Day of Surgery Admission in Total Joint Arthroplasty: Why Are Surgeries Cancelled? An Analysis of 3195 Planned Procedures and 114 Cancellations.

. Day of surgery admission (DOSA) is becoming standard practice as a means of reducing cost in total joint arthroplasty. .

MRI findings following metal on metal hip arthroplasty and their relationship with metal ion levels and acetabular inclination angles.

Following the global recall of all ASR metal on metal hip products, our aim was to correlate MRI findings with acetabular inclination angles and metal ion levels in patients with these implants. Both cobalt and chromium levels were significantly higher in the presence of a periprosthetic fluid collection. There was no association between the presence of a periprosthetic mass, bone marrow oedema, trochanteric bursitis or greater levels of abductor muscle destruction for cobalt or chromium.

The 30 ml cement test.

We describe a simple and reliable test which can be used while performing hip arthroplasty as an indicator of the size and volume of the femoral canal to roughly estimate the volume of cement required to fill the femoral canal for cementing the femoral prosthesis.