Notes

The interaction involving acidophiles generating community useful replies to the re-inoculated chalcopyrite bioleaching procedure.
The concordance of the CT-ARA among Group 1 and Group 2 resulted significantly different.

the CT-ARA may be a useful tool for the preoperative decision-making process and showed more correlation with performed surgery compared to the Paprosky's algorithm.
the CT-ARA may be a useful tool for the preoperative decision-making process and showed more correlation with performed surgery compared to the Paprosky's algorithm.
Adverse reaction to metal debris is the major cause of the high revision rates of metal on metal hip implants with femoral head size ≥ 36mm. Health authorities recommend regular surveillance even for asymptomatic individuals. The main investigations used are Co+ and Cr+ serum levels, x-rays and, eventually, ultrasound and MARS-MRI. Clinic is also assessed. The aim of this study is to identify if there is a relation between ion levels and the clinical scores in order to evaluate the outcome and plan the correct management after this type of implant.

383 subjects were included and divided in 3 groups (serum ion levels >, < and >60 µg/L). Co+, Cr+, HHS and OHS results of 1 2017 were analysed in order to show a correlation between ion levels and clinical scores .

Clinical scores were similar in group 1 and 2. Differences were observed comparing the group 1 and 2 with group 3 for both variables.

Surveillance algorithms have been introduced by health authorities. Nevertheless, the indication to revision surgery is not simple especially in those cases in which a discrepancy between clinic and investigations is present. In this study clinical scores seem to be less important than ion levels in the evaluation of outcomes and in order to plan the correct management in the majority of cases. Larger studies are needed to highlight the real importance of clinical scores in the decision making after these type of implants.
Surveillance algorithms have been introduced by health authorities. Nevertheless, the indication to revision surgery is not simple especially in those cases in which a discrepancy between clinic and investigations is present. In this study clinical scores seem to be less important than ion levels in the evaluation of outcomes and in order to plan the correct management in the majority of cases. Larger studies are needed to highlight the real importance of clinical scores in the decision making after these type of implants.Background and aim of the work In the last decade arthroscopic treatment of hip diseases has significantly spread and evolved and currently it represents the gold standard for the treatment of femoral-acetabular impingement in athletes. The function of the joint capsule has been better understood, opening a heated debate. The aim of the present retrospective study is to assess the influence of different capsulotomy techniques and a possible capsular suture role on the patient's functional outcome in a cohort of patients with femoral-acetabular impingement arthroscopically treated. Methods 36 patients (competitive athletes) treated with hip arthroscopy for femoral-acetabular impingement have been retrospectively enrolled during a period of two years (2016-2018). Patients have been divided into three equivalent groups, 12 without a suitable capsular management (T-Capsulotomy technique), 12 performing a Longitudinal Capsulotomy but without a final suture and 12 treated with a conservative Longitudinal Capsulotomy and a capsular suture. Patient's post-operative functional outcome has been analysed using the modified Harris Hip Score (mHHS), the Hip Outcome Score-Activity of Daily Living (HOS-ADL) and the Hip Outcome Score-Sport Scale (HOS-SS). Crenolanib Return to sport. Results In our series there was no statistically significant difference in functional scores, however longitudinal capsulotomy seems to be associated with a higher percentage of return to sports activity (91,6% vs 75%). Conclusions The new longitudinal shape capsulotomy technique and a capsular suture with a single side-to-side stitch at the end of the procedure in athletes can positively influence the patient's functional outcome.
Osteoarthritis is the most common cause of disability in elderly. Hip osteoarthritis is the second most frequent form affecting a large joint and the social and economic impact on society of its related disability is expected to increase. The purpose of this study was to verify the efficacy and safety of ultrasound-guided viscosupplementation with high weight hyaluronic acid in hip osteoarthritis.

183 patients with painful hip OA (Kellgren-Lawrence 1-2-3) were treated from January 2014 to December 2016 with viscosupplementation. Patients were evaluated before injection (T0) and after 1,2,3,4 years through the VAS scale and Harris Hip Score (HHS). Patients who underwent to subsequent injections were followed and assessed. Subjects who underwent prosthesis were analyzed for a minimum of 6 months in order to detect any early postoperative complication.

The mean improvement of HHS and VAS between T0 and T1 was statistically significant. Patients who underwent subsequent injections showed a higher improvement even if statistical significance was not observed. Results showed that patients with grade 2 of osteoarthritis had the higher change in the scores. No adverse effects were registered. No early complications were reported in those patients who needed prosthesis.

Results observed confirm that ultrasound-guided viscosupplementation with high weight hyaluronic acid could be a possibility in the treatment of hip osteoarthritis, especially in patients with Kellgren-Lawrence grade 2 of disease. Subsequent injections are not characterized by similar positive effects. Outcomes of prosthetic surgery are not influenced by viscosupplementation.
Results observed confirm that ultrasound-guided viscosupplementation with high weight hyaluronic acid could be a possibility in the treatment of hip osteoarthritis, especially in patients with Kellgren-Lawrence grade 2 of disease. Subsequent injections are not characterized by similar positive effects. Outcomes of prosthetic surgery are not influenced by viscosupplementation.
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