Native hip geometry restoration in total hip arthroplasty: a retrospective analysis of eight different short stems.

Purpose: To compare different types of short stems (SS) in terms of native hip geometry reproducibility, analyzing centrum-collum-diaphyseal angle (CCD) and femoral offset (FO). These parameters allow the SS to be adapted to patient's anatomy in order to ensure better functional outcomes in total hip arthroplasty (THA).

Methods: A total of 387 cases of SS met the inclusion criteria.

A new classification for proximal femur bone defects in conservative hip arthroplasty revisions.

Introduction: In the last three decades, total hip replacement in young patient became a habitual procedure. Principles of bone preservation are pushing many surgeons to implant conservative femoral components in patient younger than 65 years. Despite an overall good survivorship and clinical outcomes of conservative implants, failed cases are reported and the need to revise a conservative femoral component became an occasional procedure (with high prevalence of failed resurfacing implants).

A new classification for proximal femur bone defects in conservative hip arthroplasty revisions.

Introduction: In last three decades, total hip replacement in young patients became an habitual procedure. Principles of bone preservation are pushing many surgeons to implant conservative femoral components in patient younger than 65 years. Despite an overall good survivorship and clinical outcomes of conservative implants, failed cases are reported and the need to revise a conservative femoral component became an occasional procedure (with high prevalence of failed resurfacing implants).

Total hip arthroplasty instability in Italy.

Hip dislocation is a major and common complication of total hip arthroplasty (THA), which appears with an incidence between 0.3% and 10% in primary total hip arthroplasties and up to 28% in revision THA. The hip dislocations can be classified into three groups: early, intermediate and late.

Minimally invasive plate osteosynthesis in proximal humeral fractures: one-year results of a prospective multicenter study.

Purpose: The aim of this multicentric study was to evaluate results of minimally invasive plate osteosynthesis (MIPO) for proximal humeral fractures in terms of postoperative shoulder function, radiological outcome and number of complications.

Methods: A consecutive series of 76 patients with proximal humeral fractures were treated with locking plate using a minimally invasive antero-lateral approach in two orthopaedic departments. Functional results with Constant score and radiographic evaluation were available for 74 patients at one-year follow up.

Bone loss management in total knee revision surgery.

Purpose: Bone stock reconstruction in TKR surgery is one of the biggest challenges for the surgeon. According to some, authors causes of bone stock loosening are multiple, including stress shielding, osteolysis from wear, septic or aseptic loosening, and bone loss caused by a poorly balanced implant. Moreover, bone loss may be iatrogenic at the time of implant removal, indicating that bone preservation during implant removal is critical.

Blood loss reduction in cementless total hip replacement with fibrin spray or bipolar sealer: a randomised controlled trial on ninety five patients.

Purpose: Several studies have investigated effectiveness of fibrin spray or bipolar sealer to control peri-operative bleeding and reduce the need for blood transfusion, but a direct comparison between the two methods has not been previously performed. We conducted a prospective randomised trial, with standard electrocautery as a control group.

Methods: In our investigation, 95 patients were randomised to one of three parallel groups receiving (1) 10 mL of topical fibrin spray before closure, (2) haemostasis with radiofrequency energy using a bipolar sealer, and (3) standard electrocautery.

Results of hip resurfacing.

Background: The renewed popularity of resurfacing hip arthroplasty in the last 10 years has generated a remarkable quantity of scientific contributions based on mid- and short-term follow-up. More than one paper has reported a consistent early revision rate as a consequence of biological or biomechanical failure. Two major complications are commonly described with resurfacing implants: avascular necrosis and femoral-neck fracture.

Patterns of cement distribution in total hip resurfacing arthroplasty.

In this in vitro study, 4 different resurfacing implants have been evaluated with a simulated femoral head: 2 types of cement have been used (low and high viscosity) and 2 different cementing techniques have been performed: direct (cement apposition directly on the femoral head) and indirect (cement poured into the femoral component). High-viscosity cement shows a homogeneous distribution all over the femoral head. Low-viscosity cement shows a massive polar concentration with insufficient if not absent distribution in the equatorial zone.