials And Methods: The authors performed a retrospective review of their experience with 5 cases of cuneiform stress fractures and associated plantar fasciitis. The medical records and MR examinations were reviewed.

Radiology pathology conference of Brooke Army Medical Center: trichoblastoma of breast.

The differential diagnosis of a superficial breast lesion detected on mammography typically includes seborrheic keratosis, dermal nevus, epidermal inclusion cyst, and basal cell carcinoma with subcutaneous invasion [Kopans DB. Breast Imaging. 3rd ed.

Comparison of planar scintigraphy alone and with SPECT for the initial evaluation of femoral neck stress fracture.

Objective: The objective of our study was to compare the accuracy of planar scintigraphy alone versus planar scintigraphy with SPECT for the initial evaluation of femoral neck stress fractures in a young military population.

Materials And Methods: We retrospectively identified 38 patients who had undergone planar scintigraphy and 33 patients who had undergone planar scintigraphy and SPECT before MRI of the hips over a 6-month period for evaluation of suspected femoral neck fracture. Data were analyzed regarding the sensitivity and specificity of bone scanning alone and with SPECT for detecting femoral neck stress fracture and grading fractures as low grade (grades I and II) or high grade (grades III and IV).

Magnetic resonance appearance of intra-articular synovial sarcoma: case reports and review of the literature.

Intra-articular synovial sarcoma is extremely rare. The authors report the magnetic resonance appearance of 2 cases of intra-articular synovial sarcoma and review the current medical literature on this subject. Intra-articular synovial sarcoma must be considered in the differential diagnosis of a heterogeneously enhancing multiloculated intra-articular mass, especially in the knee joint, that does not have the typical radiological features of either synovial osteochondromatosis, pigmented villonodular synovitis, or synovial hemangiomas.

MRI of quadratus femoris muscle tear: another cause of hip pain.

Objective: The objective of this study is to report the MR appearance of quadratus femoris muscle tear, another cause of hip pain. We will review the pertinent anatomy of the quadratus femoris muscle, summarize the current literature on quadratus femoris muscle tear, and report our experience in the diagnosis of quadratus femoris muscle tear on MRI.

Conclusion: MRI is an important tool in assisting clinicians to make a correct diagnosis for the patient who presents with hip pain.

Imaging popliteal artery disease in young adults with claudication: self-assessment module.

The educational objectives of this self-assessment module on imaging popliteal artery disease in young adults with intermittent claudication are for the participant to exercise, self-assess, and improve his or her knowledge of the imaging and clinical features of popliteal artery entrapment syndrome, cystic adventitial disease,and masses associated with popliteal artery obstruction.

Humeral avulsion of the glenohumeral ligaments: the HAGL lesion.

Background: Anterior instability of the shoulder is a frequently encountered clinical problem that is seen after avulsion of the capsulolabral complex from the glenoid rim (Bankart lesion). Recently, it has been determined that avulsion of the glenohumeral ligaments is an infrequent but important cause of recurrent instability after shoulder injury. Although the various forms of this injury have been described in the literature, no standardized nomenclature exists.