Residual Femoral Deformity and Femoroacetabular Impingement after Intertrochanteric Osteotomy for Slipped Capital Femoral Epiphysis

We retrospectively reviewed 29 hips in which intertrochanteric osteotomies were performed for severe slipped capital femoral epiphyses. Mean age at surgery: 12.6 years. Mean follow-up period: 6 years. At the final follow-up evaluation, one patient had coxalgia, and six hips showed a limited range of motion. A pistol-grip deformity was observed in 13 hips, osteoarthritis in two hips, and a bump existed in 19 hips on the latest radiographs. Gradual remodeling of the bumps was observed post-operatively in 22 hips. The mean α and β angles and offset α and β improved over time. The remodeling proceeded rapidly for 1 year post-surgery. We compared hips classified as β angles of ≥ 63° to < 63° at the final follow-up evaluation, the mean β angle 1 year post-surgery, and the mean ratio of improvement of the β angle per year from 1 year post-surgery to the final follow up, which differed significantly. Nearly all of the patients who underwent intertrochanteric osteotomies had residual morphologic abnormalities, but few had clinical symptoms. The β angle 1 year post-surgery and the ratio of remodeling of the bump from 1 year post-surgery to the final follow-up can be regarded as a potential predictor of morphologic results after intertrochanteric osteotomy

Effect of intermittent liver ischemia on outcome in patients with hepatocellular carcinoma on liver cirrhosis

The influence on postoperative liver function of intermittent normothermic hepatic ischemia in cirrhotic patients was studied retrospectively. The mean total ischemia time was 88 (range30 - 140) minutes in the hemi-hepatic occlusion group, and68 (range 10 - 187) minutes in the total occlusion group. There were no operative deaths due to hepatic failure. Postoperative liver function improved within 1 week of the opera-tion. There was no significant difference in the incidence of postoperative complications between the groups. Thus normothermic hepatic ischemia is tolerated for up to 180minutes in the cirrhotic liver when an intermittent technique (15 minutes clamped and5 minutes unclamped) is used

An Analysis of the Characteristics and Improved Use of Newly Developed CT-based Navigation System in Total Hip Arthroplasty

We developed a surface matching-type computed tomography (CT)-based navigation system for total hip arthroplasty (the N-navi; TEIJIN NAKASHIMA MEDICAL, Okayama, Japan). In the registration step, surface matching was performed with digitizing points on the pelvic bone surface after coarse paired matching. In the present study, we made model bones from the CT data of patients whose acetabular shapes had various deformities. We measured the distances and angles after surface matching from the fiducial points and evaluated the ability to correct surface-matching registration on each pelvic form, using several areas and numbers of points. When the surface-matching points were taken on the superior area of the acetabulum, the correction was easy for the external direction, but it was difficult to correct for the anterior and proximal directions. The correction was difficult for external and proximal directions on the posterior area. Each area of surface-matching points has particular directions that are easily corrected and other directions that are difficult to correct. The shape of the pelvis also affected the correction ability. Our present findings suggest that checking the position after coarse paired matching and choosing the surface-matching area and points that are optimal to correct will improve the accuracy of total hip arthroplasty and reduce surgical times

Synthesis, Structure, and Reactivity of Group VI Metal Complexes Bearing Group IV Metallocenyldiphosphine Moieties and a Pentamethylcyclopentadienyl Ligand

A series of group VI metal complexes bearing a group IV metallocenyldiphosphine moiety and a pentamethylcyclopentadienyl ligand have been prepared and structurally characterized. Reactions of trinuclear complexes with KC₈ give the corresponding neutral chloride-bridged complexes. Further reaction of the resulting chloride-bridged complex with NaBAr^F₄ gives the corresponding monocationic chloride-bridged complex. On the other hand, reactions of the neutral chloride-bridged complexes with <i>n</i>-BuLi give the corresponding chloride-bridged alkyl complexes, where the group IV metallocene­(III) moiety and the coordinatively unsaturated group VI metal­(II) center are in close proximity. Spectroscopic and crystallographic studies of the reaction of a chloride-bridged alkyl complex with CO or a protic acid indicate that further disproportionation takes place at the alkyl zirconocene­(III) moiety

Synthesis, Structure, and Reactivity of Group VI Metal Complexes Bearing Group IV Metallocenyldiphosphine Moieties and a Pentamethylcyclopentadienyl Ligand

A series of group VI metal complexes bearing a group IV metallocenyldiphosphine moiety and a pentamethylcyclopentadienyl ligand have been prepared and structurally characterized. Reactions of trinuclear complexes with KC₈ give the corresponding neutral chloride-bridged complexes. Further reaction of the resulting chloride-bridged complex with NaBAr^F₄ gives the corresponding monocationic chloride-bridged complex. On the other hand, reactions of the neutral chloride-bridged complexes with <i>n</i>-BuLi give the corresponding chloride-bridged alkyl complexes, where the group IV metallocene­(III) moiety and the coordinatively unsaturated group VI metal­(II) center are in close proximity. Spectroscopic and crystallographic studies of the reaction of a chloride-bridged alkyl complex with CO or a protic acid indicate that further disproportionation takes place at the alkyl zirconocene­(III) moiety