BACKGROUND AND PURPOSE Metastases engaging the acetabulum result in significant disability. We investigated the outcome after curettage and reconstruction of the defect with a protrusio cage, retrograde screws, and a cemented total hip arthroplasty. PATIENTS AND METHODS We retrospectively identified 70 consecutive patients who were surgically treated for metastatic disease of the acetabulum b...

Sacks [14] showed that every computably enumerable (c.e.) degree > 0 has a c.e. splitting. Hence, relativising, every c.e. degree has a Δ2 splitting above each proper predecessor (by ‘splitting’ we understand ‘nontrivial splitting’). Arslanov [1] showed that 0′ has a d.c.e. splitting above each c.e. a < 0′. On the other hand, Lachlan [9] proved the existence of a c.e. a > 0 which has no c.e. sp...

We describe a patient with severe scoliosis, which had been corrected partially with Harrington rods, who requested epidural analgesia for labour. With no palpable landmarks, the use of ultrasound enabled identification of the vertebral midline and allowed provision of regional anaesthesia.

IN 1951, Dr. David Harrington of the Division of Ophthalmology, University of California, San Francisco, sent me one of his erisophakes. Since then I have used the instrument sporadically, by which I mean that in an operating list oftwo, three, or four cataract extractions, an occasional one was done with the erisophake, the rest in the ordinary way. Fifty such extractions have now been perform...

The primary emphasis in this presentation is to take a top-down view of a decision support system (DSS) and to see how the mere existence of DSS causes improvement in management effectiveness. The areas covered include development of information needs, requirement of consistency in using information, discipline in decision making, and the integration of decisions toward goals. The improved effe...