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July 24, 2006
Comparison of Radiologic Signs and Clinical Symptoms of Spinal Stenosis
Spine
Clinical findings of spinal stenosis were compared to graded radiologic
findings of dural sac narrowing...Conclusion: Although an external
compression simulates the dynamic condition in the back during standing
position, it does not eliminate the need to compare the radiologic
findings with the clinical symptoms of patients examined because of a
suspected narrowing of the spinal canal...
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A Case of Hamate Fracture with Dislocation of the Ring and Little Finger
Metacarpals - Imaged with Three-dimensional Computed Tomography
European Journal of Trauma
A case of fracture of the hamate combined with dislocation of the fourth and
fifth metacarpals is presented. This is a rare injury. Diagnosis and
treatment were delayed because the fracture dislocation was initially missed
due to lack of familiarity with the injury and inadequate conventional
radiographs. Three-dimensional computed tomography scanning (3D-CT) provided
definite diagnosis and adequate insight in the relation of fracture parts.
Open reduction and fixation with k-wires gave good outcome...
July 20, 2006
Multifocal Melorheostosis
Clinical Nuclear Medicine
Sclerosing lesions of bone such as melorheostosis, osteopathia striata, and
osteopoikilosis have rather characteristic but overlapping radiographic
features with differential bone scan findings. These lesions usually involve
a single bone. We present a patient who had radiographic evidence of
involvement in at least 2 sites who was shown by bone scintigraphy to have
diffuse symmetric involvement of the appendicular skeleton
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July 19, 2006
Articular cartilage MR imaging and thickness mapping of a loaded knee
joint before and after meniscectomy
Osteoarthritis and Cartilage
Conclusions: Medial meniscectomy resulted in increased medial tibial
cartilage nominal strains centrally and decreased strains peripherally.
Areas of abnormally high nominal strain following meniscectomy
correlated with areas that are known to develop fibrillation and
softening 16 weeks after medial meniscectomy. Areas of abnormally low
nominal strain correlated with areas of osteophyte formation. Studies of
articular cartilage deformation may prove useful in elucidating the
mechanical etiology of osteoarthritis...
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Coexistence of intravertebral vacuum and intradiscal vacuum
Joint, Bone, Spine
Conclusion: Our findings support migration of gas from the disk to a
fracture in the adjacent vertebral body. The term "vertebral osteonecrosis"
used to designate IVV may be inappropriate. IVV is rarely shown by plain
radiographs, indicating a need for other morphological criteria...
Free Full Text
Are bone erosions detected by magnetic resonance imaging and ultrasonography
true erosions? A comparison with computed tomography in rheumatoid arthritis
metacarpophalangeal joints
Arthritis Research & Therapy
The objective of the study was, with multidetector computed tomography (CT)
as the reference method, to determine whether bone erosions in rheumatoid
arthritis (RA) metacarpophalangeal (MCP) joints detected with magnetic
resonance imaging (MRI) and ultrasonography (US), but not with radiography,
represent true erosive changes...The present study strongly indicates that
bone erosions, detected with MRI and US in RA patients, represent a loss of
calcified tissue with cortical destruction, and therefore can be considered
true bone erosions...
July 18, 2006
Magnetic Resonance Imaging of the Elbow: Update on Current Techniques and
Indications
Journal of Hand Surgery
The utility of magnetic resonance imaging of the elbow has noticeably
improved over the past decade...This article serves as an educational update
for hand surgeons and illustrates the features of normal anatomy and
specific disorders of the elbow...
Osteosarcoma: Preliminary Results of In Vivo Assessment of Tumor Necrosis
After Chemotherapy With Diffusion- and Perfusion-Weighted Magnetic Resonance
Imaging
Investigative Radiology
Conclusion: Both dynamic contrast-enhanced MRI and diffusion-weighted MRI
permit recognition of tumor necrosis induced by chemotherapy in
osteosarcomas. We hypothesized that diffusion-weighted imaging is correlated
directly with tumor necrosis. Perfusion-weighted imaging is correlated with
microvessel density, vascular permeability, local blood volume, and flow.
Therefore, perfusion weighed MRI depicts areas of tumor cell necrosis
indirectly...
Osteosclerotic Myeloma With Spinal Leptomeningitis and Severe Polyneuropathy:
A Case Report
Journal of Computer Assisted Tomography
The diagnosis of osteosclerotic myeloma was confirmed by bone marrow biopsy
findings including the chromosome 13q14 deletion in 37% of the cells.
Leptomeningeal involvement was demonstrated by spine magnetic resonance
imaging with gadolinium administration and fat-suppression technique...
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MR Imaging of Rotator Cuff Injury: What the Clinician Needs to Know
Radiographics
The rotator cuff muscles generate torque forces to move the humerus while
acting in concord to produce balanced compressive forces to stabilize the
glenohumeral joint. Thus, rotator cuff tears are often associated with loss
of shoulder strength and stability, which are crucial for optimal shoulder
function...
CME
July 14, 2006
External anal sphincter volume measurements using 3-dimensional endoanal
ultrasound
American Journal of Obstetrics and Gynecology
Significant nerve injury to a muscle can be associated with muscle atrophy
and volume loss...Conclusion: Quantitative 3D ultrasound of the anal
sphincter is moderately reproducible...
Prediction of TMJ Arthralgia According to Clinical Diagnosis and MRI
Findings
The International Journal of Prosthodontics
Conclusions: Pain in the TMJ caused by the anatomic proximity of the muscle
masseter origin and the lateral TMJ pole and the possible existence of
trigger points in the musculature may lead to a false-positive or a
false-negative diagnosis of arthralgia. Additionally, clinicians must
consider the psychosocial aspects of pain in ideal treatment planning...
Monitoring Buried Free Flaps: Limitations of the Implantable Doppler and Use
of Color Duplex Sonography as a Confirmatory Test
Plastic and Reconstructive Surgery
Conclusions: The implantable Doppler probe is a sensitive method for
postoperative monitoring of free flaps but is prone to false-positive
signals.The use of color duplex sonography to confirm implantable Doppler
probe findings may avert unnecessary surgical exploration, thereby improving
postoperative monitoring of free flaps...
July 12, 2006
Chronic disease and independence in old age: A case study
Radiography
This report uses case study methodology to examine the issue of long-term
care of the elderly in the United Kingdom, including where that care should
take place. The report will examine the difficulties inherent in maintaining
independent living for the elderly (in particular the danger and cost of
falls) ...
July 11, 2006
Nail and Distal Interphalangeal Joint in Psoriatic Arthritis
Journal of Rheumatology
Conclusion: MRI nail involvement was present in almost all patients with PsA
studied, even in those without clinically evident onychopathy. MRI
involvement of DP always overlapped with nail involvement, since it was
present in all psoriatic cases showing MRI nail involvement. In contrast,
MRI DIP joint involvement was almost exclusively in a lower percentage of
the patients with clinical nail involvement and was always associated with
MRI DP changes. Our results suggest that DIP joint involvement is always
secondary to nail and DP involvement...
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