Quadrilateral plate fractures.

During the last two decades, extended scientific interest focused on quadrilateral plate (QLP) fractures as part of common acetabular fractures. The QLP corresponds to the medial wall of the acetabulum, and different fracture pattern of Letournel´s fracture types are associated with concomitant QLP fractures. Except anterior and posterior wall fractures, all other fracture types may be associated with QLP fractures.

Articular impactions in acetabular fractures.

Impactions of the articular surface are relevant prognostic parameters in the treatment of acetabular fractures. Posterior marginal impactions and acetabular dome impactions may occur depending on the direction of the force vectors during trauma. Posterior marginal impactions are mainly observed in posterior fracture dislocations, while acetabular dome impactions are frequently seen in the elderly with the hip joint in extension during trauma.

Left-right difference in acetabular articular cartilage surface area and the quantification of acetabular fractures.

X-ray computer tomography scans were carried out on 11 female and 9 male dry bony pelvises. A 512 x 512 image matrix was used with a slice thickness and separation of 2 mm. Images were transferred onto a computer and the articular cartilage marked on each relevant image.

Are all cases of floating hip the same? Further understanding of floating hip.

Purpose: Floating hip is a severe high-energy injury. Femoral fracture is an essential component of floating hip. However, few studies have addressed the relationship between the femoral fracture pattern and floating hip injury.

Outcomes of Surgical Treatment of Acetabular Fractures with a Minimum of 1-Year Follow-up.

Backgroud: Acetabular fractures are rare and challenging to treat, and the surgeon's learning curve for managing these fractures is steep. The incidence of acetabular fractures is low, making it difficult to conduct single-surgeon, single-center studies. Therefore, multi-surgeon and multi-center studies may produce inconsistent outcomes compared to those of single-surgeon, single-center studies.

Radiographic and clinical evaluation of external pedicle screw fixation as a definitive solution for selective acetabular fractures: a retrospective analysis.

Background: Acetabular fractures typically require open surgery to restore hip joint function. Openness may lead to serious tissue damage, increased bleeding, and the risk of nerve and vascular damage. Minimally invasive closed reduction or percutaneous fixation aims to minimize additional harm to patients and provide reliable fixation to promote fracture recovery and functional rehabilitation.

[Minimally invasive stabilization of acetabular fractures with virtual navigation combined with robot-assisted 3D imaging].

Objective: Minimally invasive stabilization of non- and minimally displaced acetabular fractures using intraoperative, robot-assisted three-dimensional (3D) imaging and a navigation system.

Indications: Nondisplaced or only minimally displaced fractures of the acetabulum.

Contraindications: Comminuted and highly displaced fractures of the acetabulum, protrusion of the femoral head into the pelvis with the need for open reduction, lack of possibility of intraoperative navigation.

The Long-Term Clinical and Radiographic Outcomes of Cerclage Cable Fixation for Displaced Acetabular Fractures Using a Posterior Approach: A Retrospective Cohort Study.

: Cerclage cable fixation with 2 mm multiple-braided cables for displaced acetabular fractures has shown good midterm functional and radiographic outcomes. We retrospectively evaluated the clinical and radiographic outcomes of cerclage cable fixations over ten years. : We extracted data for patients who underwent cerclage cable fixation for acetabular fractures at a single institution from 2007 to 2012.

Algorithms in acetabular fracture classifications.

Acetabular fractures are still challenging fractures. Fracture classification is the basis for understanding these injuries and to gain treatment and to choose a fracture type-based treatment concept. Using a systematic step-wise concept of fracture analysis, based on specific radiographic lines on standard X-rays allow even less experienced surgeons to get a correct classification of the elementary and associated fracture types of Letournel's classification.

Minimally Invasive Pelvic and Acetabular Surgery: Case Report of a Robot-Assisted Osteosynthesis of an Open-Book Injury of the Pelvic Ring.

Background: In recent years, endoscopic treatment of pelvic ring injuries has emerged. In addition to the complex 3D anatomy of the bony pelvis, a particular challenge is its embedding in the surrounding soft tissue structures. It is known from other surgical specialties that the preparation can be facilitated by using surgical robot systems.

Accuracy of robotic arm-assisted versus computed tomography-based navigation in total hip arthroplasty using the direct anterior approach: a retrospective study.

