The use of intra-operative fluoroscopy for tibial tunnel placement in anterior cruciate ligament reconstruction.

Objectives: Our aim was to assess the use of intra-operative fluoroscopy in the assessment of the position of the tibial tunnel during reconstruction of the anterior cruciate ligament (ACL).

Methods: Between January and June 2009 a total of 31 arthroscopic hamstring ACL reconstructions were performed. Intra-operative fluoroscopy was introduced (when available) to verify the position of the guidewire before tunnel reaming.

Management of blood loss in periacetabular osteotomy.

The aim of this study was to determine the efficacy and cost-effectiveness of the use of predonation of autologous blood for the periacetabular osteotomy. We carried out a retrospective single surgeon series study looking at patient demographics, intraoperative blood loss, volume of red cells returned (by cell salvage and allogenic/autologous transfusion), and comparing pre- and postoperative haemoglobin levels in those that predonated and those that did not. One hundred and twenty-two procedures were performed on 107 patients between 1996 and 2005.

Variation in the anatomy of the tibial plateau: a possible factor in the development of anteromedial osteoarthritis of the knee.

From a search of MRI reports on knees, 20 patients were identified with evidence of early anteromedial osteoarthritis without any erosion of bone and a control group of patients had an acute rupture of the anterior cruciate ligament. The angle formed between the extension and flexion facets of the tibia, which is known as the extension facet angle, was measured on a sagittal image at the middle of the medial femoral condyle. The mean extension facet angle in the control group was 14 degrees (3 degrees to 25 degrees ) and was unrelated to age (Spearman's rank coefficient, p = 0.

In vitro pressurization of the acetabular cement mantle: the effect of a flange.

A model was developed to assess the effect of an acetabular flange on pressure within different zones of the cement mantle during insertion. Two prosthetic designs were assessed in 3 different sizes. Flanged components produced significantly higher mean pressures than unflanged ones (P < .

Magnetic resonance imaging of the patella: a comparison of the morphology of the patella in normal and dysplastic knees.

We retrospectively analysed the MR scans of 25 patients with patellofemoral dysplasia and ten control subjects, to assess whether there was any change in the morphology of the patella along its vertical length. Ratios were calculated comparing the size of the cartilaginous and subchondral osseous surfaces of the lateral and medial facets. We also classified the morphology using the scoring systems of Baumgartl and Wiberg.