Skeletal radiology
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Comparative Study
Pelvic stress injuries: the relationship between osteitis pubis (symphysis pubis stress injury) and sacroiliac abnormalities in athletes.
To demonstrate with radiographic imaging the association between pubic stress injury and sacroiliac abnormalities in athletes. ⋯ We have found a group of athletes in whom stress injuries to the pubic symphysis are associated with changes in the sacroiliac joint as demonstrated by degenerative changes or in the sacrum as manifested as a sacral stress fracture. These findings are probably due to abnormal stresses across the pelvic ring structure that lead to a second abnormality in the pelvic ring. The abnormality in the sacrum is not always well seen with conventional imaging. Recognition of the association of stress injury of the symphysis with back pain is important in that it can help avoid inappropriate studies and diagnostic confusion.
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Review Case Reports
Luxatio erecta of the hip: a critical retrospective.
The term "luxatio erecta" has been borrowed from the shoulder to identify rare traumatic hip dislocations in which there is inferior dislocation of the femoral head and inversion of the femoral shaft. A review of the literature is presented along with an additional illustrative case. The mechanism of injury, and the radiological and physical appearance of the patient, indicate that there are two subtypes of dislocation hitherto lumped together under the single term.
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We describe an unusual cortical avulsion fracture off the medial tibial plateau of the knee associated with tears of the posterior cruciate ligament and the medical meniscus. This constellation of findings is the reverse of that seen with the Segond injury complex. We postulate that the plain film diagnosis of this fracture, like the Segond fracture, is a clue to the likely presence of associated ligamental and meniscal tears, and to the mechanism of injury.
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Comparative Study
The scapholunate interosseous ligament in MR arthrography of the wrist: correlation with non-enhanced MRI and wrist arthroscopy.
To compare three-compartment MR wrist arthrography with non-enhanced MRI in correlation with wrist arthroscopy, and to evaluate the potential of MR arthrography for consistently visualizing all parts of the scapholunate interosseous ligament of the wrist (SLIL) and exactly diagnosing the site and extent of SLIL defects. ⋯ MR arthrography, using three-dimensional volume acquisition with thin slices (0.6-1.0 mm), combines the advantages of three-compartment arthrography and non-enhanced MRI. It shows the precise location and magnitude of ligamentous defects of all parts of the SLIL, correlates well with wrist arthroscopy and has potential implications for diagnosis and treatment planning.
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To demonstrate the MRI findings of an anterior shoulder capsular avulsion from the humerus, with or without subscapularis rupture, after anterior dislocation or severe abduction external rotation injury. ⋯ Our findings suggest that MRI is helpful for diagnosing humeral avulsion of the anterior glenohumeral capsule, especially when a tear of the subscapularis tendon insertion is present. MR arthrography may be of benefit for diagnosing capsular avulsion without associated subscapularis tendon abnormality.