Background: A robotic arm-assisted and a computed tomography (CT)- based navigation system have been reported to improve the accuracy of component positioning in total hip arthroplasty (THA). However, no study has compared robotic arm-assisted THA (rTHA) to CT-based navigated THA (nTHA) concerning accuracy of cup placement and acetabular fractures using the direct anterior approach (DAA). This study aimed to compare the accuracy of cup placement and the presence of intraoperative acetabular fractures between rTHA and nTHA using DAA in the supine position.

Assessment of radiological and functional outcomes of complex acetabulum fracture managed with combined anterior and posterior approach in a single anaesthetic setting: a retrospective study.

Background: Appropriate selection of surgical approach for associated fractures of the acetabulum that involves both columns is still elusive. Therefore, present study aimed to assess the quality of life of complex acetabulum fracture managed with combined anterior and posterior approach (dual approach) as well as the association of postoperative reduction and patient reported outcomes.

Material And Methods: This retrospective study was performed on 42 associated acetabular fracture patients with involvement of both columns, who were treated with a dual approach including combined anterior modified ilio-inguinal approach in combination with posterior Kocher-Langenbeck (K-L) approach in a single anaesthetic session having minimum two years follow-up.

[Long-term computed tomographic osteolytic analysis of highly cross-linked polyethylene prosthesis after total hip arthroplasty].

Objective: To analyze the occurrence of osteolysis in total hip arthroplasty (THA) with highly cross-linked polyethylene prosthesis during a follow-up of more than 15 years.

Methods: The clinical data of 84 patients (105 hips) treated with THA in the Affiliated Hospital of Kanazawa Medical University in Japan between June 2000 and April 2004 and met the selection criteria was retrospectively analyzed. There were 7 males and 77 females, aged from 41 to 75 years, with an average of 56.

[Experiences with the infra-acetabular screw placement technique in acetabular fracture surgery].

Objective: To investigate the application experiences and effectiveness of the infra-acetabular screw (IAS) placement technique in acetabular fracture surgery.

Methods: A clinical data of 34 patients with complex acetabular fractures with anterior and posterior columns separation, who were admitted between January 2019 and October 2023 and treated with IAS fixation, was retrospectively analyzed. There were 23 males and 11 females with an average age of 55.

Acetabular morphology variations in a Hispanic population.

Background: Rotational abnormalities of the hip have been implicated in the etiology of diseases, such as hip dysplasia, osteoarthritis, and femoroacetabular impingement. Despite the extensive literature on hip morphology, there is a gap in knowledge regarding variations in the Hispanic population.

Purpose: To describe the bony anatomy variations of the acetabulum in a Hispanic population.

The infraacetabular screw - anatomy, radiology, biomechanics and clinics.

Acetabular fracture surgery follows the primary aim of anatomic reduction and rigid stable fixation of the fracture. Infraacetabular screws (IAS) allow for an increased stability of the acetabular fixation by closing the periacetabular fixation frame without requiring an additional posterior approach. The osseous screw corridor for infraacetabular screws use the transition zone between the acetabular ring and the obturator ring.

Three-dimensional assessment of subchondral arc and hip joint coverage angles in the asymptomatic young adult hip.

The primary objective of this study was to develop a custom algorithm to assess three-dimensional (3D) acetabular coverage of the femoral head based on surface models generated from computed tomography (CT) imaging. The secondary objective was to apply this algorithm to asymptomatic young adult hip joints to assess the regional 3D acetabular coverage variability and understand how these novel 3D metrics relate to traditional two-dimensional (2D) radiographic measurements of coverage. The algorithm developed automatically identifies the lateral- and medial-most edges of the acetabular lunate at one-degree intervals around the acetabular rim based on local radius of curvature.

Semi-automated finite element analyses of surgically treated acetabular fractures to investigate the biomechanical behaviour of patient-specific compared to conventional implants.

Background: In acetabular fracture surgery, understanding the biomechanical behaviour of fractures and implants is beneficial for clinical decision-making about implant selection and postoperative (early) weightbearing protocols. This study outlines a novel approach for creating finite element models (FEA) from actual clinical cases. Our objectives were to (1) create a detailed semi-automatic three-dimensional FEA of a patient with a transverse posterior wall acetabular fracture and (2) biomechanically compare patient-specific implants with manually bent off-the-shelf implants.