No abstract

Pelvic osteotomies for acetabular dysplasia include an osteotomy of the ischium. The potential anatomical hazards of three different osteotomies of the ischium were assessed by performing a triple osteotomy in a series of 8 fresh cadaver pelvises. An oblique osteotomy above the sacrospinous ligament using a posterior approach requires that the inferior gluteal and pudendal neurovascular bundles be mobilised and retracted. A transverse osteotomy below the sacrospinous ligament using a posterior approach can be performed in a relatively safe area between the pudendal and sciatic nerves. A transverse osteotomy from anterior can be performed through a modified Smith Peterson approach. The pudendal nerve medially, the sciatic nerve laterally and the medial circumflex artery distally are not visualised and are prone to damage.

Cine-MRT was performed in 8 healthy subjects and in 16 patients with myocardial infarction, in whom regional wall motion abnormalities had been demonstrated by left ventricular angiography. Short axis and long axis slices were obtained by angulation of the imaging planes according to the orientation of the cardiac axes. From the end-diastolic and end-systolic images, systolic wall thickening and radial wall motion were determined. In healthy subjects, regional variation in wall thickening was not significant. Patients with myocardial infarction demonstrated abnormal wall motion within the infarct region. Discrepancies between wall thickening and wall motion were observed in 8 patients.